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What Size Wire for 100 Amp Sub-Panel?

Looking for the right size wire for your 100 amp sub-panel for a detached building, garage, or shed?

Below are the best selling wires our customers use for service to a 100 amp sub-panel - all available by the foot at our store WireAndCableYourWay.com.

Copper Wire

1.) #3 THHN/THWN-2 Wire for 100 Amp Sub-Panel

  • Single Conductor #3 gauge THHN Copper Wire
  • Needs to be buried in a conduit
  • Our most popular

Click here for pricing on #3 gauge THHN wire

2.) #2 THHN/THWN-2 Wire for 100 amp sub-panel

  • Single Conductor #2 gauge THHN Copper Wire
  • Needs to be buried in a conduit

Click here for pricing on #2 gauge THHN wire

3.) #2/3C with ground Tray Cable (THHN-PVC) for 100 Amp Sub-Panel

  • Multi-Conductor #3 gauge THHN Copper Wire
  • Rated for direct burial - no need for conduit

Click here for pricing on #2/3C with ground Tray Cable (THHN-PVC)

Aluminum Wire 

1.) #2 XHHW-2 Wire for 100 Amp Sub-Panel

  • Single Conductor #2 gauge Aluminum Wire
  • Needs to be buried in a conduit

Click here for pricing on #2 gauge Aluminum wire

2.) #1 XHHW-2 Wire for 100 Amp Sub-Panel

  • Single Conductor #1 gauge Aluminum Wire
  • Needs to be buried in a conduit

Click here for pricing on #1 gauge Aluminum wire

3.) 2-2-2 Ramapo Triplex Underground Secondary Distribution Cable for 100 Amp Sub-Panel

  • Multi-Conductor #2 gauge Aluminum Wire
  • Rated for direct burial - no need for conduit

Click here for pricing on 2-2-2 (URD) Triplex Aluminum Underground Cable


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All of the cables above are in stock, available by the exact foot you need, and shipped the same day ordered.

Please note Wire And Cable Your Way does recommend consulting with a local electrician who can advise you on all local codes and other variables that may effect the wire size needed such as the length of your run.

Feel free give us a call at 855-880-8010 or email us here with any questions.

Thanks for stopping by!

Your Pal,
Willie

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