Question about Your One Source Square D #QO120CAFIC QO20A Arc Fault Breaker
The National Electric Code (NEC) does not directly state the number of outlets per general purpose circuit for a residence. They only state that "x" amount of sq. ft. must have "y" amount of circuits and that they be evenly distributed. The number of outlets is then limited by physical outlet spacing rules.
However, a rule of thumb is the points system. A 20 amp circuit is 20 points. A regular duplex receptacle is 2 points and a light is 1 point. You can have any combination of receptacles and lights that add up to 20 points. For example, 10 duplex receptacles x 2 points = 20 points. Or, (8 duplex receptacles x 2 points = 16) + (4 lights x 1 point) = 20 total.
The concept is the same for a 15 amp circuit except the total points will then be 15.
So, the answer is about 10 receptacle outlets per 20 amp circuit. In a pinch, you can stretch that to 12 or so and still be OK.
Posted on Nov 13, 2010
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Posted on Jan 02, 2017
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Dec 04, 2015 | Washing Machines
Either you have defected (weak) circuit breaker and wiring or bad Microwave oven.
The 99.99 % house hold Microwave ovens pull less than 15 Amps. They may have internal ceramic 15A fuse or 15 Amp internal circuit breaker.
To isolate your problem:
Plug your Microwave oven to different areas (different electrical circuit) if the different circuit breaker still trips... your Microwave oven has a short - Most of them has a small ceramic fuse 15 amps fuse.-also check some inter lock switches at door .
If the Microwave oven works Ok then you may have:
2a. You may overload the existing electrical circuit, try to unplug some other appliances
2b. You may have bad electrical outlet receptacle (Replace it with the same type , - may need helps from licensed electrician)
2c. Weak or defect house hold circuit breaker. (Replace it with the same type , brand - may need helps from licensed electrician)
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