This is wrong, right?

[kloudie1]

I think with Ron on the incoming green.. put it straight to ground buss, leave smaller jumper for Rev Pol part of breaker..
I am thinking that after putting incoming green to buss, ya leave the breaker as is for safety.. but ...if ya were in a situation where ya had to use reversed polarity, all you'd have to do (after putting green inlet straight to buss) is remove the small green jumper from the breaker temporarily.. would only take a minute and should make it memorable enough to put back correctly after use.. If I am reading the wires correctly, you'd have a red light and a ground, but the breaker would not trip and would still work on overcurrent, albeit reversed.

 

[Roger Long]

I think with Ron on the incoming green.. put it straight to ground buss, leave smaller jumper for Rev Pol part of breaker..

That makes good sense, if I can stretch the wire that far. If not, I'll increase the size of the green jumper to match the incoming cable.

I've just been down to the boat and plugged a shore power cable in and lead it back to the cabin. I can confirm that there is not a hint of continuity between the white and green wires with any set of switch positions. I should have checked this first and saved the long thread. But, then we wouldn't have learned all this other stuff, would we?

I also checked that there is open circuit between the black and white except when the hot water heater is on and open circuit between black and green in all switch positions.

Not a hint of continuity between ground bus and 12 V. bus. While pulling out my bonding system (wires black and crumbly with non W.T. terminals), I found a connection between the bonding system and the negative wire running back from the fuel pump. That probably accounts for the funny looking copper bottom paint patterns around my bronze through hulls.

 

[Auspicious]

You want to make sure that there is no continuity between white/neutral and green/ground on-board your vessel but it does not look like there would be.

Can we explore this a bit?

My understanding is one and only one connection between ground and neutral. In your house and plugged in to shore power that happens at the closest power transformer from transmission voltage to distribution voltage. If you are NOT plugged in to shore power but running AC on the boat there should be a connection between ground and neutral at either the generator or inverter.

What am I missing?

 

[Maine Sail]

Can we explore this a bit?

My understanding is one and only one connection between ground and neutral. In your house and plugged in to shore power that happens at the closest power transformer from transmission voltage to distribution voltage. If you are NOT plugged in to shore power but running AC on the boat there should be a connection between ground and neutral at either the generator or inverter.

What am I missing?

Your not missing anything except that when discussing Roger's boat he does not have a secondary "source" as in generator or inverter. The only place green and white are tied together is at a "source" but Roger does not have another source other than AC shore power.

 

[Auspicious]

Okey dokey. Wanted to be sure physics hadn't changed while I wasn't looking! *grin*