{Stus-List} ground fault

Conrad B Falkson falkson at sympatico.ca
Fri Jun 20 06:11:14 EDT 2008


Thanks.

How do i go about finding the 'leak' once I have established that there is
one?

 

Conrad

Take Five I

C&C 37 1984



 

  _____  

From: cnc-list-bounces at cnc-list.com [mailto:cnc-list-bounces at cnc-list.com]
On Behalf Of Jim Watts
Sent: June 19, 2008 09:07
To: cnc-list at cnc-list.com
Subject: Re: {Stus-List} Do WE Need a Zinc on the Prop Shaft Strut?

 

All you need for that is a cheap digital meter (used to call them VOM,
volt/ohm meter). In the Ohm position, stick one probe into the ground socket
and the other into either of the other two slots on the outlet. If you find
low or zero ohms, you have found the problem.

Make sure you aren't plugged into shore power for this, btw. 

 

Jim Watts
Paradigm Shift
C&C 35 Mk III

----- Original Message ----- 

From: Conrad B <mailto:falkson at sympatico.ca>  Falkson 

To: cnc-list at cnc-list.com 

Sent: Thursday, June 19, 2008 5:29 AM

Subject: Re: {Stus-List} Do WE Need a Zinc on the Prop Shaft Strut?

 

Will this help solve my next problem? I seem to have a ground leak in the
110 shore power system and have no idea how to start looking for it. If I
connect a 3 pin plug into any of the 110 outlets on the baot it trip the
groundfault ashore.

Conrad
Take Five I
C&C 37 1984


-----Original Message-----
From: cnc-list-bounces at cnc-list.com [mailto:cnc-list-bounces at cnc-list.com]
On Behalf Of Russ & Melody
Sent: June 18, 2008 14:27
To: cnc-list at cnc-list.com
Subject: Re: {Stus-List} Do WE Need a Zinc on the Prop Shaft Strut?

Hi Fred,

At our Yacht Club we have a test meter similar to this:
http://www.sterling-power.com/products-system-test.htm

We use it to monitor the protection of steel pilings, but it is also 
available for members to use.


It's basically a calibrated millivolt meter with an expensive cell/plate 
that goes into the water. Take the other lead to the metal you're worried 
about and observe the difference in potential (read from the scale: safe -> 
bad)

         Cheers, Russ
         35 mk-1

At 08:41 AM 6/18/2008, you wrote:
>Is there away to measure electrical current that may be attacking my prop?
>What 2 points would I measure across and how sensitive a meter would I
need?
>
>Fred Hazzard
>S/V Fury


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