Study guides

☆☆

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

Write your answer...

Submit

Still have questions?

Continue Learning about Natural Sciences

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.

1/0 copper

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

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.

Windows that can be opened.

Related questions

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.

AWG 2/0 copper.

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.

Using Pythagoras' theorem it is 26 feet

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

1/0 copper

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

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.

Windows that can be opened.

AWG # 4

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.

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.

People also asked