Is this a portuguez name?
I found a retangular digital meters for $15 at ebay store caled asia
When you said across the line is this the two hot lines for a220volts? The gage I have also needs a 5 volts dc . it come with a litle transformer for 12volts.
The propultion engine
and the generator ground starter cable goes to the primary negative bus. [ my DC system is isolate from the hull}.
The AC sistem is also isolate from the hull and from the DC.
I have 220volt shore power
thru a isolated transformer to a shore/generator switch and them to a inverter
Is this OK? Now you make me realize that if a have a short in the AC side when I'm using the generator that could be pass to the DC by mens of the starter ground cable,is this corret, if not how could i isolate the two systems?