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Old 26-07-2012, 13:52   #31
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Re: Help! Why am I reading current on my water strainer.

I wouldn't disconnect any neighbor's power cords, even if the Dockmaster gives you permission.

I would instead get a qualified marine electrician on board immediately!

There are tons of technicians there on the bay, especially within a days sail of the Sassafras.

220V will kill you deader than a door nail, especially if you are the route to ground.
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Old 26-07-2012, 14:00   #32
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Yeah I'm with you there. I think I will try moving the boat over to another dock and see of the readings are the same. If so I know it's my boat...Still looking for a reccomendation on a good electrician in the area.
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Old 26-07-2012, 14:17   #33
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Re: Help! Why am I reading current on my water strainer.

DSDman-
I just sent you a PM with recommendations.

Charlie
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Old 26-07-2012, 14:22   #34
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Re: Help! Why am I reading current on my water strainer.

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Originally Posted by DSDman View Post
I need to figure out what needs to be done and then take it in stages.
It will probably take longer to find the problem than to fix it. It wouldn't make sense to just have a diagnosis, especially if you're being charged portal to portal.
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Old 26-07-2012, 15:45   #35
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Re: Help! Why am I reading current on my water strainer.

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Yeah I'm with you there. I think I will try moving the boat over to another dock and see of the readings are the same. If so I know it's my boat...Still looking for a reccomendation on a good electrician in the area.
I was going to mention that. Why don't you try it and see. That way no out of pocket $$$ would need to happen.
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Old 27-07-2012, 06:46   #36
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Re: Help! Why am I reading current on my water strainer.

This was posted on another site a few days ago. It gave me the best explaination of stray current, how to find and correct it and the real dangers of doing nothing. It is over an hour but every minute is informative. I'll be checking my boat this weekend.
Terry

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Old 27-07-2012, 07:10   #37
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Re: Help! Why am I reading current on my water strainer.

With the shore power disconnected can't you use an ohm meter to isolate the problem? If it is only on one breaker you should be able to check the wire from the Hubbell connection to the breaker panel and then downstream from there.
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Old 27-07-2012, 20:35   #38
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Looks simple, Not!

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Old 31-07-2012, 15:14   #39
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So I still have not hired the electrician yet but I have sorted out what was done to the boat on the past maybe. Like I have said before the boat was US made and then took to Europe where it stayed for years. I think it originally had 2, 30 amp 110 breakers. So either circuit could be powered of you only had one hookup to shore power. If you had both then you could throw both breakers get 220 and run the AC units. At some point in the past someone decided they wanted 220 plugs in the boat. So they put in a 50/230 plug and ran a jumper from one 30 to the other. They also rigged the circuit breakers for the plugs to carry the 220 for the plug ins in the boat. I think that is how current is finding it's way to the water. it only happens when the top CB is used. doesn't do it when the single 110 CB is used. I think they are running 110 thru the old neutral wire in the plugs and that may be hooked up with the grounding system. Sound reasonable?
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Old 31-07-2012, 15:20   #40
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Re: Help! Why am I reading current on my water strainer.

Sounds like you have isolated the problem. That should help the electrician locate it quickly.
You might try removing the jumper to see if that solves the problem. I recall a thread either here or sailnet explaining that the european 220 system does not use 2 110 circuits so the plugs are wired differently. That would explain the jumper.
Be careful!
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Old 31-07-2012, 18:26   #41
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Re: Help! Why am I reading current on my water strainer.

I'm going to jump in with something completely different, that likely has nothing to do with your problem, but just might...

Are your A/C and/or Refrigeration water pumps centrifugal pumps? If so, it is possible that they are using a magnetic impeller. Magnetic impellers and the subsequent magnetic field DOES produce voltage. If you have big ones, or more than one running, they WILL give you a "tingle". A decent sized mag pump can produce a couple of volts.

I say this from experience. This is a very common problem in large salt water aquarium systems.

Just a thought.
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Old 31-07-2012, 19:47   #42
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Thanks for thinking outside the box, but thats not it. I had the current before installing the pump. Plus the last time I tried it I got 98 volts through the water strainer with the meter grounded to a screw, and the same grounded to the engine block. Thats quite a tingle!
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Old 17-03-2013, 08:53   #43
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I had forgotten about this thread and I ran across it in one pods my few peaceful moments. As an update, thanks to all who said go hire an electrician. Well that is what I have done. figuring out how the system was wired over the years proved to big a task for me. Basically someone had converted the boat from 110 over to 220 but had never changed any of the circuit breakers. so one leg of the 220 had a circuit breaker and one leg was just ran through the neutral bar. Very unsafe. So I am replacing the entire AC panel so it will be ABYC compliant with both 220 and 110 breakers and some other safety features. And I hired a master electrician to do it. Looks like corn bread and pinto beans for another three months.
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Old 17-03-2013, 10:32   #44
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Re: Help! Why am I reading current on my water strainer.

Thanks for the update. Please post what you and the electrician determine was the core problem.

(And as someone who may yet become a full-time marine electrical specialist, I'd like to send you a steak and a nice bottle of Shiraz to go with those beans )
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Old 25-03-2013, 14:14   #45
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Thanks for the update. Please post what you and the electrician determine was the core problem.

(And as someone who may yet become a full-time marine electrical specialist, I'd like to send you a steak and a nice bottle of Shiraz to go with those beans )
Did you say Delaware? I can bring some good SJ bread and join you for dinner.
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