I’ve just mounted the inverter in my sailboat and am looking for the correct size cable for the neutral- ground bond. I’ve read that neutral should be 1 size down from the battery cables. But my Phoenix came with 25mm2 cable with no AWG indicated. What size cable should use?
For the Neutral ground link, this should be of suitable size for the fault current expected to flow through it. For a 1200W inverter this would be 10A for a 120V system, this would be 10 or 11AWG. Whilst the inverter has a higher peak power, a short would give a transient fault - cleared by the breaker in the live output, or the inverter shutting down on overload. Batery curent would not flow through this link.
