New answers tagged junction-box
2
votes
50 Amp plug but 30 amp breaker
This is a common mistake that I admit I have answered incorrectly in the past.
There is a table in the 2020 NEC (See note below):
It's easy to quickly say "that's the rule, we're done here",...
- 15.7k
0
votes
50 Amp plug but 30 amp breaker
If you are putting in a 50 amp outlet, you should put in a 40 or 50 amp circuit. 'Why is 40 a possibility?' you may ask. It's possible to use a 40 amp circuit on a 50 amp outlet because there is no ...
- 7,458
4
votes
Can you wire something in parallel to a light switch?
One quite common "gotcha" is that the switch may not have a complete power connection for you to splice to. If the switch was installed at a time or in an area where NEC 2011 did not (or ...
- 191k
3
votes
Accepted
What is the right box fill for my 1x30A circuit and 2x20A circuit case?
The shared ground needs to be #10 since one circuit has wire rated for 21-60 amps.
For a 30A circuit, #10 conductors will suffice unless it is aluminum.
Wires which pass thru a box only count as 1 ...
1
vote
What is the right box fill for my 1x30A circuit and 2x20A circuit case?
You have:
3 #8 conductors passing through the box.
8 #12 conductors entering the box and spliced there.
1 #12 ground wire.
For which my calculator says you need a 29.3 CI box.
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2
votes
Which small (1-gang) surface mount box is code compliant with NEMA 14-30R receptacle?
A frame challenge:
Your linked "Carlon" box is a surface mount box. What about replacing both box and insert with a surface-mount 14-30 outlet?
https://www.homedepot.com/p/ELEGRP-30-Amp-125-...
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3
votes
Accepted
Which small (1-gang) surface mount box is code compliant with NEMA 14-30R receptacle?
The links you posted include dimensions, and based on those it doesn't seem like it would fit. The outer metal frame seems too big for the box.
Receptacle: 2.46" W x 3.69" H x 2.26" D (...
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3
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Which small (1-gang) surface mount box is code compliant with NEMA 14-30R receptacle?
Will that box work? I guess it probably would. But use a metal box instead. See this post for some reasons why.
Typical is to use a 4" box and a cover such as this one from Home Depot:
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