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Old 06-19-2017, 06:07 PM   #1
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Default boat electrolysis

Ive never dealt with this so I'm not sure where to start. My customer calls and says they have a boat that is eating zincs way to fast. The electrolysis is out of control.
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Old 06-19-2017, 06:12 PM   #2
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Add more larger zincs.




What is around where he is docking the boat?
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Old 06-19-2017, 06:16 PM   #3
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Ive never dealt with this so I'm not sure where to start. My customer calls and says they have a boat that is eating zincs way to fast. The electrolysis is out of control.
the info you posted is pretty breif and few details is missing.,,

did that vessel do have shore power on that time ? if so you will need to inspect the electrical system very carefully on that.

for the dc side of vessel check the common bonding from the batteries to the mains ( engines ) then go from there.,

Check the generator connection too.
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Old 06-19-2017, 06:21 PM   #4
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the info you posted is pretty breif and few details is missing.,,

did that vessel do have shore power on that time ? if so you will need to inspect the electrical system very carefully on that.

for the dc side of vessel check the common bonding from the batteries to the mains ( engines ) then go from there.,

Check the generator connection too.
This is the info I need. They gave me no info and I did not know what to ask or where to test. Im not a boat guy in ANY way.
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Old 06-19-2017, 06:36 PM   #5
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the info you posted is pretty breif and few details is missing.,,

did that vessel do have shore power on that time ? if so you will need to inspect the electrical system very carefully on that.

for the dc side of vessel check the common bonding from the batteries to the mains ( engines ) then go from there.,

Check the generator connection too.
DC current around the hull is a huge problem, shore power really shouldn't be a source of a problem.
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Old 06-19-2017, 07:46 PM   #6
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DC current around the hull is a huge problem, shore power really shouldn't be a source of a problem.
From what I read, It could be actually
Apparently, its pretty common

Theres an isolator you can buy if it is docked and using shore power.

Warmer water and pollution will also speed up the deterioration








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Old 06-19-2017, 07:48 PM   #7
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USE A CONDOM

Over 90% of our customers electrolysis problems are created by the shore power connection. You could theoretically disconnect the ground connection in the shore power and avoid electrolysis (and in some cases this is a solution) but ABYC regulations require the AC ground be connected to the DC ground so an electrical fault on the boat won't electrocute swimmers in the vicinity.

When you connect your underwater metal to the shore power ground you have "bonded" with every other boat on the docks who have the same connection. Now electrolysis currents are free to flow anywhere in the marina and it only takes one boat with a 12 volt DC leakage to eat up every boat within a wide radius even though the offender has zero electrolysis evidence.

Your protection is a Galvanic Isolator in the ground connection of the shore power lead. You don't have to purchase ours (although they are typically less than 1/2 the price of our competitors). Any Galvanic Isolator that meets AYBC specifications will do - they are not rocket science and extremely reliable








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Old 06-19-2017, 07:49 PM   #8
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From what I read, It could be actually
Apparently, its pretty common

Theres an isolator you can buy if it is docked and using shore power.

Warmer water and pollution will also speed up the deterioration








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In what I've seen more boats docked without shore power eat more zincs based on what is going on where they are docked, ie: next to pumps and other electrical equipment.
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Old 06-19-2017, 07:53 PM   #9
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In what I've seen more boats docked without shore power eat more zincs based on what is going on where they are docked, ie: next to pumps and other electrical equipment.
This 11yr old kid died over the weekend here swimming in a lagoon....im guessing a back bay somewhere

She touched an energized metal bar on a boat lift and got electrocuted!

There maybe something too what your saying.


http://www.nj.com/ocean/index.ssf/20...ment_wher.html



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Old 06-19-2017, 08:37 PM   #10
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This 11yr old kid died over the weekend here swimming in a lagoon....im guessing a back bay somewhere

She touched an energized metal bar on a boat lift and got electrocuted!

There maybe something too what your saying.


http://www.nj.com/ocean/index.ssf/20...ment_wher.html



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I've done underwater boat repairs going back many years. If you think some of the stuff posted here in the Gems thread is bad just look at what boat owners do on their docks.....

The idiots that sell them the supplies and give advice are boat shop counter guys that think if they can power up and radio or fish finder they can wire up dock accessories.
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