DIY Home Improvement, Remodeling & Repair Forum > outlet question

02-13-2010, 01:48 PM
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outlet question

Is there a rule of thumb on how many outlets that are occasionally used on a 15 amp circuit. EX: used for vacuming, blowdrying drop light etc

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02-13-2010, 02:06 PM
Wuzzat?
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"If following the National Electric Code (NEC) - most commonly used in USA
there is no distinct limit to the number of outlets. You must calculate load in accordance with Article 220 and you must determine the largest motor load anticipated. "

I've heard 10 to 15 outlets as a practical limit.

A hair dryer by itself will take up to ~15A.

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Last edited by Wuzzat?; 02-13-2010 at 03:49 PM.

02-14-2010, 10:17 PM
fluxcapacitor
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in CEC (canada) the max is 12 on one circuit if connected loads are unknown. If you know exactly what you are plugging in, you may exceed 12 as long as the connected load do not exceed 80% of the rating of breaker. I think 12 is a good rule of thumb.

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02-15-2010, 08:13 AM
ohmy
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Generally 8 - 12 for branch circuits in residential is a good rule of thumb.

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02-15-2010, 07:46 PM
kok328
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But then they invented the power strip making these rules of thumb obsolete.

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02-15-2010, 10:14 PM
fluxcapacitor
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at least unplugging a power strip is an easy fix.

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02-15-2010, 11:03 PM
the_duke
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so if 8-12 is the rule of thumb, and you put an outlet on every wall of a 4 sided room, does that mean each breaker should do 2-3 bedrooms? i'm about to redo the electrical in my house and was thinking about doing 1 breaker for each bedroom, due to modern technology (alarm clocks, tv's, dvd players, cell phone chargers, ipod dock stations, etc). is that going overboard or do you think that's a good idea?

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02-16-2010, 07:56 AM
travelover
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Quote:
 Originally Posted by the_duke so if 8-12 is the rule of thumb, and you put an outlet on every wall of a 4 sided room, does that mean each breaker should do 2-3 bedrooms? i'm about to redo the electrical in my house and was thinking about doing 1 breaker for each bedroom, due to modern technology (alarm clocks, tv's, dvd players, cell phone chargers, ipod dock stations, etc). is that going overboard or do you think that's a good idea?
Having rooms on separate breakers is nearly always a good idea. The items you noted don't really draw much power, but it is a convenience not to have a corner of your house in total darkness when a circuit breaker pops. If for some reason you needed to run an electric heater in the rooms, you have reserve power to do so with separate circuits.
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02-16-2010, 02:30 PM
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Thanks for the information. I had planned on doing each room on a separate breaker. Is it ok to have the bedroom lights on the same circuit as the outlets or should I common the 3 bedroom lights on their own circuit?

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02-16-2010, 04:20 PM
Wuzzat?
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My house seems to have each room on two or more separate breakers so you're not left without power in each room.

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