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I have been running sensitive sonar equipment off a battery on our vessel, this battery is also connected to the Phoenix 12/800 Inverter. When both the sonar and inverter are running there is "noise" present in the sonar echogram, apparently this can happen if the ground is to the chasis and not the negative battery terminal. Is it OK to connect the ground to the negative battery terminal?
Thanks for the help
https://community.victronenergy.com/questions/7231/do-i-ground-twice.html
Chassis should be connected to the (boat) system ground - where ever that is for safety reasons.
That may or may not be the negative battery terminal depending on how you're configured.
If it resolves the noise issue, great. Otherwise you might have to think about different forms of filtering, separation or managing the loop areas of circuits.
Thanks Kai,
Whats the worst that could happen if I ground to the negative terminal?
Don't know - I haven't seen how your system is wired up. Do you have a photo or sketch that shows the inverter, sonar and wiring?
