AC Power Calculator

Calculate shore power load, voltage drop, and cord sizing for 30A/50A marine service connections

Input Parameters

Results

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Load Current
amps
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Voltage Drop
V
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Voltage Drop
%
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Status
Note: Per ABYC E-11 standards. Always verify with a licensed marine electrician.

Reference

ABYC E-11: Max 3% voltage drop for boat feeders 30A service: 120V single phase 50A service: 240V split phase Vdrop = I × R × L × 2