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10
votes
1answer
420 views

What are “termination points” and why do I need them on my electrical supply?

An inspection of my electric supply service on the outside of my home in Maryland said I need 3 termination points and two grounding rods. The grounding rods I can get but I have no clue about these ...
3
votes
1answer
1k views

What is a bus bar in an electrical switch board?

I am doing some research in electrical wiring and mains switch boards and was wondering what a bus bar is and what it does?
3
votes
1answer
224 views

Unused electrical duplex box, soon to be hidden behind a bookcase?

I'm getting ready to install bookcases for my home office (SouthWest USA). One wall floor to ceiling consisting of four units screwed together. In one place there is a duplex outlet right behind the ...
2
votes
1answer
62 views

Main breaker on load center won't open

I was in the process of connecting a Reliance generator trow over switch , although the job was completed , I was trying to shut off power to the entire house by opening the main breaker but would not ...
2
votes
1answer
140 views

Does the circuit providing a light at the electrical panel have to be ONLY for that light?

Does the circuit providing a light at the electrical panel have to be ONLY for that light? I'm fairly sure there specifically has to be a light at the panel, as well as a circuit with an accessible ...
1
vote
3answers
282 views

How many lighting circuits are needed in the LED era…? (US - NEC)

This is in a two story, ~1000square foot per floor building. With the advent of affordable, decent (IMHO) LED fixtures (finally!) the entire lighting load for the structure looks to be 500W - 1000W at ...
0
votes
4answers
73 views

Should a neutral wire ever be connected to the neutral for the power meter?

I was not working with this circuit breaker box but I was interested to see what was going on with only 3 breakers for the entire apartment. I found a neutral from the apartment going into the ...
0
votes
1answer
480 views

How can I connect a 120V compressor to a 3 phase WYE 208 electrical system?

I have 4 cables from a power supply which are 3 phase WYE 208 volt. so if I measure between neutral and hot I get 120V. The problem is that I need to hook up a compressor for 110V single phase (just ...
0
votes
0answers
57 views

Terrarium electric board

[hope this isn't off topic for this board] I'm doing a DIY electric board for my terrarium: in case something goes wrong at least the whole electric circuit won't switch off. My current setup is a ...
0
votes
0answers
114 views

Live wire running through entire apartment wall?

I'm currently renting an apartment and my spouse and I want to hang a metal fixture above the wall where our bed is (in lieu of a headboard...for now at least). Where I want to hang it is 4 feet above ...
0
votes
0answers
23 views

wifi thermostat [duplicate]

I purched a honeywell RTH8580WF thermostat i dont have a C terminal in my older lennox furnace i have R W T G T i have an extra wire not being used so i hooked up my thermostat the way it says but ...