Wiring in Basement


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Old 07-24-14, 04:26 AM
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Wiring in Basement

My basement has only one outlet. I hope to finish it in the future and add several more outlets for lighting and general use (a bathroom, bedroom, game room). Question - my main breaker is in the garage. Would I need to install a sub panel in the basement or simply use a junction box?
 
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Old 07-24-14, 04:32 AM
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It depends on how many circuits you need and distance. Do you just need more receptacles? What loads will you have? What would the purpose of the junction box be? Normally you would just run a cable to the first device or fixture of the circuit and feed other devices and fixtures on the circuit from there.

Assumes garage is attached.
 
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Old 07-24-14, 05:26 AM
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It's just a need for additional outlets - say 10, 120v. If I have 10 additional outlets feeding off the one existing outlet, would that cause the main breaker to trip? I have experienced that now with the one while having a TV, lamp and treadmill plugged in. It's not often but has tripped. I'd also like to relocate a freezer into the basement. Or maybe I just need a larger circuit in the main breaker?
 
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Old 07-24-14, 06:23 AM
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If I have 10 additional outlets feeding off the one existing outlet, would that cause the main breaker to trip?
Even a hundred wouldn't. It all depends on actual load at any given time. Is there any thing else on the circuit? Best to have lights on another circuit.
maybe I just need a larger circuit
Size of circuit for general purpose receptacles is limited to 20 amps. Your basement circuit is probably already 20 amps. Some would put the freezer on a dedicated circuit.

Code note: U.S. code does not limit the number of receptacles. Canadian code does.
 
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Old 07-24-14, 07:24 AM
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would that cause the main breaker to trip?
I doubt you really mean the main breaker tripped. The main breaker is probably either a 100 or 200 amp breaker that controls power to the entire main service panel that you say is in your garage. I think you meant that the branch circuit breaker tripped which could be either 15 or 20 amps.
 
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Old 07-24-14, 10:11 AM
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As Ray stated, it all depends on what you're planning on doing in your basement. For my kind of basement, I'd probably run 2 circuits for receptacles and one for lighting. I would run all 3 back to the main panel, since in my opinion it's easier/cheaper to run 3 cables back to the main panel than hassling with a sub panel.

Do you plan on any larger loads? Electric heater? Treadmill? Fridge/freezer?
 
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Old 07-24-14, 01:03 PM
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The bathroom receptacle should be served by an 20 amp circuit. Depending on the layout and usage one or more circuits may be needed for the other parts of the basement. The existing load on the circuit matters also.
 
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Old 07-24-14, 02:12 PM
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Do you plan on any larger loads? Electric heater? Treadmill? Fridge/freezer?
The OP said he had a treadmill in his basement now and wanted to relocate a freezer there and put in a bathroom too. I see about 3 dedicated circuits plus lighting and general receptacle circuits if it was my project I'd recommend a small subpanel, a 8-16 or 12-24 MLO panel can be purchased for around $25.
 
 

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