Galvonic Isolator

Bill Mckinnon · Post by **Bill Mckinnon** » May 15th, '09, 14:01

Just want to check with you guys. Picked the isolator up and am ready to install. The only question is does it need to be connected to the bonding system on the boat. Looked at the building tips section but just want to be sure

Thanks

Capt. Bill McKinnon
Charlesron SC

CaptPatrick · Post by **CaptPatrick** » May 15th, '09, 14:38

Bill.

Emphatically NO. The galvanic isolator is part of your AC electrical system and is only grounded to the main AC ground.

Br,

Patrick

Bruce · Post by **Bruce** » May 15th, '09, 18:34

Actualy Pat thats not correct.

The isolator permits ac currents but blocks the dc currents that can occur because of boats with dissimilar metals in the water.

One terminal is the shore ground, the other is the boat ground and AC ground which is all tied together. Since the engines are tied to the bonding system, that ties everything to the boat side of the isolator.

Take a look at the Guest paper work and wiring diagram from Patricks boat. I believe its in the generator folder.

CaptPatrick · Post by **CaptPatrick** » May 15th, '09, 20:00

Know you're right Bro, in that indirectly it's tied to the bonding system and negative battery through the engine ground. My point was really that the isolater isn't directly wired into the bonding system...

Sorry for being inconcise.

Bill Mckinnon · Post by **Bill Mckinnon** » May 16th, '09, 06:45

Thanks Guys, The way i read the diagram is the ac ground is tied to the negative ground on the engine or the battery. That way all grounds on the boat are connected. If i am not right let me know

Thanks

Bill[/b]

Bruce · Post by **Bruce** » May 16th, '09, 18:34

Bill,
You are correct.

babycakes · Post by **babycakes** » May 17th, '09, 08:04

Thats what makes this site so great, being humble when a mistake is made.

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