While on the subject of OCPD code...

[danTt]

Was pondering this one earlier..

Does an L21-30 to 3x L5-30 breakout assembly require a single pole breaker for each l5-30? or is the upstream 3-pole breaker feeding the L21-30 enough? It would seem like it should be, but given how rare common sense is I'm probably missing something

 

[STEVETERRY]

Was pondering this one earlier..

Does an L21-30 to 3x L5-30 breakout assembly require a single pole breaker for each l5-30? or is the upstream 3-pole breaker feeding the L21-30 enough? It would seem like it should be, but given how rare common sense is I'm probably missing something

Since, by Code, it needs to be a common-trip 3 pole breaker, that adapter is OK being fed by it.

ST

 

[danTt]

Thanks! Appreciate the time you take to share knowledge on the random questions this forum tends to spawn...

 

[derekleffew]

This?

https://www.pduwhips.com/products/1259-l21-30p-to-l5-30r-splitter-power-cables.aspx

 

[danTt]

This?

https://www.pduwhips.com/products/1259-l21-30p-to-l5-30r-splitter-power-cables.aspx

Yeah... thats the thing. I saw that, but I've seen lots of things on the internet that code has opinions about I'm curious how they get all three neutral and ground wires into the 21-30 terminals, would expect it to need to be something like a molded twofer.

 

[derekleffew]

I'm curious how they get all three neutral and ground wires into the 21-30 terminals,

They kind of address that on the page, by way of apology/explanation for #12 on a 30A:

Tech Notes: 12 AWG wire is the maximum x3 that can be terminated into the L21-30P plug.

 

[JD]

Kind of wonder about that 12/3 SJ on 30 amps thing... Also, compression of the strain relief on that L21-30P which would be designed to clamp down on a chunk of 10/5 S.
The do indicate it is limited to 20 amps, but....

 

[STEVETERRY]

Yeah... thats the thing. I saw that, but I've seen lots of things on the internet that code has opinions about I'm curious how they get all three neutral and ground wires into the 21-30 terminals, would expect it to need to be something like a molded twofer.

Very good point. It sure doesn't look like it's wired with #10AWG. No way three #10's are going into that neutral terminal. Oh wait, I just read post #6.

This NEC wording is germane to this non-compliant device:

520.2 Definitions.
Adapter. A device used to adapt a circuit from one configuration
of an attachment plug or receptacle to another configuration
with the same current rating.

The we have 520.68(B):

(B) Conductor Ampacity. The ampacity of conductors shall be
as given in 400.5, except multiconductor, listed, extra-hard
usage portable cords that are not in direct contact with equipment
containing heat-producing elements shall be permitted
to have their ampacity determined by Table 520.44(C)(3).
Maximum load current in any conductor with an ampacity
determined by Table 520.44(C)(3) shall not exceed the values
in Table 520.44(C)(3). Where the ampacity adjustment factors
of Table 520.44(C)(3)(a) are applied for more than three
current-carrying conductors in a portable cord, the load diversity
shall be 50 percent or less.

And then we have 520.69 (A):

520.69 Adapters. Adapters, two-fers, and other single- and
multiple-circuit outlet devices shall comply with 520.69(A), (B),
and (C).

(A) No Reduction in Current Rating. Each receptacle and its
corresponding cable shall have the same current and voltage
rating as the plug supplying it. It shall not be utilized in a stage
circuit with a greater current rating.



ST