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Wire Size Calculator

Brief Instructions for the Wire Size Calculator

In order for the energy from your Solar Panels to reach your Battery Bank without serious loss of power, you will need to calculate the proper size of wires to use. Just like water in a pipe, the smaller the pipe, the less water that can pass through it. To use the Wire Size Calculator, just follow these 4 simple steps:
  1. Enter Solar Panel output voltage. Usually 12, 24, or 48 volts.
  2. Enter the total Amps that your Solar Panels will produce all together.
  3. Enter the distance in feet from your Solar Panels to your Battery Bank / Charge Controller.
  4. Click on 'Calculate' to see the size wire required in AWG (American Wire Gauge).

If you need more detailed instruction, please click here.
Step 1 Enter the output voltage of your Solar Panels.
Step 2 Enter the maximum amperage your panels will output.
Step 3 Enter the Distance in feet from Batteries to Solar Panels.
Step 4 Enter percentage of acceptable loss.   ( 3% - 5% typical )