Sounds like the PO may have been misinformed, or overly cautious, and figured 
more is better.  

 

Someday will someone explain to me the concept/theory of a ground loop?  I’m 
looking at you Fred.

 

 

From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of Ken Heaton 
via CnC-List
Sent: Thursday, April 07, 2016 5:59 PM
To: cnc-list
Cc: Ken Heaton
Subject: Re: Stus-List Ground loop?

 

Did the boat ever have a shortwave radio?

 

Was a previous owner afraid of a lightning strike?

 

Just guessing.

 

Ken H.

 

On 7 April 2016 at 18:20, Ryan Doyle via CnC-List <cnc-list@cnc-list.com> wrote:

Hey everyone, 

I am in the home stretch of re-wiring my entire boat.  The wiring was in 
frightening shape when I bought it back in October - much of it was corroded 
and probably original, and there were numerous "bad fixes" that I didn't like 
the looks of.  So, I ripped it all out and started anew with a whole bunch of 
Ancor marine wire, a BlueSea panel, BlueSea fuse blocks, and went about 
re-wiring.

All negative wires connect back to the nut at the back of my A4 motor, which is 
also connected to my battery negatives.  All good.

However, there is one large gauge (maybe 10 gauge?) old wire going from the nut 
on the back of my A4 to a nut attached to a metal plate that is attached to the 
outside of the hull.  This metal plate is located slightly forward and to 
starboard of the front of the A4.  Another wire coming from the nut over this 
metal plate is also connected to a keel bolt.

I don't see this plate or wire on the original C&C wiring diagram for the boat. 
 And from what I know, having more than one negative point outside the hull 
will create a ground loop.  

Any thoughts on why someone did this?  

Thanks, 

Ryan

Nobody's Bargain

1976 C&C 30 mki

New York

 


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