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What size conductors for 3 phase 175 amp circuit breaker 120-208 thhn copper 25' in sch 40 PVC?
Wiki User
∙ 10y ago
A 2/0 copper conductor with an insulation factor of 90 degrees C is rated at 195 amps. It is not stated if this is a motor feeder, if it is, the feeder has to be rated at 125% of the motors full load amperage. If this is a service and the 175 amps is the main disconnect rating then the 2/0 will work fine.
Wiki User
∙ 10y ago
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Can a double pole 20 amp breaker be used with 12-2 wire for a single 220 circuit?
The term "double pole" usually means a breaker with 2 handles that attaches in the space as a normal single pole breaker. If this is what you mean, no, you cannot. There is no potential, or voltage, between the wire terminals. If by "double pole" you mean what is usually called a 2-pole breaker, which is a breaker with 2 handles that attaches in the space of 2 single pole breakers, then yes, you can use this breaker and 12/2 wire to produce a 220v circuit.
What is the minnimum size equipment grounding conductor required by the NEC for a branch-circuit protected by a 50-ampere rated circuit breaker?
#10 copper
Have 30 amp double pole need 15 amp 120v?
Remove the 30 amp double pole breaker and install at least one single pole 15 amp breaker. It is best if the other slot is not left open so if you have another single pole breaker of any size install it in the 2nd spot so it isn't open when you replace the cover on the panel. For your 15 amp circuit you need #14 gauge copper wire or larger with a hot, neutral, and ground. Your 30 amp circuit was probably wired with #10 gauge conductors. These will probably work on your 15 amp circuit but it may be difficult to connect #10 conductors to devices.
What kind of circuit breaker should you use with aluminum wire?
Almost all circuit breakers are rated for copper (cu) or aluminum (al), there is a label on every breaker made, as long as it has the (al) marking it is suitable for use with aluminum wire
What size of electrical wire needed for 100A circuit breaker?
A #3 copper conductor with an insulation factor of 90 degrees C is rated for 105 amps.
What are good conductors for a closed circuit?
silver, copper are generally used in electric circuits
What are some good conductors for a closed circuit?
silver, copper are generally used in electric circuits
What are conductors of elecricity?
Conductors are materials that allow the flow of electricty in a circuit. Examples are metals, the two most common used being copper and aluminum.
What materials allows electricity to flow through easily?
Conductors do, one example is copper.
Can a double pole 20 amp breaker be used with 12-2 wire for a single 220 circuit?
The term "double pole" usually means a breaker with 2 handles that attaches in the space as a normal single pole breaker. If this is what you mean, no, you cannot. There is no potential, or voltage, between the wire terminals. If by "double pole" you mean what is usually called a 2-pole breaker, which is a breaker with 2 handles that attaches in the space of 2 single pole breakers, then yes, you can use this breaker and 12/2 wire to produce a 220v circuit.
What is the margin of safety with selecting circuit breakers?
The NEC requires that if the intended rating of a circuit corresponds to a standard size breaker then that size breaker must be used. In most instances, "rating of a circuit" means the intended connected load plus 25%. If the intended rating of a circuit does not correspond to a standard size breaker, you can go up to the next standard size without any other adjustments. In most circumstances, besides what I've already stated, a 14 gauge copper wire cannot be connected to a breaker larger than 15 amps, 12 gauge copper to a 20 amp breaker, and 10 gauge copper to a 30 amp breaker.
What is the ampacity of the 14 conductors in the conduit application?
14 AWG copper conductors are limited in the NEC to 15 amps. You must protect them with an overcurrent device such as a breaker or fuse not exceeding 15 amps.
What is the minnimum size equipment grounding conductor required by the NEC for a branch-circuit protected by a 50-ampere rated circuit breaker?
#10 copper
Have 30 amp double pole need 15 amp 120v?
Remove the 30 amp double pole breaker and install at least one single pole 15 amp breaker. It is best if the other slot is not left open so if you have another single pole breaker of any size install it in the 2nd spot so it isn't open when you replace the cover on the panel. For your 15 amp circuit you need #14 gauge copper wire or larger with a hot, neutral, and ground. Your 30 amp circuit was probably wired with #10 gauge conductors. These will probably work on your 15 amp circuit but it may be difficult to connect #10 conductors to devices.
What size wire and breaker do you need for a 200 amp continuous duty circuit?
AWG 2/0 copper wire.
What kind of circuit breaker should you use with aluminum wire?
Almost all circuit breakers are rated for copper (cu) or aluminum (al), there is a label on every breaker made, as long as it has the (al) marking it is suitable for use with aluminum wire
What are two good conductors?
Metals are good conductors of electricity, two of the best conductors are silver and copper.
