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Yes, a #8 wire is rated at 45 amps. One of the duties of a breaker is to protect the wire from over current. A 30 amp breaker will trip before reaching 45 amps so the wire will never get close to its rating.
A breaker is used to protect the conductor that is connected to it. A #14 copper conductor with an insulation factor of 90 degrees C is rated at 15 amps. So you see in this situation, the breaker is too large to protect the size of wire that you stated.
There is one occasion where the breaker can be larger than the wire size capacity. That is on motor load connections. A motor on start up can draw 300% of its nameplate amperage rating. To stop needless tripping every time the motor start, the electrical code allows a breaker to be rated at 250 % of the motors name plate rating..
For example if a motor draws 10 amp running current, the proper size breaker will be 10 x 250% = 25 amps. As there is no wire rated for 25 amps the next largest size would be #10. A #10 copper conductor with an insulation factor of 90 degrees C is rated at 30 amps.
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Can you put 20amp breaker on 10-2 wire?
No, you should match the breaker size to the wire gauge. A 10-2 wire is typically rated for a 30 amp breaker. Using a 20 amp breaker on 10-2 wire could result in overheating and a potential fire hazard.
Can you run 8 gauge wire on a 50 amp breaker?
No, you should not run 8 gauge wire on a 50 amp breaker. The wire size should be compatible with the amperage rating of the breaker to ensure safety and prevent overheating. For a 50 amp breaker, you should use a minimum of 6 gauge wire.
How big of breaker do you use for 115 volt?
Depends on the wire size used in the circuit. If you use AWG # 14 wire you must use a 15 amp breaker. If it is wired with AWG # 12 wire then you use a 20 amp breaker. If a AWG # 10 wire is used then a 30 amp breaker is required. The breaker protects the wiring from overheating so you must use the proper size breaker for the wire used.
Can a circuit breaker be tripped by using 20 amp sockets instead of 15 amp sockets?
A circuit breaker protects the wires that the devices are connected to. If the devices that are connected to the circuit are 20 amps the wire size should be #12 wire fed from a 20 amp breaker. This breaker should not trip unless the circuit is overloaded or a fault occurs on the circuit. If the devices that are connected to the circuit are15 amps the wire size should be #14 wire fed from a15 amp breaker. This breaker should not trip unless the circuit is overloaded or a fault occurs on the circuit. Putting 20 amp sockets on this 15 amp circuit will work but the circuit is limited to the amount of load that can be plugged in. You will not get the full capacity of the 20 socket because the breaker will trip at 15 amps.
What is the wire size for a 35 amp breaker to a ac unit?
You will need to use #8 wire.
What size breaker should you use for a tnia-10 wire?
25 amp breaker
What size breaker should be used on a 20 amp motor?
30 amp breaker with #10 gauge copper wire
What size amp circuit breaker should be used for 110 outlet?
The size breaker you use is determined by the size wire used in the circuit. If you use AWG #12/2 wire then use a 20 amp breaker. If you use AWG # 14/2 then use a 15 amp breaker.
What size breaker should be used for a double oven?
50 amp breaker wired with AWG # 6 wire.
Should 25 amps breaker be replaced by 20 amps?
For typical residential house wiring 12 AWG wire is required for a 20 Amp breaker. If you change out the breaker for a 25 A breaker you would have to rewire the circuit with 10 AWG. In that case you could up the breaker to 30 Amps. All outlets and switches should be rated at the same voltage and current as the breaker.
What size breaker should be used with ceiling fans?
Use 15 amp breaker with 14 gage wire or 20 amp breaker with 12 gage wire. Either way will work just fine.
What size breaker can you use on a 7500watt generator?
Depends on the wire size you are using. If the generator breaker is a 30 amp then install a 30 amp breaker.
Can you put 20amp breaker on 10-2 wire?
No, you should match the breaker size to the wire gauge. A 10-2 wire is typically rated for a 30 amp breaker. Using a 20 amp breaker on 10-2 wire could result in overheating and a potential fire hazard.
Can you run 8 gauge wire on a 50 amp breaker?
No, you should not run 8 gauge wire on a 50 amp breaker. The wire size should be compatible with the amperage rating of the breaker to ensure safety and prevent overheating. For a 50 amp breaker, you should use a minimum of 6 gauge wire.
How big of breaker do you use for 115 volt?
Depends on the wire size used in the circuit. If you use AWG # 14 wire you must use a 15 amp breaker. If it is wired with AWG # 12 wire then you use a 20 amp breaker. If a AWG # 10 wire is used then a 30 amp breaker is required. The breaker protects the wiring from overheating so you must use the proper size breaker for the wire used.
What size amp circuit breaker should be used in a kitchen with aluminum wire?
Don't use aluminum wire inside the house.
Can you use 40 amp breaker for your lights and plug ins?
If you are referring to house wiring then the answer is no. A breaker protects the wire size that is connected to the breaker. In home wiring most homes are wired with a #14 wire which is rated at 15 amps. That is why the wire is protected by a 15 amp breaker. The correct wire size to connect to a 40 amp breaker is a #8. This size wire is too large to connect to receptacles an light fixture terminals.
