DC Distribution Calculator

Calculate wire gauge and fuse sizing for 12V/24V DC marine systems per ABYC E-11

Input Parameters

Results

--
Current Draw
amps
--
Min Wire Gauge
AWG
--
Fuse/Breaker
amps
--
Actual Vdrop
%

Reference

ABYC E-11 3% rule: Critical circuits (nav lights, bilge pumps) 10% rule: Non-critical circuits (cabin lights, fans) CM = 10.75 × 2L × I / Vdrop