Question about AFCI and Ontario code as well as some other general wiring queries
I'm hoping someone can clear up some confusion about AFCI requirements in Ontario. I'm finishing my basement which will include one "bedroom", a main open area, bathroom, cold room, laundry room and mechanical (last two are combined). My questions are as follows:
Another (maybe dumb) question, can junction boxes be installed in joist bays (which will be covered up by drywall later)? I assume they can but I do recall reading somewhere that junction boxes cannot be "hidden". Any comments on this?
Lastly (for now at least), could someone perhaps comment on my general assumptions and things I've done:
Thanks a lot for any feedback.
In most places I know, junction boxes cannot be hidden. Even if they by code could be, why would you want to, if you were to ever have a problem with the circuit not working then you wouldn't have to tear things apart to get at the junction box to see if it was the problem.
They do make solid face plates to cover the box, and some decorative ones too.
According to the electrical code only the plugs in the bedroom need the arc fault. Ontario may go above and beyond that.
Your plan sounds good, you said you were putting 10 devices on each circuit which is fine but just remember the max is 12.
The other thing people always miss is the smoke detector, you need one near the bedroom and it has to be interconnected with any other smoke detectors in the house.
Before you put in an AFCI make some measurements to see that it won't trip the minute that it is installed.
This includes seeing current in the ground wires due to RFI filters in appliances or for other reasons
return current in the neutral being different than the current in the hot lead.
If you have dimmers or speed controls or home automation circuitry you may also get nuisance trips.
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home depot sells a little handbook for $9 that has all the rules for residential in one handy little place. Translated from lawyer to english by inspectors. Based on the ontario code. If your more than just a once a year DIY'er i strongly recomend having it....well worth the price.
Bedroom receptacles are required to AFCI. Lighting is not required to be AFCI but it can be if you wish. Smokes must NOT be AFCI.
All receptacles are now required to be tamper proof.
You can not bury a junction box above a dry wall ceiling unless you install a hatch to get access to it.
Light MUST be on 15 amp circuits.
Maximum 12 outlets ( lights & receptacles) on a circuit.
Laundry room must be a separate circuit for laundry room only.
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