12v Wire Sizing Guide for Campervans

Find the correct wire size for any 12V circuit in seconds.

This easy-to-read chart shows you exactly what cable size to use based on amps and cable length - helping you avoid voltage drop, overheating, and undersized wiring.

What this chart helps you do:

• Choose the correct cable size instantly
• Avoid voltage drop issues in 12V systems
• Size wiring safely for different loads
• Use both AWG and mm² with confidence

What’s included:

• Full 12V wire gauge chart (AWG & mm²)
• Cable sizing based on amps and total cable length
• 3% voltage drop standard clearly applied
• Colour-coded reference for easy reading
• Typical use guide (lighting, fridge, inverter, etc.)

Best for:

• Quick reference during a campervan build
• Checking cable sizes before installation
• DIY builders working on 12V systems

Delivered instantly after purchase