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A #1 copper wire with an insulation rating of 90 degrees C is rated at 140 amps.

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โˆ™ 2009-11-07 19:08:34
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Q: What size wire is needed to feed a 125 amp sub panel from a 200 amp panel less than 200 wire feet away?
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Related questions

What size wire is needed to feed 100amp 120 volt panel 300 feet away?

A 250 MCM copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 300 feet on a 120 volt system.


What is distance needed around electrical panel?

Three feet of free and clear space in front of panel.


What size wire do you need from a 200 amp panel to a 150 amp sub panel about 80 feet away?

1/0 copper


What size service cable for 100 amp main panel 100 feet away?

20Sqmm


What gauge wire to use for direct burial for a garage that is 400 feet from your house?

Depends on the size of the sub-panel in that garage. If you are installing a 60 amp sub-panel 400 feet away from the main service panel then use AWG # 4.


What size wire is needed for 100 amp sub panel that is 250 feet away from main panel?

A 1/0 MCM copper conductor will limit the voltage drop to 3% or less when supplying 100 amps for 250 feet on a 240/120 volt system. This calculation is for a full 100 amps at the panel. If exact amperage is known the conductor size can be reduced to match the known amperage.


What size wire to run 250 feet away 60 amp sub panel?

AWG # 4


What size of wire is needed for a 100 amp sub panel 80 feet away from main panel?

This is a voltage drop question. The sub panel's voltage needs to be stated to answer the distance part of the question. A #3 copper conductor with an insulation factor of 75 or 90 degree C is rated at 100 and 105 amps respectively.


Can you use aluminum service cable to feed a sub panel?

Yes, as long as it has the necessary ampacity for the load and is properly fastened at each terminal. For example, we have a 4/0 aluminum cable feeding our 200 A subpanel 120 feet away.


What is min working space in front of 240V panel?

Three feet clearance is needed in front of electrical service equipment.


What size underground wire do you need from a 200 amp panel to a 100 amp panel 150 feet away?

Need to know what the load amperage is on the 100 amp panel. If interested, open discuss question page.


What size aluminum wire is needed for 100 amp sub panel 200 feet away from main panel?

Buried or conduit #2/0 aluminum will exceed the NEC recommended 3% or less and provide a 2.72% drop Increasing to 3/0 provides a 2.26% drop Make sure you resize your ground.

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