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It depends on the voltage being used. That is because the size of the cable is determined by its resistance, and to calculate the allowable resistance you need to know the voltage drop. Lower resistance means a thicker cable.

Normally the allowable voltage drop is a percentage of the supply voltage, 5% for example. On a 120 v system this would allow a 6 v drop while on a 240 v system the voltage drop could be 12 v.

So for a given load current, the cable for a 120 v system would need half the resistance and double the cross-section area than a cable for 240 v.

But for a given amount of power, the current on the 240 v system would be halved, so the cable resistance could be four times higher and its cross-section one quarter of that needed for 120 v.

That is why higher voltages are used to transmit power over long distances.

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10y ago
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5mo ago

For a 240-volt, 50-amp circuit at 100 feet in length, you would need to use a 6-gauge wire. This wire size ensures that you have minimal voltage drop over the distance, allowing your circuit to operate safely and efficiently. Make sure to consult local electrical codes and regulations before proceeding with the installation.

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15y ago

# 6 AWG (american wire gauge)

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14y ago

What is the location of this installation? Is this a home (dwelling unit)?

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12y ago

A #1 copper conductor will limit the voltage drop to 1% or less when supplying 100 amps at 220 volts for a distance of 50 feet.

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15y ago

#6

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10y ago

# 6 copper

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Q: What gage wire for 240 volt 50 amp 100 feet?
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What gauge wire for a 220 volt 60 amp underground in conduit at 100 feet?

Might depend on your local codes, but here it is 6 AWG wire. <<>> A #4 copper conductor will limit the voltage drop to 2% or less when supplying 60 amps for 100 feet on a 230 volt system.


What wire size to use for 90 amp load at 480V at 75 feet?

Up to about 100 ft the size of the wire is determined by the max current and not the distance. A 90 amp supply needs #6 wire. <<>> A #2 copper conductor will limit the voltage drop to 3 percent or less when supplying 90 amps for 75 feet on a three phase 480 volt system.


What gauge of wire do i need for my 220 volt 100 amp breaker?

For a 220 volt 100 amp breaker, you would typically need a wire gauge of 2/0 AWG (American Wire Gauge) or larger. It is recommended to consult with a professional electrician to ensure the proper gauge is used for your specific installation.


What size wire needed for 100 amp service 700 feet away?

For a 100 amp service 700 feet away, you would typically use 3/0 AWG aluminum wire to account for the voltage drop over that distance. It is important to consult with a licensed electrician or local building codes to determine the exact specifications required for your specific situation.


What wire size needed to 150 amp load 100 feet undergroud?

Assuming the service voltage is 240 volts. A 2/0 aluminum conductor, with an insulation factor of 90 degrees C, will limit the voltage drop to 2% or less when supplying 125 amps for 100 feet on a 240 volt system.

Related questions

What gauge wire for a 220 volt 60 amp underground in conduit at 100 feet?

Might depend on your local codes, but here it is 6 AWG wire. <<>> A #4 copper conductor will limit the voltage drop to 2% or less when supplying 60 amps for 100 feet on a 230 volt system.


What is the required wire size for a 230 feet run 480 volt 100 amp?

Depends on length. The more length, the more resistance.


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I would run 1/0 gauge.


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A 100 foot fish tape and wire lubrication will be needed to make this wire pull.


What size wire for a 100 amp sub panel 40 ft away?

A #1 copper conductor is rated at 140 amps with an insulation rating factor of 90 degrees C at 240 volt single phase, will give you a full 100 amps at 200 feet. #4 wire should give you 95 amps. Anything over 200 feet you will start loosing more amps.


What re size for a 220 volt 100 amp panel distance d 100 feet?

A #1 copper or 1/0 aluminium conductor will limit the voltage drop to 3% or less when supplying 100 amps for 100 feet on a 240 volt a single phase system.


What is the correct wire size to install with a distance of 200 feet for a 100 amp single phase underground service?

This is a voltage drop question. A #1 copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 200 feet on a 240 volt system. Or a 3/0 copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 200 feet on a 120 volt system. In your question you sis not stipulate what the working voltage is.


What wire size to use for 90 amp load at 480V at 75 feet?

Up to about 100 ft the size of the wire is determined by the max current and not the distance. A 90 amp supply needs #6 wire. <<>> A #2 copper conductor will limit the voltage drop to 3 percent or less when supplying 90 amps for 75 feet on a three phase 480 volt system.


What size wire do you need to run 100 ft 75 amp 230 volt?

Depends on the size of the circuit which you did not list.


What size wire for 30 amp breaker 240 volts 100 feet?

That distance you are going to have to install a sub-panel and run AWG # 4 wire and even then you will have a voltage drop of 7.45 volts giving you 232.55 volts at the sub-panel which is acceptable.


What gauge of wire do i need for my 220 volt 100 amp breaker?

For a 220 volt 100 amp breaker, you would typically need a wire gauge of 2/0 AWG (American Wire Gauge) or larger. It is recommended to consult with a professional electrician to ensure the proper gauge is used for your specific installation.