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Old 08-18-2011, 05:03 PM   #1
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Basement workshop wiring questions


I'm building a workshop in the basement and have some questions on proper wiring techniques.

1. Given the concrete floor, do basement outlets in general need to be GFI protected, like those in the garage?

2. I've put a switched duplex outlet in the ceiling, nailed to the joists, where I'll plug in some fluorescent lights. Do these outlets in the ceiling need to be GFI protected?

3. If I continue the switched power from the duplex above to some additional light fixtures, can I put a separate switch on those lights? This would put two switches in series; the second switch will only work if the first switch is on. Will this meet code?

4. I plan to nail 2x4's to the solid concrete wall and then hang duplex outlets on them. What kind of box should I use to meet code? Does the wire go on the side of the 2x4 or down the front surface?

Thanks

Ray

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Old 08-18-2011, 05:11 PM   #2
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Basement workshop wiring questions


if you wire lights in series, you know that the voltage will be split between them right? and you mentioned flourescents....I believe the ballast need 120v to work but not 100% sure.

As for the receptacles..where are you located? i believe the rules are different in the US and Canada.


Edit: my mistake..you said switches in series, not lights.

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Old 08-18-2011, 05:16 PM   #3
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Basement workshop wiring questions


Receptacles in an unfinished basement require GFI protection.
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Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 08-18-2011, 10:50 PM   #4
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Basement workshop wiring questions


Quote:
Originally Posted by RCharles View Post
I'm building a workshop in the basement and have some questions on proper wiring techniques.

1. Given the concrete floor, do basement outlets in general need to be GFI protected, like those in the garage?

Yes.

2. I've put a switched duplex outlet in the ceiling, nailed to the joists, where I'll plug in some fluorescent lights. Do these outlets in the ceiling need to be GFI protected?

Yes, they do. And considering the propensity of metal light fixtures to develop ground faults, it's a darn good idea too.


3. If I continue the switched power from the duplex above to some additional light fixtures, can I put a separate switch on those lights? This would put two switches in series; the second switch will only work if the first switch is on. Will this meet code?

Yes, you can do this - but it's really annoying. Why not run 3-conductor cable, and continue the circuit using the extra conductor as an unswitched hot? You could then make the receptacle half-switched if you wanted.

4. I plan to nail 2x4's to the solid concrete wall and then hang duplex outlets on them. What kind of box should I use to meet code? Does the wire go on the side of the 2x4 or down the front surface?

Why not use MC cable anchored to the wall, and nail metal boxes directly to the wall? It's less work and a cleaner installation. You can also run EMT down the wall and use it as a sleeve for NM cable. If you really want to use wood furring, run the NM down the side. This may not qualify as "protection from damage" though, in which case it's not code compliant. That's a judgment call.

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