How Many Light Fixtures Can Be On One Circuit

Ontario electrical code says max of 12 receptacles or lights on a circuit.

How many light fixtures can be on one circuit. Let s say you have 8 50 watt lights on the circuit that roughly 400 watts of draw roughly. Circuit is dedicated to just the lighting. You can put up to 40 lights based on 50 watt light on a 20 amp breaker. You must use 12 gauge wire to connect 20 amp circuits.

You should have no problem supplying 8 light fixtures from a single 120 volt 15 ampere circuit unless the fixtures have four or five bulbs each. As long as the combined maximum amperage rating of all the fixtures combined doesn t exceed the circuit breaker rating you can install as many fixtures as you want. Flameport 21 jul 2013 6. They are grossly overpowered and in more than 99 of installations are totally unnecessary.

50 watt light equals less than 1 2 amp current flow at 120 volts. But it should be noted that this is calculated assuming that only light bulbs are connected to the circuit and no other device is connected. If the lights will be used less than three hours at a time you could install 16 fixtures on the circuit. Plan to use ultra thin led pot lights not cans for arguments sake lets say each light consumes 15w most likely lower theoretically i can safely power 96 of these lights i need a max of 26.

For 100 watt fixtures you can have a maximum of 12 divided by 0 9a or 13 fixtures. Your conclusion that 16 lights will not overload a single circuit is also correct. 10 lights per circuit was correct back in the day but as no one has 100w lamps any more the actual number is generally far more than that. Usually they are rated as a of efficiency to the lamps being driven.

It s then just a matter of adding up what is on the circuit. Now turn off all the breakers except for the one the light are on and see how many lights and outlets are powered by the circuit. You can put up to 30 lights based on 50 watt light on a 15 amp breaker. To figure out how many lights can be installed on one circuit breaker you have to know the following.

One rule of thumb is to assign a maximum draw of 1 5 amps to each receptacle which allows for 10 receptacles on a 20 amp circuit. If you want more light in your garage you can install additional lights on an existing circuit. For more details contact us at email.