So You Call Yourself A ME part 2
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Radman said:
178) incorrect
222) Wire fill and conductors in a cable for determining amperage rating of the multi-cable.
226) When a Edison say duplex receptacle is mounted so the parallel blades are horizontal, which pin should be up?
280) If not intended.
Radman
Well-Known Member
133) More specifically the insulation on SJOW is thermoset, while on SJOOW it is oil-resistant thermoset. Both have an outer covering of oil-resistant thermoset.
142) Aah?! Well my table only shows for 3 and 2 current carrying conductor cables, is that perhaps why I'm off?
178) From the 2002 NEC Handbook, 200.6(B)
So I should have mentioned that green is excluded from "every other color."
222) No. Don't count it.
226) I'm gonna go with hot on top, reason being so if the connection is loose gravity keeps it on the terminal and off the enclosure. Gravity also may hepl keep it screwed down.
142) Aah?! Well my table only shows for 3 and 2 current carrying conductor cables, is that perhaps why I'm off?
178) From the 2002 NEC Handbook, 200.6(B)
Code:
... An insulated grounded conductor larger than 6 AWG shall be identified either by a continuous white or gray outer finish or by three continuous white stripes on other than green insulation along its entire length...So I should have mentioned that green is excluded from "every other color."
222) No. Don't count it.
226) I'm gonna go with hot on top, reason being so if the connection is loose gravity keeps it on the terminal and off the enclosure. Gravity also may hepl keep it screwed down.
79) What is Alternating Direct Current?
Alternating current: Current flow switches direction 120 times a second (or 100 for 50Hz places)
Direct current: Current flow is unidirectional
122) When using a generator, how many ohms resistance can the
grounding rod have?
The ground rod's resistance itself better be very low
Resistance to earth should be 25 ohms or less.
126) How many amps is 14ga SJ cable rated for?
15A, thoufh you need to derate if more than 3 current-carrying conductors (not ground or neutral ONLY in 3-phase use)
20A
35) Why would 12/3 SO cable be rated for more in amperage than 12/19 SO wire?
You neeed to derate due to heating caused by all the wires bundled together.
142) What is the minimum size wire which should be attached to an NEMA L21-30 plug?
30A plug - #10 wire
151) What is the proper name for Greenfield or BX cable?
BX is type AC (or is it MC?) Greenfield is LFMC
179) On European cable wired for 120v. what color is the neutral supposed to be?
blue
186) What happens inside a standard circuit breaker when it trips?
Either a bimetalic strip heats up to open the breaker or an electromagnet does it.
200) What is the difference between a 3-way and 4-way switch?
3-way is SPDT, 4-way is DPDT wired as a crossover. To switch a light from multiple places, you use 3-ways on each end and 4-ways in the middle.
203) On a switched circuit feeding through the lampholder, there are three wires, the Black, White and Red, which two wires would be correct to use to feed the lampholder?
In general, black is unswitched hot, red is switched, so the lampholder is wired between red and white.
205) The wires connected to the “A” and “B” terminals on a 3-way switch are called what? What color are they?
They are called travellers. They can be any color other than white, grey, or green.
216) Name three ways you can reduce grounding rod resistance in the soil.
Multiple ground rods, chemical ground rods or chemical soil treatments.
221) How do you “Float the Ground?”
You shouldn't. Using a 3-2 prong adapter and not connecting the ground tab or green pigtail, or by ripping off the ground pin of a 3-prong.
222) Do you count the neutral wire when determining the capacity of multi-cable or raceways?
Yes, in single-phase applications, usually not in 3-phase unless you have high harmonics
225) What is the current recommended practice for which side is up on a receptacle and why?
NEC doesn't spec this, but common wisdom is ground up, so something falling across the pins will bounce off the ground rather than welding itself across hot and neuitral.
226) When mounted horizontally, which side of a receptacle should be mounted up?
Hot
235) Why are household dimmers in a cord fed quad box frowned upon by the code?
They aren't rated for stage use. Also, a regular quad box (with knockouts) can't be cord-fed. Cord-fed boxes must have strain reliefs that thread into holes in the box.
243) Would a GFCI preform properly if fed by a 12/2 SPT-2 (Zip Cord)?
Sure. The GFCI trips if the current flowing on hot and neutral aren't the same. It doesn't care where the current is flowing. Plug-in GFCI testers won't be able to trip it without a ground, however.
255) How many volts does analog run off of?
0-10V
263) What problems might a switch or dimmer mounted on the neutral leg of a lamp cause?
The shell of the lamp will be hot (and a shock hazard) if the lamp is turned off.
Alternating current: Current flow switches direction 120 times a second (or 100 for 50Hz places)
Direct current: Current flow is unidirectional
122) When using a generator, how many ohms resistance can the
grounding rod have?
The ground rod's resistance itself better be very low
Resistance to earth should be 25 ohms or less.126) How many amps is 14ga SJ cable rated for?
15A, thoufh you need to derate if more than 3 current-carrying conductors (not ground or neutral ONLY in 3-phase use)
20A
35) Why would 12/3 SO cable be rated for more in amperage than 12/19 SO wire?
You neeed to derate due to heating caused by all the wires bundled together.
142) What is the minimum size wire which should be attached to an NEMA L21-30 plug?
30A plug - #10 wire
151) What is the proper name for Greenfield or BX cable?
BX is type AC (or is it MC?) Greenfield is LFMC
179) On European cable wired for 120v. what color is the neutral supposed to be?
blue
186) What happens inside a standard circuit breaker when it trips?
Either a bimetalic strip heats up to open the breaker or an electromagnet does it.
200) What is the difference between a 3-way and 4-way switch?
3-way is SPDT, 4-way is DPDT wired as a crossover. To switch a light from multiple places, you use 3-ways on each end and 4-ways in the middle.
203) On a switched circuit feeding through the lampholder, there are three wires, the Black, White and Red, which two wires would be correct to use to feed the lampholder?
In general, black is unswitched hot, red is switched, so the lampholder is wired between red and white.
205) The wires connected to the “A” and “B” terminals on a 3-way switch are called what? What color are they?
They are called travellers. They can be any color other than white, grey, or green.
216) Name three ways you can reduce grounding rod resistance in the soil.
Multiple ground rods, chemical ground rods or chemical soil treatments.
221) How do you “Float the Ground?”
You shouldn't. Using a 3-2 prong adapter and not connecting the ground tab or green pigtail, or by ripping off the ground pin of a 3-prong.
222) Do you count the neutral wire when determining the capacity of multi-cable or raceways?
Yes, in single-phase applications, usually not in 3-phase unless you have high harmonics
225) What is the current recommended practice for which side is up on a receptacle and why?
NEC doesn't spec this, but common wisdom is ground up, so something falling across the pins will bounce off the ground rather than welding itself across hot and neuitral.
226) When mounted horizontally, which side of a receptacle should be mounted up?
Hot
235) Why are household dimmers in a cord fed quad box frowned upon by the code?
They aren't rated for stage use. Also, a regular quad box (with knockouts) can't be cord-fed. Cord-fed boxes must have strain reliefs that thread into holes in the box.
243) Would a GFCI preform properly if fed by a 12/2 SPT-2 (Zip Cord)?
Sure. The GFCI trips if the current flowing on hot and neutral aren't the same. It doesn't care where the current is flowing. Plug-in GFCI testers won't be able to trip it without a ground, however.
255) How many volts does analog run off of?
0-10V
263) What problems might a switch or dimmer mounted on the neutral leg of a lamp cause?
The shell of the lamp will be hot (and a shock hazard) if the lamp is turned off.
n1ist said:
Very expert. Introduce yourself and welcome to the forum. By the way, as with Radman and all others, feel free to question and challenge or answer all questions or correct other answers. This is not a me thing, it's more that I presented some questions and all should have discussion both on answers and questions answered both for what I'm saying yes and no to subject to my own memory and to what other's answer.
Believe that the above #225 was a change to the NEC . Though I could be confused on proposed verses actual changes. Never fails to amaze me on even new work how much is done wrong.
However given both 225 and the code like description (I remember it as a 2005 code change), and 226, would it not make more sense the neutral is up? This in addition to the other question about medium screw lamp bases on what feeds the outer screw shell and why.
I was hoping someone would get #151 as an actual description and surprised by the lack of response to #178.
Radman said:
133) incorrect.
178) Perhaps it’s a change, but in the first reply it’s no longer necessitated to be continious, and I have never heard or seen of this three stripe rule other than in rare instances. If you have a panel with all black THHN wires feeding it, one not marked, one with a single each stripe of red, blue and white or grey and one green at times, you know what is what thus what is acceptable.
Where I stipulate and find a problem with the answer in general is the white or any “with stripe concept.” In general - unless marked, or not user serviceable with a guideline available such as in multi-cable, a black wire with a white stripe, or any color other than say green/yellow or white grey, would be hot in having a continuous stripe and secondary color to the main hot color. This gets into minor details of the code or multi-cable types having confusing stuff going on, but in general if I see a white with black stripe, it is hot. If I see a black with white stripe, it’s also hot.
Of your NEC reference, it states “continous finish” not stripe.
226) as the above thought or answer.
Radman
Well-Known Member
133) Hmm, now I'm stumped. The table in my version of NEC has them exactly the same except for that difference in the insulation. I don't specifically remember anything you could be looking for, unless one has purple lettering and the other doesn't. :/
178) The book says 3 stripes, so 1 stripe would not mean neutral, and therefore could still mean hot. Also just to clarify, when I said white AND gray, I meant white OR gray. I always see either solid white or solid gray, but which wire is neutral on a black zipline if one has a white stripe? Would you ever even see a cable like that?
Hmm, now I'm stumped. The table in my version of NEC has them exactly the same except for that difference in the insulation. I don't specifically remember anything you could be looking for, unless one has purple lettering and the other doesn't. :/178) The book says 3 stripes, so 1 stripe would not mean neutral, and therefore could still mean hot. Also just to clarify, when I said white AND gray, I meant white OR gray. I always see either solid white or solid gray, but which wire is neutral on a black zipline if one has a white stripe? Would you ever even see a cable like that?
133) see below... I believe much of it is what is currently in your NEC as with what's in earlier NEC texts by way of description. I won't answer the question, instead it's something that should be looked up below in figuring out the important difference.
178) Code also says that on zip cord the ribbed one is the neutral. That's been around for a while now. Think your code book is out of date. I studied the 99' version, you the next, I remember the changes to both. Think the 2005 version has corrected what we debate about in three verses one stripe plus the continious necessity. Neither of us has I think studied 2005 sufficiently. n1ist and others, you are welcome to jump in here as anywhere else.
On the other hand, if you open a service switch, pull box, or sub-panel and see five black wires inside it, one each is black, red, blue, white and green with a single stripe of color to each, would you really be thinking that a single white stripe is hot? That type of sensibility I think is move the motivation for this. For me, three stripes, while I have seen it before in use, is kind of a stupid rule.
If looking at some telephone cable looking multi-cable that has colors of every type and stripe on the other hand, there could be a good use for something like that. On the other hand, once it's multi-cable, it's non-user servicable parts and normally you get to use what ever wire fits your diagram as long as those servicing the equipment are able to meter or read the published spec for it. This such as on a Socapex cable where it's already common that wires marked as 13-18 will be a ground and even numbers a neutral, it would not be feasible to be using the three stripe tecnique.
Also given cable lay or where each conductor is inserted in a cable bundle, if one were to use the conductors of various stripe where they fall, one would also wind up with a rats nest worth of wires going everywhere.
Three stripes, seen it done, about 95% sure it's only one stripe these days needed.
Wire Cord And Cable Types:
-2- High temp. Designation for 194°F continuous use cable.
Vulcanized Insulators = Rubber
Non Vulcanized Insulators = Synthetic
Neoprene Insulators = Heat, Oil, Gas and weather resistant.
AF- Asbestos 302°F. Fixture wire,18-10 Awg. Heat resistant,With some moisture resistant types.300v. Max.
AL- Impregnated Asbestos Under 300v. 257°F., Dry only.
AVA, AVB, & AVL Asbestos and Varnished Cambric, 194-230°F., Dry with AVL wet.
B- Outer Braid usually of Glass.
Bell- wire usually low voltage, usually of 18awg. No rubber used, just 2 layers of cotton twisted in opposite directions.
C-Two or more stranded wires with flexible insulation for temporary use. Thermoset or Thermoplastic, Dry Use Only. Rough service wire, but not as nice looking as “PO”. Twice as thick in insulation but similar to “PO” with silk or Rayon top layer. Usually a yellow / green braided jacket, “Green and Yellow Cord”. No outer jacket to wires, just twisted single strands. Lamp Cord, 2 or more 18-10Awg. (Now is Thermoset or thermoplastic insulation with outer cotton cover.) Pendant and portable use, not hard usage in dry locations.
DBRC- Old Household, double braided rubber coated wire with cotton braid. Weather and fire resistant.
E- Elevator Cable, 2 or more, 20-2 Awg. Conductors, Thermoset, 3 layer cotton braided with flexible Flame retardant and Moisture Resistant Nylon jacket. For Elevator Lighting and Control in non-hazardous locations. Can incorporate 20 Awg Communications cable and or optical fibers within covering, and be permitted to be supported thru- center of insulation. “L.S” Designation =Limited Smoke flame retardant.
EO- Elevator Cable, Same as Above with one type available for Hazardous locations.
ET- Elevator Cable, Same as E, with a Rayon braid on each conductor.
ETLB- Same as E with No Braiding on each conductor.
ETP- Same as E with Rayon Braided Conductors and for Hazardous Classified Locations.
ETT- Same as ETP with No Outer Cover.
EV- Electric Vehicle Cord. 18 - 500 KCMil. Awg. Two or more conductors, plus grounding conductors and optional hybrid data or signal communications and optional fiberoptic cables. Thermoset with optional nylon insulation and optional braiding. Thermoset outer covering. For electric vehicle charging in wet locations and for extra hard use.
EVJ- Same as EV cord but 18 to 12 Awg, and thinner jacket.
EVE- Same as EV cord, but with thermoplastic Elastomer insulation and coverings.
EVT- Same as EV cord, but with Thermoplastic insulation.
F- Fixture Wire, 90°C.
FCC- Flat Copper Conductors, edge to edge for carpet, and under flooring.
FEP- Fluorinated Ethylene Propylene Insulation, Rated over 194°F. Dry only.
FEPB- Same as FeP, but with glass braid or Asbestos type outer covering. 392°F. Dry only.
FFH-2- Heat resistant rubber coated fixture wire, flexible strands, 167°F.Rubber coated and latex rubber coated types.
G- 8Awg to 500 KCMil., 2-6 conductors plus Grounding Conductors. Portable Thermoset, Oil Res., Extra Hard Use. Stage and Garage Cable.
H- Higher Loaded Current Temp. May be used 167°F. Max.
HF- ECTFE Solid or 7 stranded. 18-14 Awg. Ethylene Chloro trifluoroethylene. 302°F. Fixture wire.
HFF- ECTFE Stranded wire, same as HF.
HH- Much Higher Temperature 194°F. Max.
HPD- Heater Cord 18-12 Awg., 2 to 4 conductors. Dry Use Only. Thermoset or Thermoset with Asbestos covered wires instead of cotton, but similar to type C. Covered with cotton or Rayon. Not Hard usage.
HPN- Heater Cord, 18-12 Awg., 2 to 3 Conductors. Wet use, Light Duty Only. Oil resistant Thermoset. Non twisted.
HS- Heater Cord, 14-12 Awg., 2 to 4 Conductors. Thermoset insulation with cotton or Thermoset Outer Covering, Extra Hard Usage.
HSJ- Same as HS. But 18 - 12 Awg., Hard Usage only.
HSO- Same as HS. With Oil Resistance outer covering, Extra Hard Usage.
HSJO- Same as HSO but Only Hard Usage. 18 - 12 Awg Available.
HSOO- Same as HS. But with oil resistant Thermoset insulators, and oil resistant covering, Extra Hard Usage.
HSJOO- Same as HSOO but Hard Usage only and 18-12 Awg. Available.
IGS- Integrated Gas Spacer Cable, Exterior Use.
KF-1- and KF-2, Tape insulated fixture wire, solid or 7 stranded, 18-10 Awg. Aromatic Polyamide taped, 392°F. Fixture wire.
KFF-1- and KFF-2 Stranded KF wire, note: -1- designates 300v. Max.
L- Lead Jacket.
MI- Mineral Insulated, Metal Shielded cable. Magnesium Oxide, 194°F or 482°F., Dry or wet locations, with copper or Alloy Steel outer covering. Mineral insulated and Metal Shielded.
MTW- Moisture, Heat and Oil Res. Flame Retardant Thermoplastic. Machine tool wiring in wet locations 140°F. Or 196°F. In dry locations with Nylon or Equivalent Jacket.
MV- Medium Voltage Cable, Solid Dielectric 2,001 volts plus.
N -Extruded Nylon or Thermoplastic Polyester, Tough and Very Resistant to Gas and Oil.
NM- “Romex”, Non-Metallic cable with paper wrapping between conductors and plastic sheeting.
NMT- See RFH wire Below. (Non-Metallic Tubing.)
NMC- “Romex”, Non-Metallic cable with solid plastic sheeting.
O- Neoprene Jacket. See SO cable.
P- Rough Service appliance vacuum cleaner type cord. Flexible but like type “C”, coated in rubber like “POSJ”, encasing both strands with an appearance fabric outside layer.
PAF- Perfluroalkoxy, Solid or 7 strand, 482°F. Fixture wire, 18-14 Awg. nickel or nickel coated copper fixture wire. See PFA wire.
PAFF- Stranded PAF wire, 302°F.
PD- 18-10 Awg. Thermoset or Thermoplastic Insulation Cotton braiding and Cotton or Rayon outer covering. Pendant or Portable Wiring, Dry Locations, Not Hard Usage. Twisted Portable Cord.
PF- Fluorinated Ethylene Propylene, fixture wire, solid or seven stranded 392°F. 18-14 Awg. Fixture wire.
PFA- Perfluorglkoxy, 194°F. For dry and damp conditions. See PAF wire.
PFAH- Perfluorglkoxy, 482°F. Dry only, Raceway or Apparatus wire only.
PFF- Same as PF wire, but stranded. 302°F.
PGF- Fluorinated Ethylene Propylene, Glass Braided. 392°F. Solid or seven stranded. 18-14 Awg. Fixture Wire.
PGFF- Stranded PGF wire, 302° F.
PO- Lamp cord with outer layer of silk or Rayon. Wires not Twisted but Parallel. Cotton yarn wrapping round twisted strands; Insulators of rubber on top of cotton, which insulates rubber from sticking to strands making it more flexible. Cotton layer atop Rubber, with Rayon or silk jacket enclosing two wires in parallel.
POSJ- New Replacement for “PO” using a rubber jacket encasing both wires, and does not fray like fabric wires, can be washed.
PPE- Portable Power Cable, 8 - 500 KCMil. With 1 - 6 conductors plus ground conductors. Thermoplastic Elastomer Insulation, with Oil Resistant Thermoplastic Elastomer Outer Covering. Portable Extra Hard Use. Rated for Stage and Garage use.
PTF- Extruded Polytetra Fluoroethylene, solid or seven stranded, 18-14 Awg. 482°F. Nickel or Nickel coated copper fixture wire.
PTFF- Stranded PTF wire, 302°F. 18-14 Awg.
R- Rubber or Neoprene insulation. (Best Quality Rubber) Household Wiring.
RFH-1- Heat Resistant, Rubber Coated, 167°F. 18 Awg. 300v. Fixture wire, solid or seven stranded. Also type “NMT” Fixture wire.
RFH-2- Heat Resistant, RFH wire, 18-16 Awg. 600v. with Latex Rubber or rubber coating. Otherwise the same as RFH-1
RFHH-2- (LS) Limited Smoke Flame Retardant, Heat Resistant Cross linked synthetic polymer insulated fixture wire. Solid or stranded 18-16 Awg. and cross linked synthetic polymer with out jacket. No cover or NMT 194°F. Multi conductor cable, and fixture wire.
RH- Thermoset, 167°F. Dry and Damp only, Flame Retardant, and Moisture Resistant. Best Quality, Better than RH and RP wire. For Factories and like. Moisture Res. & Flame Retardant non-metallic Covering.
RHH- Thermoset, 194°F. Dry and Damp only, Flame Retardant, and Moisture Resistant.
RP- Best Quality Rubber Insulation.
RUH- Heat Resistant Latex Rubber 167°F., Dry only.
RWH- Flame, Ozone and Moisture Resistant, 167° F. For dry and wet locations over 2,000 volts.
RWH-2- 194°F. Continuous Temperature Thermoset. For Dry and Damp locations.
S- Hard Service Cord with two or more stranded conductors 18 - 2 Awg. with a serving of woven cotton between the copper and the Thermoset insulation. Jute or other “fillers” are twisted together with the conductors to make a round assembly. Outer jacket of high quality rubber or modern Thermoset. For Portable or Pendant, damp locations. Extra Hard Use. Stage and Garage Use.
SA- Silicone Rubber or Silicone Asbestos, 194°F. For dry and Damp Areas. Silicone Rubber insulation with Glass or other Braided covering. (392°F. Special Applications)
SBRC- Old Household, Single Braided rubber covered with cotton braid.
SC- “NEC” designation for Entertainment Industry and Stage Lighting Cable; rated 600 volts 8 - 250 KCMil.
Awg., 1 or more Conductors. Extra Hard Usage. Thermoset insulation and outer covering.
SCE- Same as SC, with PVC or Thermoplastic Elastomer Insulation and outer covering.
SCT- Same as SC, with TPE based thermoplastic Insulation and outer covering.
SE- Flame Retardant and Moisture Resistant, Hard Service Cord. 18 -2 Awg. 2 or more conductors, Use Underground, stage and Garage and not Fire Resistant. Thermoplastic Elastomer Insulation and outer covering.
SEO- Same as SE But with Oil Resistant Outer Covering.
SEOO- Same as SEO, But with oil Resistant Insulation also.
SIS- Switchboard wire 194°F. Thermoplastic Flame Resistant for Switchboards. Synthetic Heat resistant Rubber. Dry only.
SJ- Same as S-Cord, with Lighter Jacket 18-10 Awg. 2-5 Conductors, Thermoset Insulation and outer jacket. Junior Hard service Cord.
SJE- Same as SJ, with Thermoplastic Elastomer Insulation and outer covering.
SJEO- Same as SJE But Oil Resistant.
SJO- Same as SJ But with Oil Resistant outer covering. Same as SO cord, with an even lighter jacket.
SJOO- Same as SJO But with Oil resistant insulation also.
SJT- Same as SJ cord, except with outer jacket and insulation of (thermoplastic) Materials.
SF- Silicone 200°C. Fixture wire.
SF-1or 2- Silicone Rubber NMT, 392°F. “-1" is 18 Awg. 300v. “-2" is 16-18 Awg. 600v. Solid or seven stranded. Fixture wire.
SFF-1or 2- Stranded SF, NMT wire. 302°F.
SO- Cord, same as S cord, thermoset insulation with an oil resistant jacket of neoprene or similar material thermoset. Rated for stage and garage use.
SOO- Same as SO with Oil Resistant Insulation
SN- Synthetic rubber wire re-named “type T”, in 1947 from original 1940 code designation thermoplastic insulation, with no cotton required, not cold resistant.
SP- Rubber “Zip Cord”.
SP-1- All Thermoset Parallel cord 20 -18 Awg, 2or3 Conductor. Pendant or portable use, Damp Locations, Not Hard Use. Not twisted.
SP-2- Same as SP-1 but 18-16 Awg.
SP-3- Same as SP-1 But 18-10 Awg. For Refrigerators, Room Air Conditioners.
SPE- All Elastomer, (Thermoplastic) Parallel Cord. 20-18 Awg. 2 or 3 Conductors. Otherwise same as SP-1 to 3 Cord.
SPT- “Zip Cord”, Fixture Cord, 2 or 3 wire Stranded, Designated by gauge and number of wires. Eg: “18-3" is 18 gauge 3-wire. Thermoplastic Insulation. Otherwise same as Sp-1 to 3 cord.
SRD- Range or Dryer Cable. 10- 4 Awg. 3 or 4 conductors. Thermoset insulation and outer covering. Portable for damp locations. 3-Conductor versions are not twisted.
SRDE- Same as SRD cable but Thermoplastic Elastomer insulation and outer covering.
SRDT- Same as SRD cable but with Thermoplastic insulation and outer covering.
ST- Same as S cord, except with outer jacket of (thermoplastic) Materials. 18-2 Awg. 2 or more Conductors. Rated for Stage and Garage Use.
SV- Same as SJ Cord, with an even Lighter Jacket. Vacuum cleaner cord. 18-16 Awg. 2 or 3 conductors. Thermoset insulation and covering. Not hard use, pendant or portable, damp locations.
SVE- Same as SV cord but with Thermoplastic Elastomer insulation and covering.
SVO- Same as SV cord but with Thermoset insulation and oil resistant Thermoset covering.
SVT- Same as SV cord with outer jacket of (therm plastic) Materials.
T- Wire wrapped in thermoplastic insulation for protection from below 32° to 150°. Tinsel Cord 140°F,(TP, TS, TPT, TST)
TA- Thermoplastic and Asbestos, 194°F., Switchboard use only.
TC- Signal Wire, Power and Control.
TW- T-Wire with water-resistant insulation. Should not be buried directly in ground. 140° Flame Retardant, Heat and Moisture resistant thermoplastic.
TBS- Thermoplastic with Fibrous outer braid, 194°F. Fire Retardant (Switch Boards).
TBWP- Triple Braided weather proof with no rubber used, 3 layers of water proof cotton used on single wire outdoors services.
T2- Thermoplastic covered fixture wire, solid or 7 stranded. 140°F. 18-16 Awg. Fixture Wire.
TFE- Extended Polytetrafluoroethylene. 482°F. Dry Locations only, Apparatus or Raceway lead wiring or open wiring, Avl. With Nickel or nickel coated copper wire only.
TFF- Same as T2 wire but stranded, 140°F.
TFN- Heat Resistant Thermoplastic covered fixture wire of solid or seven strands. 18-16 Awg. And a nylon jacket or equivalent covering 194°F.
TFNN- Same as TFN but stranded.
THW- TW-Wire 167°F. With heavier heat resistant insulation. Dry and Wet Locations, Flame Retardant. (194°F. Special Applications within electric discharge lighting equipment, 1,000w. open circuits or less.)
THHN- Thermoplastic 194°F. Insulation with outer nylon (or equivalent) jacket Heat Resistant, Flame Retardant with nylon or equivalent jacket. Dry and Damp Locations.
THHW- Thermoplastic 167°F. Wet Locations. Flame Retardant, Heat Resistant. (194°F. Dry Locations.)
TFE- Extruded Polytetra Fluoroethylene. 482°F. Dry areas only for Apparatus and raceway wiring or open wiring.
THWN- Thermoplastic insulation, 167°F. with outer nylon (or equivalent) jacket; Flame Retardant, Heat and Water Resistant.
TPE - ‘Flexalloy is a PVC based UHMW therrmoplastic elastomer from Teknor Apex, Vinyl Division, that is billed as being “lighter, more flexible, and more resistant to extreme cold” than cable producted with conventional compounds. Coast Wire and Plastics Technology is using it to jacket a new line of cable that they manufacture, called FlexOLite Touring Cable. The Flexalloy compound is used for the inner insulation and for the outer jacket. “One bigh advantage of Flexalloy vinyl TPE for insulation and jacketing is that it weighs only half as much as rubber,” - Jim Crisman, VP of the Entertainment Div. Of Coast Wire (PLSN p77 Cable Construction, Nov. 2003.
TPT- Parallel Tinsel cord. 27 Awg. 2 conductor. Thermoplastic insulation and covering. Attached to an appliance rated at not more than 50 watts and not more than 8 feet away with a special connector, for damp locations and not hard, but extremely flexible use. Not Twisted conductors.
TS- Jacketed Tinsel cord. 27 Awg. 2 conductor. Thermoset insulation and covering, same as TPT otherwise.
TST- Same as TS cord but with thermoplastic insulation and covering.
UF- Underground Feeder and Branch Circuit Cable, 140°F. a water proof version of NMC, rated for burial in the ground.
USE- Underground Service Entrance Cable not fire resistant but high temp. Wire 167°F. Replaces Lead shielded cable. Heavily rubber coated, with outer covering extra water resistant, can also be type “T” with thermoplastic protection.
V- Varnished Cambric, #6 to MCM2000, 185°F., Dry use only.
W- Cord Rated 2,000 volts Extra Hard Usage; 8-500 KCMil. 1-6 conductors. Replaced welding cable as in acceptable stage cable until type SC was developed. Thermoset insulation with Oil Resistant Thermoset cover. Rated for Stage and garage use.
X- Crossed linked Synthetic polymer, Very Tough, Moisture and Heat Resistant. Fixture wire.
XF- Same as X wire but solid or seven stranded, 302°F. 300v. 18-10Awg. Cross-Linked Polyolefin.
XFF- Same as XF, but stranded.
XHH- Thermoset, 194°F. Dry and damp locations. Flame Retardant.
XHHW- Moisture Resistant Thermoset, 194°F. For dry and Damp locations and 167°F. For wet locations. Flame Retardant, and moisture resistant.
Z-Dry and Damp Locations, 194°F.(302°F.Dry locations in special applications) Modified Ethylene Tetrafluoroethylene.
ZF- Modified ethylene tetrafluoroethylene, solid or seven stranded, 18-14 Awg. same as Z above, 302°F. Fixture Wire.
ZFF- Same as ZF above but stranded.
ZHF- High temperature modified ETFE solid or seven stranded. 392°F. 18-14 Awg. Fixture wire.
ZW- Modified Ethylene Tetrafluoroethylene Wet Locations, 167°F.; (194°F. Dry and Damp; 302°F. Dry, special Applications).
178) Code also says that on zip cord the ribbed one is the neutral. That's been around for a while now. Think your code book is out of date. I studied the 99' version, you the next, I remember the changes to both. Think the 2005 version has corrected what we debate about in three verses one stripe plus the continious necessity. Neither of us has I think studied 2005 sufficiently. n1ist and others, you are welcome to jump in here as anywhere else.
On the other hand, if you open a service switch, pull box, or sub-panel and see five black wires inside it, one each is black, red, blue, white and green with a single stripe of color to each, would you really be thinking that a single white stripe is hot? That type of sensibility I think is move the motivation for this. For me, three stripes, while I have seen it before in use, is kind of a stupid rule.
If looking at some telephone cable looking multi-cable that has colors of every type and stripe on the other hand, there could be a good use for something like that. On the other hand, once it's multi-cable, it's non-user servicable parts and normally you get to use what ever wire fits your diagram as long as those servicing the equipment are able to meter or read the published spec for it. This such as on a Socapex cable where it's already common that wires marked as 13-18 will be a ground and even numbers a neutral, it would not be feasible to be using the three stripe tecnique.
Also given cable lay or where each conductor is inserted in a cable bundle, if one were to use the conductors of various stripe where they fall, one would also wind up with a rats nest worth of wires going everywhere.
Three stripes, seen it done, about 95% sure it's only one stripe these days needed.
Wire Cord And Cable Types:
-2- High temp. Designation for 194°F continuous use cable.
Vulcanized Insulators = Rubber
Non Vulcanized Insulators = Synthetic
Neoprene Insulators = Heat, Oil, Gas and weather resistant.
AF- Asbestos 302°F. Fixture wire,18-10 Awg. Heat resistant,With some moisture resistant types.300v. Max.
AL- Impregnated Asbestos Under 300v. 257°F., Dry only.
AVA, AVB, & AVL Asbestos and Varnished Cambric, 194-230°F., Dry with AVL wet.
B- Outer Braid usually of Glass.
Bell- wire usually low voltage, usually of 18awg. No rubber used, just 2 layers of cotton twisted in opposite directions.
C-Two or more stranded wires with flexible insulation for temporary use. Thermoset or Thermoplastic, Dry Use Only. Rough service wire, but not as nice looking as “PO”. Twice as thick in insulation but similar to “PO” with silk or Rayon top layer. Usually a yellow / green braided jacket, “Green and Yellow Cord”. No outer jacket to wires, just twisted single strands. Lamp Cord, 2 or more 18-10Awg. (Now is Thermoset or thermoplastic insulation with outer cotton cover.) Pendant and portable use, not hard usage in dry locations.
DBRC- Old Household, double braided rubber coated wire with cotton braid. Weather and fire resistant.
E- Elevator Cable, 2 or more, 20-2 Awg. Conductors, Thermoset, 3 layer cotton braided with flexible Flame retardant and Moisture Resistant Nylon jacket. For Elevator Lighting and Control in non-hazardous locations. Can incorporate 20 Awg Communications cable and or optical fibers within covering, and be permitted to be supported thru- center of insulation. “L.S” Designation =Limited Smoke flame retardant.
EO- Elevator Cable, Same as Above with one type available for Hazardous locations.
ET- Elevator Cable, Same as E, with a Rayon braid on each conductor.
ETLB- Same as E with No Braiding on each conductor.
ETP- Same as E with Rayon Braided Conductors and for Hazardous Classified Locations.
ETT- Same as ETP with No Outer Cover.
EV- Electric Vehicle Cord. 18 - 500 KCMil. Awg. Two or more conductors, plus grounding conductors and optional hybrid data or signal communications and optional fiberoptic cables. Thermoset with optional nylon insulation and optional braiding. Thermoset outer covering. For electric vehicle charging in wet locations and for extra hard use.
EVJ- Same as EV cord but 18 to 12 Awg, and thinner jacket.
EVE- Same as EV cord, but with thermoplastic Elastomer insulation and coverings.
EVT- Same as EV cord, but with Thermoplastic insulation.
F- Fixture Wire, 90°C.
FCC- Flat Copper Conductors, edge to edge for carpet, and under flooring.
FEP- Fluorinated Ethylene Propylene Insulation, Rated over 194°F. Dry only.
FEPB- Same as FeP, but with glass braid or Asbestos type outer covering. 392°F. Dry only.
FFH-2- Heat resistant rubber coated fixture wire, flexible strands, 167°F.Rubber coated and latex rubber coated types.
G- 8Awg to 500 KCMil., 2-6 conductors plus Grounding Conductors. Portable Thermoset, Oil Res., Extra Hard Use. Stage and Garage Cable.
H- Higher Loaded Current Temp. May be used 167°F. Max.
HF- ECTFE Solid or 7 stranded. 18-14 Awg. Ethylene Chloro trifluoroethylene. 302°F. Fixture wire.
HFF- ECTFE Stranded wire, same as HF.
HH- Much Higher Temperature 194°F. Max.
HPD- Heater Cord 18-12 Awg., 2 to 4 conductors. Dry Use Only. Thermoset or Thermoset with Asbestos covered wires instead of cotton, but similar to type C. Covered with cotton or Rayon. Not Hard usage.
HPN- Heater Cord, 18-12 Awg., 2 to 3 Conductors. Wet use, Light Duty Only. Oil resistant Thermoset. Non twisted.
HS- Heater Cord, 14-12 Awg., 2 to 4 Conductors. Thermoset insulation with cotton or Thermoset Outer Covering, Extra Hard Usage.
HSJ- Same as HS. But 18 - 12 Awg., Hard Usage only.
HSO- Same as HS. With Oil Resistance outer covering, Extra Hard Usage.
HSJO- Same as HSO but Only Hard Usage. 18 - 12 Awg Available.
HSOO- Same as HS. But with oil resistant Thermoset insulators, and oil resistant covering, Extra Hard Usage.
HSJOO- Same as HSOO but Hard Usage only and 18-12 Awg. Available.
IGS- Integrated Gas Spacer Cable, Exterior Use.
KF-1- and KF-2, Tape insulated fixture wire, solid or 7 stranded, 18-10 Awg. Aromatic Polyamide taped, 392°F. Fixture wire.
KFF-1- and KFF-2 Stranded KF wire, note: -1- designates 300v. Max.
L- Lead Jacket.
MI- Mineral Insulated, Metal Shielded cable. Magnesium Oxide, 194°F or 482°F., Dry or wet locations, with copper or Alloy Steel outer covering. Mineral insulated and Metal Shielded.
MTW- Moisture, Heat and Oil Res. Flame Retardant Thermoplastic. Machine tool wiring in wet locations 140°F. Or 196°F. In dry locations with Nylon or Equivalent Jacket.
MV- Medium Voltage Cable, Solid Dielectric 2,001 volts plus.
N -Extruded Nylon or Thermoplastic Polyester, Tough and Very Resistant to Gas and Oil.
NM- “Romex”, Non-Metallic cable with paper wrapping between conductors and plastic sheeting.
NMT- See RFH wire Below. (Non-Metallic Tubing.)
NMC- “Romex”, Non-Metallic cable with solid plastic sheeting.
O- Neoprene Jacket. See SO cable.
P- Rough Service appliance vacuum cleaner type cord. Flexible but like type “C”, coated in rubber like “POSJ”, encasing both strands with an appearance fabric outside layer.
PAF- Perfluroalkoxy, Solid or 7 strand, 482°F. Fixture wire, 18-14 Awg. nickel or nickel coated copper fixture wire. See PFA wire.
PAFF- Stranded PAF wire, 302°F.
PD- 18-10 Awg. Thermoset or Thermoplastic Insulation Cotton braiding and Cotton or Rayon outer covering. Pendant or Portable Wiring, Dry Locations, Not Hard Usage. Twisted Portable Cord.
PF- Fluorinated Ethylene Propylene, fixture wire, solid or seven stranded 392°F. 18-14 Awg. Fixture wire.
PFA- Perfluorglkoxy, 194°F. For dry and damp conditions. See PAF wire.
PFAH- Perfluorglkoxy, 482°F. Dry only, Raceway or Apparatus wire only.
PFF- Same as PF wire, but stranded. 302°F.
PGF- Fluorinated Ethylene Propylene, Glass Braided. 392°F. Solid or seven stranded. 18-14 Awg. Fixture Wire.
PGFF- Stranded PGF wire, 302° F.
PO- Lamp cord with outer layer of silk or Rayon. Wires not Twisted but Parallel. Cotton yarn wrapping round twisted strands; Insulators of rubber on top of cotton, which insulates rubber from sticking to strands making it more flexible. Cotton layer atop Rubber, with Rayon or silk jacket enclosing two wires in parallel.
POSJ- New Replacement for “PO” using a rubber jacket encasing both wires, and does not fray like fabric wires, can be washed.
PPE- Portable Power Cable, 8 - 500 KCMil. With 1 - 6 conductors plus ground conductors. Thermoplastic Elastomer Insulation, with Oil Resistant Thermoplastic Elastomer Outer Covering. Portable Extra Hard Use. Rated for Stage and Garage use.
PTF- Extruded Polytetra Fluoroethylene, solid or seven stranded, 18-14 Awg. 482°F. Nickel or Nickel coated copper fixture wire.
PTFF- Stranded PTF wire, 302°F. 18-14 Awg.
R- Rubber or Neoprene insulation. (Best Quality Rubber) Household Wiring.
RFH-1- Heat Resistant, Rubber Coated, 167°F. 18 Awg. 300v. Fixture wire, solid or seven stranded. Also type “NMT” Fixture wire.
RFH-2- Heat Resistant, RFH wire, 18-16 Awg. 600v. with Latex Rubber or rubber coating. Otherwise the same as RFH-1
RFHH-2- (LS) Limited Smoke Flame Retardant, Heat Resistant Cross linked synthetic polymer insulated fixture wire. Solid or stranded 18-16 Awg. and cross linked synthetic polymer with out jacket. No cover or NMT 194°F. Multi conductor cable, and fixture wire.
RH- Thermoset, 167°F. Dry and Damp only, Flame Retardant, and Moisture Resistant. Best Quality, Better than RH and RP wire. For Factories and like. Moisture Res. & Flame Retardant non-metallic Covering.
RHH- Thermoset, 194°F. Dry and Damp only, Flame Retardant, and Moisture Resistant.
RP- Best Quality Rubber Insulation.
RUH- Heat Resistant Latex Rubber 167°F., Dry only.
RWH- Flame, Ozone and Moisture Resistant, 167° F. For dry and wet locations over 2,000 volts.
RWH-2- 194°F. Continuous Temperature Thermoset. For Dry and Damp locations.
S- Hard Service Cord with two or more stranded conductors 18 - 2 Awg. with a serving of woven cotton between the copper and the Thermoset insulation. Jute or other “fillers” are twisted together with the conductors to make a round assembly. Outer jacket of high quality rubber or modern Thermoset. For Portable or Pendant, damp locations. Extra Hard Use. Stage and Garage Use.
SA- Silicone Rubber or Silicone Asbestos, 194°F. For dry and Damp Areas. Silicone Rubber insulation with Glass or other Braided covering. (392°F. Special Applications)
SBRC- Old Household, Single Braided rubber covered with cotton braid.
SC- “NEC” designation for Entertainment Industry and Stage Lighting Cable; rated 600 volts 8 - 250 KCMil.
Awg., 1 or more Conductors. Extra Hard Usage. Thermoset insulation and outer covering.
SCE- Same as SC, with PVC or Thermoplastic Elastomer Insulation and outer covering.
SCT- Same as SC, with TPE based thermoplastic Insulation and outer covering.
SE- Flame Retardant and Moisture Resistant, Hard Service Cord. 18 -2 Awg. 2 or more conductors, Use Underground, stage and Garage and not Fire Resistant. Thermoplastic Elastomer Insulation and outer covering.
SEO- Same as SE But with Oil Resistant Outer Covering.
SEOO- Same as SEO, But with oil Resistant Insulation also.
SIS- Switchboard wire 194°F. Thermoplastic Flame Resistant for Switchboards. Synthetic Heat resistant Rubber. Dry only.
SJ- Same as S-Cord, with Lighter Jacket 18-10 Awg. 2-5 Conductors, Thermoset Insulation and outer jacket. Junior Hard service Cord.
SJE- Same as SJ, with Thermoplastic Elastomer Insulation and outer covering.
SJEO- Same as SJE But Oil Resistant.
SJO- Same as SJ But with Oil Resistant outer covering. Same as SO cord, with an even lighter jacket.
SJOO- Same as SJO But with Oil resistant insulation also.
SJT- Same as SJ cord, except with outer jacket and insulation of (thermoplastic) Materials.
SF- Silicone 200°C. Fixture wire.
SF-1or 2- Silicone Rubber NMT, 392°F. “-1" is 18 Awg. 300v. “-2" is 16-18 Awg. 600v. Solid or seven stranded. Fixture wire.
SFF-1or 2- Stranded SF, NMT wire. 302°F.
SO- Cord, same as S cord, thermoset insulation with an oil resistant jacket of neoprene or similar material thermoset. Rated for stage and garage use.
SOO- Same as SO with Oil Resistant Insulation
SN- Synthetic rubber wire re-named “type T”, in 1947 from original 1940 code designation thermoplastic insulation, with no cotton required, not cold resistant.
SP- Rubber “Zip Cord”.
SP-1- All Thermoset Parallel cord 20 -18 Awg, 2or3 Conductor. Pendant or portable use, Damp Locations, Not Hard Use. Not twisted.
SP-2- Same as SP-1 but 18-16 Awg.
SP-3- Same as SP-1 But 18-10 Awg. For Refrigerators, Room Air Conditioners.
SPE- All Elastomer, (Thermoplastic) Parallel Cord. 20-18 Awg. 2 or 3 Conductors. Otherwise same as SP-1 to 3 Cord.
SPT- “Zip Cord”, Fixture Cord, 2 or 3 wire Stranded, Designated by gauge and number of wires. Eg: “18-3" is 18 gauge 3-wire. Thermoplastic Insulation. Otherwise same as Sp-1 to 3 cord.
SRD- Range or Dryer Cable. 10- 4 Awg. 3 or 4 conductors. Thermoset insulation and outer covering. Portable for damp locations. 3-Conductor versions are not twisted.
SRDE- Same as SRD cable but Thermoplastic Elastomer insulation and outer covering.
SRDT- Same as SRD cable but with Thermoplastic insulation and outer covering.
ST- Same as S cord, except with outer jacket of (thermoplastic) Materials. 18-2 Awg. 2 or more Conductors. Rated for Stage and Garage Use.
SV- Same as SJ Cord, with an even Lighter Jacket. Vacuum cleaner cord. 18-16 Awg. 2 or 3 conductors. Thermoset insulation and covering. Not hard use, pendant or portable, damp locations.
SVE- Same as SV cord but with Thermoplastic Elastomer insulation and covering.
SVO- Same as SV cord but with Thermoset insulation and oil resistant Thermoset covering.
SVT- Same as SV cord with outer jacket of (therm plastic) Materials.
T- Wire wrapped in thermoplastic insulation for protection from below 32° to 150°. Tinsel Cord 140°F,(TP, TS, TPT, TST)
TA- Thermoplastic and Asbestos, 194°F., Switchboard use only.
TC- Signal Wire, Power and Control.
TW- T-Wire with water-resistant insulation. Should not be buried directly in ground. 140° Flame Retardant, Heat and Moisture resistant thermoplastic.
TBS- Thermoplastic with Fibrous outer braid, 194°F. Fire Retardant (Switch Boards).
TBWP- Triple Braided weather proof with no rubber used, 3 layers of water proof cotton used on single wire outdoors services.
T2- Thermoplastic covered fixture wire, solid or 7 stranded. 140°F. 18-16 Awg. Fixture Wire.
TFE- Extended Polytetrafluoroethylene. 482°F. Dry Locations only, Apparatus or Raceway lead wiring or open wiring, Avl. With Nickel or nickel coated copper wire only.
TFF- Same as T2 wire but stranded, 140°F.
TFN- Heat Resistant Thermoplastic covered fixture wire of solid or seven strands. 18-16 Awg. And a nylon jacket or equivalent covering 194°F.
TFNN- Same as TFN but stranded.
THW- TW-Wire 167°F. With heavier heat resistant insulation. Dry and Wet Locations, Flame Retardant. (194°F. Special Applications within electric discharge lighting equipment, 1,000w. open circuits or less.)
THHN- Thermoplastic 194°F. Insulation with outer nylon (or equivalent) jacket Heat Resistant, Flame Retardant with nylon or equivalent jacket. Dry and Damp Locations.
THHW- Thermoplastic 167°F. Wet Locations. Flame Retardant, Heat Resistant. (194°F. Dry Locations.)
TFE- Extruded Polytetra Fluoroethylene. 482°F. Dry areas only for Apparatus and raceway wiring or open wiring.
THWN- Thermoplastic insulation, 167°F. with outer nylon (or equivalent) jacket; Flame Retardant, Heat and Water Resistant.
TPE - ‘Flexalloy is a PVC based UHMW therrmoplastic elastomer from Teknor Apex, Vinyl Division, that is billed as being “lighter, more flexible, and more resistant to extreme cold” than cable producted with conventional compounds. Coast Wire and Plastics Technology is using it to jacket a new line of cable that they manufacture, called FlexOLite Touring Cable. The Flexalloy compound is used for the inner insulation and for the outer jacket. “One bigh advantage of Flexalloy vinyl TPE for insulation and jacketing is that it weighs only half as much as rubber,” - Jim Crisman, VP of the Entertainment Div. Of Coast Wire (PLSN p77 Cable Construction, Nov. 2003.
TPT- Parallel Tinsel cord. 27 Awg. 2 conductor. Thermoplastic insulation and covering. Attached to an appliance rated at not more than 50 watts and not more than 8 feet away with a special connector, for damp locations and not hard, but extremely flexible use. Not Twisted conductors.
TS- Jacketed Tinsel cord. 27 Awg. 2 conductor. Thermoset insulation and covering, same as TPT otherwise.
TST- Same as TS cord but with thermoplastic insulation and covering.
UF- Underground Feeder and Branch Circuit Cable, 140°F. a water proof version of NMC, rated for burial in the ground.
USE- Underground Service Entrance Cable not fire resistant but high temp. Wire 167°F. Replaces Lead shielded cable. Heavily rubber coated, with outer covering extra water resistant, can also be type “T” with thermoplastic protection.
V- Varnished Cambric, #6 to MCM2000, 185°F., Dry use only.
W- Cord Rated 2,000 volts Extra Hard Usage; 8-500 KCMil. 1-6 conductors. Replaced welding cable as in acceptable stage cable until type SC was developed. Thermoset insulation with Oil Resistant Thermoset cover. Rated for Stage and garage use.
X- Crossed linked Synthetic polymer, Very Tough, Moisture and Heat Resistant. Fixture wire.
XF- Same as X wire but solid or seven stranded, 302°F. 300v. 18-10Awg. Cross-Linked Polyolefin.
XFF- Same as XF, but stranded.
XHH- Thermoset, 194°F. Dry and damp locations. Flame Retardant.
XHHW- Moisture Resistant Thermoset, 194°F. For dry and Damp locations and 167°F. For wet locations. Flame Retardant, and moisture resistant.
Z-Dry and Damp Locations, 194°F.(302°F.Dry locations in special applications) Modified Ethylene Tetrafluoroethylene.
ZF- Modified ethylene tetrafluoroethylene, solid or seven stranded, 18-14 Awg. same as Z above, 302°F. Fixture Wire.
ZFF- Same as ZF above but stranded.
ZHF- High temperature modified ETFE solid or seven stranded. 392°F. 18-14 Awg. Fixture wire.
ZW- Modified Ethylene Tetrafluoroethylene Wet Locations, 167°F.; (194°F. Dry and Damp; 302°F. Dry, special Applications).
Radman
Well-Known Member
Original question:
Argument:
W designates suitable for damp or wet locations, so
SJOW (SJO+W)- Same as SJO but waterproof.
SJOOW (SJOO+W)- Same as SJOO but waterproof.
I don't see how this tells me anymore than my table in the NEC. The difference is the same as that between SJO and SJOO, so:
My answer:
So now I'm just plain confused.
Unlesss you are being picky on me leaving out that they are both waterproof, which really has no relevence the difference.
Ship said:
Argument:
Ship said:
W designates suitable for damp or wet locations, so
SJOW (SJO+W)- Same as SJO but waterproof.
SJOOW (SJOO+W)- Same as SJOO but waterproof.
I don't see how this tells me anymore than my table in the NEC. The difference is the same as that between SJO and SJOO, so:
My answer:
Radman said:
So now I'm just plain confused.
Unlesss you are being picky on me leaving out that they are both waterproof, which really has no relevence the difference.
S - Rubberized,
J - Junior hard service Jacket
O - Oil Resistant outer coating to the outer jacket of the cable.
O - Oil Resistant inner coating on each of the individual conductors.
W - Water Resistant.
How's that for simple? this given there is differences in type S insulation would be the only flexible term here in what it's made out of.
J - Junior hard service Jacket
O - Oil Resistant outer coating to the outer jacket of the cable.
O - Oil Resistant inner coating on each of the individual conductors.
W - Water Resistant.
How's that for simple? this given there is differences in type S insulation would be the only flexible term here in what it's made out of.
May just be because Australia doesn't use this system that I am confused by the way you have written this ship.
Desen't "O" just refer to the presence of an Oil Resistant coating, and it is the number of O's that determines jacket only or individual conductors as well.
Thus "O" indicates an Oil Resistant coating to the outer jacket of the cable.
"OO" would then indicate an Oil Resistant inner coating on each of the individual conductors (in addition to the outer jacket).
Thus the difference between SJOW and SJOOW is that whilst both have an oil resistant out jacket, the SJOOW has added protection in that the individual conductors also have an oil resistant coating.
Desen't "O" just refer to the presence of an Oil Resistant coating, and it is the number of O's that determines jacket only or individual conductors as well.
Thus "O" indicates an Oil Resistant coating to the outer jacket of the cable.
"OO" would then indicate an Oil Resistant inner coating on each of the individual conductors (in addition to the outer jacket).
Thus the difference between SJOW and SJOOW is that whilst both have an oil resistant out jacket, the SJOOW has added protection in that the individual conductors also have an oil resistant coating.
