Hunter 26 Ground?

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May 2, 2011
7
Hunter Legend 26 Lough Erne, Ireland
I have got a 1997 Hunter 26, and I'm in the process of installing a charger/inverter and shore power hookup. There are some interesting pages around the web detailing individual electrical projects, including on this superb website, but the one thing I have not been able to pin down is where the boat's ground is located. The wiring diagram in the owner's manual is about as vague as can be - though, given that there only appears to be lighting and a bilge pump installed in the factory, I'm starting to think there is no ground.

In the absence of an existing ground, I'm wondering what the tried and tested through hull ground options are. The centreboard box looks like a prime candidate, but it also looks like a right pain for getting an earth cable to from the battery locker in the stern.

The other interesting looking piece of metal sticking down through the hull is the ballast tank screw... what is on the bottom of that? Is the ballast tank plug a metal plate, or is it fibreglass? It certainly looks like a simple place to get an earth cable to...

I would be very grateful for any pointers in the right direction.

Firewater
 
Aug 9, 2005
825
Hunter 260 Sarasota,FL
Stop where you are and read everything you can find about specialized marine wiring. It's a different breed of cat from home wiring where an earth ground is a fundamental component.

Do not use the ballast tank valve as a grounding plate. Generally speaking tying dissimilar metals together in a boat is also a bad idea due to galvanic corrosion. I'm pretty sure you also don't want your 12v and 120v grounding systems tied together anywhere. I'm no expert but I know you can't just guess on electrical in a boat, people can get whacked so you've done the right thing in asking.

There's a manual for this type of thing but I don't have the name. I'm sure someone will chime in. Be safe.
Mike
 
May 2, 2011
7
Hunter Legend 26 Lough Erne, Ireland
Mike, Bob - thank you for your comments.

I conclude from the foregoing that the Hunter 26 does not have an existing grounding plate or bonding system.

Cheers,

FW
 
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