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What Size Wire for a 100 Amp 240V Sub-Panel?

100 amp sub-panels are widely used for detached buildings, large additions, and workshop installations. This is a critical calculation for ensuring safe and code-compliant installations.

Results

Minimum Wire Size1 AWG
Base Ampacity130A
Adjusted Ampacity135.2A
Temp Correction Factor1.04
Bundling Factor1

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