Generally, homes have eight to 10 outlets on a 15 amp breaker but not all are used at the same time. Lights and outlets are normally wired on separate branch circuits, which means that the lights will be protected by a separate circuit breaker to the one which protects the outlets.
For general use receptacles, In commercial buildings it is limited to 180VA per duplex or single receptacle, therefore on a 12/2 Romex cable not otherwise subject to ampacity derating and protected by a 20 amp circuit breaker, that would allow a maximum of 13 receptacles.
Table 210.21 (B)(3) also shows that a 15 amp receptacle can be installed on a 20 amp circuit that serves 2 or more receptacles.
Basic answer to your question of can a mixture of lights and receptacles be installed on a single circuit is yes.
When you need to wire multiple GFCI outlets such as in a kitchen or bathroom you have a couple of options. To save money, you can put in a single GFCI and then wire additional standard outlets to the “LOAD” output from the single GFCI. This provides the same protection as having a GFCI at each location.
Originally Answered: How far can you run 12 gauge wire on a 20 amp circuit? About 400 feet. After that voltage drop is a factor and the gauge will have to be increased or the voltage increased.
The amp capacity for 12 – gauge wires is 20 amps, and while you can technically use 14 – gauge wires on 20-amp circuits, it is not recommended.
If you’re wiring a circuit on which there are both lights and outlets, or you just aren’t sure which wire gauge to use, you can ‘t go wrong by choosing a 12 – gauge wire. It’s not quite as flexible as a 14- gauge wire, and it costs a bit more, but it’s always a safe choice on a 15- or 20-amp circuit.
Here the limit is 10 per 20 amp circuit.
You can not use 14 AWG anywhere on a circuit that has a 20A breaker. If you are putting 15 amp receptacles on a 20 amp circuit with 12 gauge wire, then you MUST use the screw terminals, not the back stab terminals. Just use the side terminals.
You can daisy – chain a GFI just like a regular receptacle, with one difference. The incoming wires must connect to the “line” terminals while the outgoing wires must connect to “load.”
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.
You can put up to 40 lights (based on 50 watt light) on a 20 amp breaker.
Some light fixtures, such as lamps and ceiling fan lights, use multiple bulbs and draw more power. Most circuits in a home allow for 15 to 20 amps, so you can safely connect 1400 to 2400 watts of lighting on one light switch. That’s enough for 23 to 40 60-watt bulbs or 280 to 480 5-watt LEDs.
for both 15A and 20A circuits the rule of thumb is a maximum of 10 receptacles per circuit. 15 amp breaker circuit 14/2 wire. Some say to limited total number of outlets to 10, meaning the total number of consistent in-use outlets, correct?