I just realized that my 120 V ground and 12V negative are connected to different parts of the engine frame. Is that supposed to be?? I highly doubt it. I am considering moving the 120V ground to an electrode on the ER floor, removing any connectivity to 12V neg. Any thoughts?
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Thread: 120 V ground and 12 V negative
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01-25-2010 02:32 PM #1
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120 V ground and 12 V negative
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01-25-2010 06:46 PM #2
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Re: 120 V ground and 12 V negative
The way they're connected may not be right but all grounds 12V 32V and AC are bonded together in the system.
Brian
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01-26-2010 09:57 AM #3
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Re: 120 V ground and 12 V negative
Check this thread...the first half dozen posts describe the proper connection of negatives and bonding....
http://www.samsmarine.com/forums/sho...hlight=bonding
A potentially (pun intended) key point is that ac green ground, dc negative, and bonding are normally brought together at a single point in our older boats of all types.
There is a related but different, more modern means, for SEPARATE lightning protection wiring. I have posted about this so if you are interested and it's not in the above thread, you should be able to searc and find it.Last edited by REBrueckner; 01-26-2010 at 10:09 AM.
Rob Brueckner
former 1972 48ft YF, 'Lazy Days'
Boating isn't a matter of life and death: it's more important than that.
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Re: 120 V ground and 12 V negative
Ground is ground. They're both connected. The problem is when there is more than one point of bonding and ground connected.
Doug
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