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Results tagged with electrical
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user 47125
Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so you need to provide your location in your question or profile to ensure you get answers that are relevant to you. Posting photographs of wiring junctions or drawing a wiring diagram and posting it is also highly recommended.
2
votes
What is the cause of this voltage difference between my breaker panel and AC unit?
Conduit is a perfectly acceptable grounding path
EMT conduit is a valid grounding method. I would be surprised to see a ground wire inside EMT - nothing wrong with it, just would be "belt AND suspend …
2
votes
Feeding 125 sub-panel from 200 amp main
Option A is necessary if your present panel is Zinsco or FPE Stablok, but we can do that in a sneaky way that isn't so impactful. Otherwise, option C.
Option A-1 is to install a replacement panel rig …
3
votes
Not sure how to change these lightbulbs. What is this lighting system?
What is this “bulb” of which you speak? :)
The “multiple color temperature” switch indicates this is LED lighting.
LED is a semiconductor technology for making light.
Like most semiconductors, they a …
0
votes
convert 220v range outlet to 110v standard
Maybe. It depends on what the existing wires look like. You can’t take it for granted.
1
vote
Can a MWBC ever be on 2 breakers?
I suspect the handle-tie requirement came along either in the late 90s or the 00s. Back in 1994 they were still allowing 3-prong range and dryer connections to be built (though, not with NM nor UF ca …
2
votes
Low voltage wiring clamp for junction box
NEC 110.2 requires every piece of electrical equipment be approved by the AHJ. In practice, AHJs don't want to be running testing labs, so they defer to UL and the other NRTLs. …
1
vote
400 Amp service to 225 amp and 150 amp panels
Electrical drownings are serious, and dockside is where that happens the most. …
2
votes
How is bulb affecting power feeding light fixture?
That tester is designed only to be used with both test leads on wires. All your measurements taken with one lead floating in air, are improper use of the device, which means the measurements are mean …
2
votes
Can I convert an old dual fuel Electric/Propane range into a cooktop only that uses 120V ins...
The vast majority of dryers and ranges are wired with all of the 120V crud wired between one of the 240V legs and neutral.
The other 120V leg is used only for the 240V large heating elements.
So... if …
2
votes
Can you use a 50 A GFI spa box on a 40 A circuit?
Yes, that’s totally fine.
Because the spa box is downline of a 40A breaker, it could be a 400A spa box for all it matters; it won’t be able to draw more than 40A.
I bet your car has 112 mph tires. Th …
4
votes
Using 12/3 as 12/2?
You don't even need to change the breaker. You can just disconnect the red wire at both ends and done.
You're allowed to use half of a 2-pole breaker as a 1-pole breaker. It'll work fine.
There are …
5
votes
What is the failure mode of making an adapter to convert a 240 V outlet to 120 V
You can't just slap up a subpanel anytime you want to split a 240V plug. However, with a NEMA 14, you can -- because it has all the right wires to feed a subpanel.
So, that's it. You convert the 6/3 …
1
vote
Bathroom circuits code
Yes, bathroom lighting and other hardwired loads are always allowed to be on other, non-bathroom circuits, except for these particular ones:
Not Kitchen countertop circuits, since they must be dedica …
1
vote
Accepted
Can I use both a grounded 120V circuit and 2 wire + ground 240V circuit for 3 wire + ground ...
No, you can't combine the two circuits because of NEC 300.3(B). (funny I was just answering another question about that one). It says all related wires must be together in the same cable. But also, …
8
votes
What happens if the neutral is switched rather than the hot wire for a light?
What you're describing - switching the neutral - is a good way to get someone hurt. Code is to switch the hot, so that if the switch is off, you can service the light safely. And on older lights, par …