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20 AMP Stinger

Discussion in 'Lighting and Electrics' started by Edrick, Oct 5, 2008.

  1. Edrick

    Edrick Well-Known Member Premium Member

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    Hey,

    I'm looking to buy a 20 AMP Extension cord however I'm not looking for the cheap ones at home depot. Does anyone have any recommendations on where I could buy a 20 AMP Extension Cord (Stinger). The heavy duty black ones with the heavy duty ends out of hard plastic not the rubber. I want to buy them online I know I could probably go to a place like Barbizon and buy one but I'd like to buy online.
     
  2. soundlight

    soundlight Well-Known Member

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  3. Edrick

    Edrick Well-Known Member Premium Member

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    I was thinking of doing that I do enjoy making my self a good extension cord however I don't have any method of getting to a home depot or a lowes or a supply house for that matter. So I was trying to see if there were any online places I could buy a few 25 footers.
     
  4. soundlight

    soundlight Well-Known Member

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  5. Edrick

    Edrick Well-Known Member Premium Member

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  6. ship

    ship Senior Team Emeritus Premium Member

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    A stringer is not a jumper or extension cord. A stringer is either a lamp socket cord that has the lamp sockets every few feet such as used in construction lighting or a receptacle stringer such as an orchestra stringer that has outlets every few feet. Sort of stringing along of a bunch of outlets be it lamp or receptacle - not a jumper.

    Lex has some awesome O' stringers but are not custom sized in spacing & can't do a lamp socket stringer. Just this past week saw a Euro totally molded flat cord screw base lamp socket stringer on the other hand that's rated for 15w but very compliant and rugged. Now searching for it's manufacturer and a supplier for it. Now that's a stringer and also code compliant given plugs or receptacles are not intended to be interconnection devices and the commonly used construction stringers are not filling the extra hard usage concept.
     
  7. ship

    ship Senior Team Emeritus Premium Member

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    Pre- made extension cords / jumpers are available thru any theatrical supply house on the other hand. Web search into them would lead to numerous sources.
     
  8. soundlight

    soundlight Well-Known Member

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    I believe that the OP mentioned stinger, not stringer. I usually think of a stinger as a quad-box cable (10 to 50 feet long 12/3 with a quad box on the end) for stage power, but I've heard shorter edison cables referred to as stingers as well.
     
  9. Edrick

    Edrick Well-Known Member Premium Member

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    Yup I was looking for a stinger not a stringer :). We refer to the extension cords we use with edition plugs at the end as stingers. Also could have multiple plugs at the end as mentioned.
     
  10. len

    len Well-Known Member

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    Although not lately for some reason, but I used to be able to find raw cable on ebay often. I also can get the ends fairly cheaply, but again not all the time. I found a vendor in Canada but he's out of stock on my preferred cable, which is 12/3 SJTW. I might have another source, but won't know until tomorrow.
     
  11. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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    Any cable using NEMA 5-15 ends (Edison, parallel-blade U-ground) WILL NOT be a 20A extension cord.

    You could buy Hubbell HBL5266C and HBL5269C (or equivalent Pass/Seymour, Leviton, or other approved manufacturer) and 25' of 12/3 SOOW cable and build them yourself.

    If you must have molded ends (which some prefer and are required in certain situations), search for the best price on "Elation EC-123-25". The cable is not SOOW, but is 12 gauge.

    In order to obtain a valid 20A rating, the 12 AWG/3-cond. cable must have NEMA 5-20 connectors, with the "neutral" blade turned 90°.

    The picture below (courtesy of ESP), shows a 20A Plug, and a Receptacle than can accept either 15A or 20A.
    [​IMG]

    The TV/Film lighting industry regularly installs 15A plugs on 2Kw fixtures, but that doesn't make it right, or in compliance with the NEC.
     
  12. Edrick

    Edrick Well-Known Member Premium Member

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    Based on what I've seen the Film Industry seems to not follow NEC Code they've got no issue pushing the limits of what the cable can handle.
     
  13. gafftapegreenia

    gafftapegreenia CBMod CB Mods

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    Another note on Stingers

    The quad j-box seen here, or any other j-box with punch outs, should NEVER be used on the end of an extension cord. These items are intended for permanent installation only, where the punch outs will not accidentally be removed, thus presenting a shock hazard. You will see this code broken all over the place, I am sure.

    [​IMG]
     
  14. cdub260

    cdub260 CBMod CB Mods

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    Check McMaster-Carr and Grainger. Both are industrial suppliers and ship most items overnight. This can be very handy on a tight schedule, though you end up paying more for shipping.
     
  15. SteveB

    SteveB Well-Known Member

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    FWIW, and understanding that the OP didn't specify usage in a theater, but in general, and if used on stage, SJ cable has limitations as to the conditions it can be used, generally (and if memory serves) not longer then 20ft as part of a multi-cable breakout, or when used as part of a 2-fer (I believe it's then limited to 18" long), and usually no usage on deck. SO is the only cable allowed on stages, especially on deck.

    Note that the goodbuyguys.com cable is all SJ.

    Steve B.
     
  16. TimMiller

    TimMiller Well-Known Member

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    i buy mine in town at bright star. They have great prices www.brightstarproductions.com
     
  17. jonliles

    jonliles Active Member Fight Leukemia

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    Guys-
    Typically Edison's are only rated for 15AMP - which equates to 1800Watts, even if it is 12/3 SO or SJO (both 20Amp rated) ?!? Stage pins are 20Amp, twist locks are 20Amp. Please double check the NEC code on this one before making any stinger / extension cord.

    Jon
     
  18. cdub260

    cdub260 CBMod CB Mods

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    There are a lot of different twist lock connectors out there. L5-20's are 20 amp, 120 volt connectors. Other designations have different amperage and voltage ratings.
     
  19. derekleffew

    derekleffew Resident Curmudgeon Senior Team Premium Member

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    See http://www.controlbooth.com/forums/glossarys/9299-twist-lock.html.

    As long as we are picking nits, Stage Pin Connectors come in 20A, 60A, and 100A varieties. Note that the 60A and 100A have a different wiring configuration than the 20A. See http://www.controlbooth.com/forums/glossarys/6599-stage-pin-connector.html.
     
  20. Edrick

    Edrick Well-Known Member Premium Member

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