Study guides

☆☆

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

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.

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

2/0 (2 ought) Copper or 4/0 Aluminum.

There is not enough information to answer this question. What is also needed is voltage, single or three phase and whether the installation is direct bury, overhead, or in a conduit system.

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

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.

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

2/0 (2 ought) Copper or 4/0 Aluminum.

A 300 MCM aluminum conductor will limit the voltage drop to3% or less when supplying 100 amps for 400 feet on a 240 volt system.

There is not enough information to answer this question. What is also needed is voltage, single or three phase and whether the installation is direct bury, overhead, or in a conduit system.

Please use the Discussion Area to explain the significance of the "100 feet".

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

1/0 copper

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.

20Sqmm

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.

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.

People also asked