​Inverter Cable & Accessories

A 2000W inverter running at full load on a 12V system pulls approximately 170 to 200 amps. To handle this massive current safely, you should use 00 B&S (roughly 70mm²) or 0 B&S (50mm²) cable for very short runs. Using cable that is too thin will cause it to overheat rapidly and may lead to the inverter shutting down due to low voltage.

Proper cable sizing is the most important factor for safety and performance when using high draw appliances like coffee machines or kettles. Thicker copper provides less resistance, allowing the inverter to draw the power it needs without stressing your wiring. Always match your cabling to the maximum potential draw of your device to prevent electrical faults.

Explore our range of 12V Pure Sinewave Inverters to find your wattage requirements, or see our Lithium Batteries for high discharge power sources.

Keep inverter cables as short as possible, ideally under one to one and a half metres. Because 12V systems are highly sensitive to resistance, long cable runs cause a significant voltage drop that can prevent the inverter from starting or running high draw appliances correctly.

If you must mount the inverter further away from your batteries, you are forced to increase the cable thickness significantly to compensate for the distance. Most professional builds place the inverter right next to the battery bank to maximize efficiency and minimize heat. This setup allows the shorter DC cables to handle the heavy current while the 240V AC power can be safely run longer distances through standard extension leads if needed.

Check your system performance with our Battery Monitors & Shunts to see if voltage drop is affecting your setup.

Both ANL and MEGA fuses are excellent choices for inverters because they both use a secure bolt down connection. A MEGA fuse is often preferred for 12V setups up to 300 amps because the holders are more compact and easier to mount in tight spaces like canopies or battery boxes.

ANL fuses are typically used for even higher current applications and are widely available in very high amperage ratings. The primary benefit of both styles is the mechanical fix, which prevents the fuse from vibrating loose on rough outback tracks. Using a bolt down fuse reduces the risk of poor contact and heat buildup, providing a safe barrier between your battery bank and your inverter.

Find the right protection in our Circuit Breakers & Fuses collection.

Pre made inverter cable kits are generally better for most travelers because they feature professional, high pressure hydraulic crimps that are difficult to replicate with basic hand tools. A poor crimp on a high current inverter cable creates high resistance, which leads to heat buildup and a potential fire risk.

Building your own cables is only a good move if you have access to a heavy duty hydraulic crimping tool and high quality lugs. For most setups, a pre made kit provides a plug and play solution with correctly sized terminals and protective heat shrink already applied. This saves time and provides the confidence that your main power links are safe and ready for heavy off grid use.

Browse our Battery Wiring Kits for professionally terminated leads and installation gear.