DC Cables

Use the Battery to Inverter Power Cables 2/0 AWG (950-0070) or 1/0 AWG (950-0071) to wire the batteries to the inverter. Select the cables compatible with your inverter and inverter settings. You can also use your own DC cables by using the HELIOS ESS Connector Set (950-0072) if the cables are rated for the maximum voltage of any circuits sharing the same wiring space, sized according to local codes, and meet the following requirements.

1. Copper-stranded cable. DC cables must be stranded, copper, and rated 90 °C minimum. Terminate the cables on one side with lugs that fit the DC terminals on the inverter, and on the other side of the cable the plug and pull quick connects are used to mate with the plug and pull terminals on the HELIOS ESS battery.

2. Minimum and equal cable lengths. Select a location that minimizes the length of battery cables to reduce voltage drop from the impedance leading to reduced performance. When installing multiple batteries in parallel, the length of all the battery cables should be the same.

3. Appropriate cable gauge. The cables should be capable of carrying the normally expected current, plus a margin of safety.

4. Proper polarity. Positive (+) is connected to positive (+), and negative (-) is connected to negative (-). Verify the polarity of all connections before energizing batteries.