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Unread 12-21-2011, 08:29 PM   #1
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Default Battery/Wires Grounding Out On frame?

Hey Guys Merry Christmas,

Stupid question... I have had some radio issues over the last year and I just got my Sony marine radio repaired under warranty. I'm going back through everything to make sure it's wired correctly. I have a reducer that run's off 2 of my 8volt's and it reads 13 volts so that part is good. My question is.. If I totally isolate a battery nothing conected to it and I use a multi meter to check the DCV from the positive post then grounding it on the frame should it read 0? Analog meter no needle movement, A friend of mine says my 03 series 48 volt cart should be reading nothing because the alum frame is not a ground?

Thanks,
Steve
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Unread 12-21-2011, 09:06 PM   #2
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Default Re: Battery/Wires Grounding Out On frame?

You never want to ground anything to the frame in a cart, all grounds go to the battery -/neg post NOT the frame
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Unread 12-21-2011, 09:06 PM   #3
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Default Re: Battery/Wires Grounding Out On frame?

Your friend is correct, Electric GC do not use a frame ground. Everything is on a 2 wire system.
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Unread 12-21-2011, 09:07 PM   #4
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Default Re: Battery/Wires Grounding Out On frame?

Crazy,

I'm reading 8 volts touching the battery holder rod nut then touching the frame?
Steve
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Unread 12-21-2011, 09:08 PM   #5
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Default Re: Battery/Wires Grounding Out On frame?

Your battery tops are wet?
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Unread 12-21-2011, 09:13 PM   #6
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Default Re: Battery/Wires Grounding Out On frame?

Im in Ga and it's been raining all day. The cart is dry in the garage. I'm getting some volt reading 8+ on all the batteries and the rod battery holder nuts touching the frame?

Steve
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Unread 12-21-2011, 09:56 PM   #7
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Default Re: Battery/Wires Grounding Out On frame?

Did anyone else do any mods to this cart before you got it? Sounds like someone ran a frame ground.
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Unread 12-22-2011, 12:11 AM   #8
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Default Re: Battery/Wires Grounding Out On frame?

Quote:
Originally Posted by caokgafamily View Post
Crazy,

I'm reading 8 volts touching the battery holder rod nut then touching the frame?
Steve
i think you have some galvanic cell action going on there.
-sj
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Unread 12-22-2011, 06:54 AM   #9
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Default Re: Battery/Wires Grounding Out On frame?

Thanks for the input guys,

A couple of time I've added to much water to the bats, so they bubbled over. My alum frame under the bats is pretty corroded. My question is: Is this going to damage anything? that I'm getting volt readings from grounding the frame.
Steve
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Unread 12-22-2011, 07:11 AM   #10
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Default Re: Battery/Wires Grounding Out On frame?

Quote:
Originally Posted by caokgafamily View Post
Hey Guys Merry Christmas,

Stupid question... I have a reducer that run's off 2 of my 8volt's and it reads 13 volts so that part is good. My question is.. If I totally isolate a battery nothing conected to it and I use a multi meter to check the DCV from the positive post then grounding it on the frame should it read 0? Analog meter no needle movement, A friend of mine says my 03 series 48 volt cart should be reading nothing because the alum frame is not a ground?

Thanks,
Steve
The simple answer to your question is "YES", it should read "0" . . . as stated, the frame is NOT a ground for anything on a CC . . . all grounds for anything are grounded back to a negative terminal, one way or another . . .
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