Electrical Builder Tool

Build and compare one or more electrical circuits for early RV, van, trailer, and off-grid planning.

Clean reset version: Estimate circuit voltage drop, save Electrical profiles, and start from your Battery or Solar plans.

Planning Inputs

Circuit 1

Circuit name

Nominal circuit voltage (V)

Operating current (A)

Input power (W; optional with amps)

One-way cable length (ft)

Actual source voltage (V; optional)

Target voltage drop (%)

Circuit type

Copper wire to compare

Results

This estimates copper conductor voltage drop using the complete out-and-back cable length. Wire temperature, allowable current, bundling, insulation, terminations and equipment protection still determine the final installation. AC estimates use entered operating current and conductor resistance; they do not model power factor or reactance.

Enter circuit ratings and cable lengths, then calculate.

Reference: Blue Sea Systems: circuit protection and Victron: DC wiring.