Everything I've read, here and elsewhere, says that the AC Green wire must be connected from the main AC panel to the engine negative terminal or the main negative bus. How direct does that connection really have to be?
Is there any reason I can't wire it from the battery charger directly to the nearest negative bus bar, presuming that bar is wired back to the main negative bus and thereby to the engine with sufficient gauge wire all the way? There are no ground loops here.
My AC system has only two circuits: one for an outlet and one for the charger. It is a 30A system and nothing less 10awg wire anywhere except for some very short 12awg runs that came as part of the main panel.
Details to forestall questions and the usual slate of suggestions: There's a galvanic isolator and an ELCI breaker between the shorepower inlet and the main panel. The battery charger circuit also has a GFCI outlet in line (between the panel and the charger) purely to provide GFCI protection for that circuit. The main panel does have a reverse polarity light. There is no voltmeter. There is no inverter.
Is there any reason I can't wire it from the battery charger directly to the nearest negative bus bar, presuming that bar is wired back to the main negative bus and thereby to the engine with sufficient gauge wire all the way? There are no ground loops here.
My AC system has only two circuits: one for an outlet and one for the charger. It is a 30A system and nothing less 10awg wire anywhere except for some very short 12awg runs that came as part of the main panel.
Details to forestall questions and the usual slate of suggestions: There's a galvanic isolator and an ELCI breaker between the shorepower inlet and the main panel. The battery charger circuit also has a GFCI outlet in line (between the panel and the charger) purely to provide GFCI protection for that circuit. The main panel does have a reverse polarity light. There is no voltmeter. There is no inverter.