Combined more than 12 lights and plugs per circuit with load current doesn’t exceed 80%

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Posted by: from Oshawa
2/11/2021 at 11:45:35 AM

Can following pass Ontario electric inspection on single 15A circuit break?

- 29 pot lights, 9 watt each

- 1 strip led, 15 watt

- bath fan, 72 watts

- 6 plugs

Known current is 28x9+15+72=329 watts, 6 plugs x 1.5A (rule of thumb) x 120V => 1080 watts. Total wattage is 1419 which is less than 1440 (15A*0.8*120).

If above is ok, can I add an additional GFCI receptacle on same break?

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Leon from Protech Electric in markham
Date/Time2/11/2021 at 1:02:45 PM

Yes, I think so.

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Date/Time2/13/2021 at 7:11:28 AM

Short answer NO. When you add plugs you go back to 12, plugs are a unknown load.

To be sure, code may have changed,ask esa, the inspector has the last word.

Hope this helps,

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Date/Time3/3/2021 at 9:06:49 AM

The answer is no. As soon as you add one receptacle on the circuit you are limited to 12 devices in total.


John Kuehnl-Cadwell, CD, ME

Master Electrician

Datawise Solutions Inc

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