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What is the Minimum branch circuit wire size in a dwelling?
The minimum size home wiring is #14 AWG, the rating for that size wire is 15 amps.
A 20-ampere branch-circuit shall not serve a single appliance with a rating greater than?
nec article 422.11[e]
What is the minimum branch-circuit wire size installed in a dwelling?
The minimum size home wiring is #14 AWG, the rating for that size wire is 15 amps.
A branch circuit rated at 20 amperes supplies four receptacles . According to NEC the rating of the receptacles must not be less than blank amperes.?
20 amperes.
What is power rating of appliances?
Wattage = voltage x amperage. Every appliance in North America is built to work at 120 V, so you have the voltage. The amperage rating is probably written in the microwaves manual if the wattage is not. Remember the amperage you put on a circuit can't be more that 80% of what the wiring is rated for in the branch circuit.
Are there any cases where the load can exceed the branch circuit ampere rating?
No Article 210 in the NEC
Does the code permit the ampacity of switch legs to be less than the ampere rating of the branch circuit?
No, and here's why: the rating of the branch, determined by the overcurrent protection, is designed for the ampacity of the branch conductors so that they breaker trips before the conductors heat up enough to start a fire. If you put in smaller wires on the same branch, they will get MUCH hotter before the circuit breaker trips, if it ever does. For example, a 20A branch, protecting 12AWG wiring; add some 14 AWG rated for 15A. Something faults the switched leg at 18A; enough to burn out the wiring but not enough to trip the breaker. House burns down, insurance doesn't pay because of "faulty wiring" installed negligently by a person without proper training and credentials.
How is the required number of branch circuit determined?
depend on the feature of any amplication or extension of the system applications
DoesCode permit connecting receptacles to a 20ampere branch circuit using short lengths of 14AWG conductors as the pigtail between the receptacle terminals and the 12AWG branch-circuit conductors?
No. This practice is a violation of Article 210.19 (A) of the NEC. "Conductors of branch circuits supplying more than one receptacle for cord-and-plug-connected portable loads shall have an ampacity of not less than the rating of the branch circuit."
What is the Minimum branch circuit wire size in a dwelling?
The minimum size home wiring is #14 AWG, the rating for that size wire is 15 amps.
A 20-ampere branch-circuit shall not serve a single appliance with a rating greater than?
nec article 422.11[e]
The viscosity rating of lubricant is determined by its?
SAE rating
Can different rating circuit breakers have the same short circuit characteristics?
Yes, different amperage rating circuit breakers can have the same short circuit characteristics.
What is the minimum branch-circuit wire size installed in a dwelling?
The minimum size home wiring is #14 AWG, the rating for that size wire is 15 amps.
What is the maximum cannot exceed total amperage allowed on a 20 amp 120 V circuit?
The total allowable load in amps on a branch circuit by Code is 80 per cent of the circuit rating. Therefore, a 20 amp circuit shouldn't be loaded over 16 amps total.
A branch circuit rated at 20 amperes supplies four receptacles . According to NEC the rating of the receptacles must not be less than blank amperes.?
20 amperes.
What is power rating of appliances?
Wattage = voltage x amperage. Every appliance in North America is built to work at 120 V, so you have the voltage. The amperage rating is probably written in the microwaves manual if the wattage is not. Remember the amperage you put on a circuit can't be more that 80% of what the wiring is rated for in the branch circuit.
