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It primarily depends on the voltage, distance and load. The longer the cable, the higher the resistance/impedance. There are also factors such as the ambient temperature, type of insulation, number of conductors, and whether it is buried in the ground or suspended in the air.

At a very minimum, 100 Amps (using a 24kVA generator) could feed a house using type THHN 60C conductors having AWG 1 or larger, but only over about 230 feet (copper conductor, 240 volts) before voltage drop would exceed 3 percent. A smaller conductor would not be allowed if the system actually pulls 100A. If the load is actually 60A, for example, you can get over 100 feet using AWG 6 (or a bit over 60 feet if it's at 120 volts).

Note: A typical house with 100A panel does NOT use 100A at the same time, and the generator (and connecting cable) should be designed to supply only the normal load, or perhaps just the emergency loads (if it is a standby system).

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There are a couple of choices. Single conductor is out of the question as it is physically too hard to work with. That type of current handling capacity is done with bus bars using bus trough. Parallel and triple runs of conductors is the more likely scenario Parallel runs of 750 MCM or triple runs of 400 MCM will give you a total ampacity of 1000 amps. A 750 MCM copper wire is rated at 500 amps and a 400 MCM wire is rated at 345 amps.

Normally you would run a minimum of two parallel runs 750(mcm/kcmil) 90c rated copper wire depending on other circumstances like distance, conduit fill, and wire load you might need to step up to 2 runs of 1000(mcm/kcmil) or 3 runs of 500(mcm/kcmil) copper rated at 90c.

The formula you are looking for is Watts = Amps x volts = 100 x 240 = 24000 or 24 KVA x pf. The most likely single phase generator would be 25kW as it is a standard size.

To carry 100 amps you would need to use AWG-1.

You need to mention the number of phases, voltage, copper or alluminum cable, to get the correct reply / amswer

Service entrance wire must be AWG # 4 Copper wire.

A #3 copper wire with an insulation rating of 75 or 90 degrees C is rated at 100 and 110 amps consecutively.

To answer this question the voltage and phase is needed.

4 AWG copper or 2 AWG aluminum.

Q: What size wire should you use for 1000 amps?

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wire is often rated at 600 vac, 22 amps reqires # 10

Double you answer for 2000 amps and for times your answer for 1000 amps.

Service wire for 100 amps requires AWG #3 copper.

A #12 wire is rated at 20 amps, continuous loading at 80% = 16 amps. # 10 wire is rated at 30 amps, continuous loading at 80% = 24 amps.

The only way to determine the cable wire size needed for a 1000 watt air conditioner is to find the load size. To get the load size you will need to use the formula Amps = Watts or Volts. With that being said, you will need a number 14 copper wire.

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3/0 wire 3/0 wire

15 amps requires AWG # 14 wire.

wire is often rated at 600 vac, 22 amps reqires # 10

A #10 wire has the capacity for 30 amps. No breaker larger than 30 amps should be used to protect the circuit.

Depends on how many amps it pulls and the size of the wire in the circuit.

Double you answer for 2000 amps and for times your answer for 1000 amps.

Service wire for 100 amps requires AWG #3 copper.

A #12 wire is rated at 20 amps, continuous loading at 80% = 16 amps. # 10 wire is rated at 30 amps, continuous loading at 80% = 24 amps.

The only way to determine the cable wire size needed for a 1000 watt air conditioner is to find the load size. To get the load size you will need to use the formula Amps = Watts or Volts. With that being said, you will need a number 14 copper wire.

Number 10 thnn copper wire.

15 amps.

15mm approx.