According to the Canadian Electrical Code; no more than 12 items can be on any one circuit. If it is possible to calculate the load of each outlet, you may end up with a smaller number. Also certain items must have a dedicated circuit ie. refrigerator, microwave above a stove, etc.
A 30 amp circuit can safely support up to 4 outlets.
On a 20 amp circuit, it is safe to install up to 13 outlets that are rated for 15 amps each.
The National Electrical Code typically allows a maximum of 12 lighting outlets on a 15-amp branch circuit and 16 lighting outlets on a 20-amp branch circuit. However, these numbers can vary based on local code requirements, so it's important to check with your local authority having jurisdiction.
The National Electrical Code (NEC) does not specify a strict limit on the number of duplex outlets allowed per 20-amp circuit, but it does recommend that you consider the load. Generally, it's common practice to allow up to 10 outlets per 20-amp circuit if standard usage is expected. However, if high-wattage devices will be used, it may be prudent to limit the number of outlets to avoid overloading the circuit. Always consult local codes and regulations for specific requirements.
Up to 12 on a 20 amp circuit. Up to 9 on a 15 amp circuit. But use common sense. If the circuit will be heavily loaded, as in a home office, then do not install that many.
About 8 amps worth, if you derate the circuit for 100 percent duty cycle.
A GFCI can detect ground faults on the specific circuit it is connected to. If multiple outlets are on the same circuit protected by a single GFCI outlet, the GFCI can protect all of them. However, if the outlets are on different circuits or not downstream from the GFCI, they would need their own GFCI protection.
There isn't a formula, but the general rule is that you allow for 1 amp per outlet and you load the circuit to 80% of maximum. For a 15 Amp circuit you can have a maximum of 12 outlets.
Eight on a 15 amp circuit, tweleve on a 20 amp circuit, including the gfci receptacle itself.
It's not a problem so long as you use a 15 amp breaker. If you have any questions about electrical regulations in your area, contact the local building inspector or a local electrical contractor.
Two 20 Amp circuits with the outlets staggered so a different circuit is on two adjacent outlets. Should be GFCI protected.
A 15 amp circuit can handle approximately 1440 watts of power. To determine the number of plugs it can handle, divide the total wattage of the devices plugged in by 1440 to ensure that the circuit is not overloaded.