I’m refurbishing the electrics on my boat with Solar plus some MPPTs, AC shoreline, a multiplus 12/800/35, a 200ah smart Victeon LifePo4, a DC/DC charger to charge it, Lynx Smart BMS and Distributon, CerboGX plus Touch 50, battery protect etc.
I think I’m pretty much understanding everything except one thing.
On a fibreglass boat, what do I consider ground?
I’ve done a lot of searching online, but the answers are very woolly.
It‘s a 50 year old boat, and nothing has ever been bonded to anything else, only has one sacrificial anode on the prop and it seems perfectly happy like that.
I’ve got a sintered bronze plate that is left over from an old SSB radio that I connect all the electronics RF grounds to, but that doesn’t seem suitable?
Do I just consider the negative terminal of the battery earth?