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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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9y ago
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14y ago

# 6 AWG (american wire gauge)

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

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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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#6

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# 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 gauge wire should be used for a 480 volt 100 amp run of just under 100 feet?

A #3 copper conductor will do the job.


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 needed for 100 amp service 700 feet away?

A 400 MCM copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 700 feet on a 240 volt system. This size will allow the conductor to be loaded to 80 amps. 100 x 80% = 80 amps. Conductors are only allowed to be loaded to 80% or their rated capacity. If you need the full 100 amps then you would need to use a wire with a rating of 125 amps. 125 x 80% = 100 amps. A 600 MCM copper conductor will limit the voltage drop to 3% or less when supplying 125 amps for 700 feet on a 240 volt system.


What is the approximate voltage drop 120 if 10 gage solid copper coated wire is used?

Your question cannot be answered, as we do not know what type of wire the copper is coated on, nor do we know how long the wire is. But, let's assume that it is solid copper # 10 wire 100 feet long. The voltage drop is zero when there is no electricity flowing through it. (That is, 'current', measured in Amperes, or just Amps.) If there is, say, 1 Ampere of current, the voltage drop is close to 1/10th Volt in the 100 feet. If there is, say, 15 Amperes of current, the voltage drop is a tiny bit over 1-1/2 Volts. If you double the wire's length, the voltage drop also doubles, and if the current doubles, the voltage drops also doubles. Or, as in my example, above, if the current rises by 15 times, then the voltage drop rises by 15 times.

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 gauge wire should be used for a 480 volt 100 amp run of just under 100 feet?

A #3 copper conductor will do the job.


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

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


Wire barrel shotgun 12 gage New Worcester what is the value?

40-100 or so


What wire gage for 130' supply 100 amp service?

I would run 1/0 gauge.


How is wire pulled into a conduit of 100 feet?

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 needed for 100 amp service 700 feet away?

A 400 MCM copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 700 feet on a 240 volt system. This size will allow the conductor to be loaded to 80 amps. 100 x 80% = 80 amps. Conductors are only allowed to be loaded to 80% or their rated capacity. If you need the full 100 amps then you would need to use a wire with a rating of 125 amps. 125 x 80% = 100 amps. A 600 MCM copper conductor will limit the voltage drop to 3% or less when supplying 125 amps for 700 feet on a 240 volt system.


What is the approximate voltage drop 120 if 10 gage solid copper coated wire is used?

Your question cannot be answered, as we do not know what type of wire the copper is coated on, nor do we know how long the wire is. But, let's assume that it is solid copper # 10 wire 100 feet long. The voltage drop is zero when there is no electricity flowing through it. (That is, 'current', measured in Amperes, or just Amps.) If there is, say, 1 Ampere of current, the voltage drop is close to 1/10th Volt in the 100 feet. If there is, say, 15 Amperes of current, the voltage drop is a tiny bit over 1-1/2 Volts. If you double the wire's length, the voltage drop also doubles, and if the current doubles, the voltage drops also doubles. Or, as in my example, above, if the current rises by 15 times, then the voltage drop rises by 15 times.