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Old 09-03-2015, 01:19 AM   #1
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bedroom wiring


Have two bedrooms adjoining each other. Each bedroom would have approx 4 outlets. One ceiling fan/light in the one bedroom. The other room would have two recessed lights. No ac unit currently but may install later. Trying to decide how to wire the rooms. One 20 amp circuit for the receptacles in both rooms and one 15 amp circuit for the fan and lights? Or if each room had an ac unit run 2 20 amp separate circuits? A/C around 12 amps leaves minimum 4 amps for the other receptacles in each room. Use 3 20 amp circuits and have the lights/ fan circuit connected to one receptacle for the ac in one room an the other ac in the other room connected to the other 20 amp circuit? Thanks for any advice.

Last edited by gt1935; 09-03-2015 at 01:24 AM.
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Old 09-03-2015, 09:23 AM   #2
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one 20 amp should be fine for all the plugs and lights in both rooms, even a 15 would probably be fine, unless you plan on using something heavy duty like a space heater,

run a dedicated line/circuit for each a/c unit
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Old 09-04-2015, 09:31 AM   #3
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OK, I will be the one to ask: is the project being done under a permit?

For what reason are you wiring two bedrooms? Is this an addition? Are you rehabbing these two bedrooms?

It's one thing to add wiring you may need in the future (for the ACs) if the walls are open, but another to add it if you are fishing wires through closed walls.

You could probably get everything on one 15A cicuit if it serves only these two bedrooms.

Don't forget tamper resistant outlets and AFCI breakers.

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Old 09-04-2015, 06:35 PM   #4
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I'd do a 20 amp circuit for each bedroom, including the a/c unit. The lights should have their own circuit so they do not dim when the a/c compressor kicks on.
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Old 09-05-2015, 07:39 AM   #5
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Quote:
Originally Posted by Syberia View Post
I'd do a 20 amp circuit for each bedroom, including the a/c unit. The lights should have their own circuit so they do not dim when the a/c compressor kicks on.
Even with the lights on the same 20A circuit, with such a small load the lights will almost certainly not dim due to this one circuit.
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Old 09-05-2015, 07:44 AM   #6
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Quote:
Originally Posted by gt1935 View Post
Have two bedrooms adjoining each other. Each bedroom would have approx 4 outlets. One ceiling fan/light in the one bedroom. The other room would have two recessed lights. No ac unit currently but may install later. Trying to decide how to wire the rooms. One 20 amp circuit for the receptacles in both rooms and one 15 amp circuit for the fan and lights? Or if each room had an ac unit run 2 20 amp separate circuits? A/C around 12 amps leaves minimum 4 amps for the other receptacles in each room. Use 3 20 amp circuits and have the lights/ fan circuit connected to one receptacle for the ac in one room an the other ac in the other room connected to the other 20 amp circuit? Thanks for any advice.
First off, a newer A/C that is a 12A draw is in the 12-15K BTU range. That is HUGE for an average bedroom.
More likely you will have a 6-8K BTU for a BR.
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Old 09-06-2015, 01:14 AM   #7
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I have an 8k in my office. Right on the nameplate on the compressor, the LRA (start-up load) is listed as 35 amps. That will dim lights on a 20A circuit.
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