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Q: What size service cable for 100 amp main panel 100 feet away?
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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 size underground service entry cable needed for 100 amp sub panel 600 feet from main?

AWG 2/0 copper.


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.


How long is the anchor cable for a flagpole 24 feet high which is 10 feet away from the base of its anchor cable 25 feet 26 feet 30 feet or 34 feet?

Using Pythagoras' theorem it is 26 feet


What size wire do you need to run overhead to a 50 amp service five hundred feet away?

For that distance I would run AWG # 3 copper and install a sub-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


Exterior electrical service wires should be 3 feet away from what?

Exterior electrical service wires be at least 3 feet away from the sides, bottom, top, and front of all openable windows.


Exterior electrical service should be 3 feet away from what?

Windows that can be opened.


What size wire for 100 amp panel 200 feet away from a 200 amp service?

This is a voltage drop question. A voltage value needs to be stated. Assuming that the 200 amp panel is a single phase 120/240 volt sub panel. 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.


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

AWG # 4


What wire size is used to make service connection from a 200 amp service panel to a 40 amp service panel 150 feet away?

8 AWG copper is rated for 40 amps. Over 150 ft, at maximum current, the voltage drop would be about 3.76 volts. Using 6 AWG would have a voltage drop of 2.36 volts with the same 40 amps.


What size wire for 100 amp sub panel 200 feet away from a 100 amp service?

This is a voltage drop question. A voltage value needs to be stated. Assuming that the 100 amp panel is a single phase 120/240 volt sub panel. 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.

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