Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-18-2018, 08:12 PM   #1
rwc
Lieutenant
 
Join Date: Sep 2017
Location: Vancouver, Canada
Posts: 65
Default Zinc wastage and electrical leaks

I noticed yesterday that my zincs, which were replaced about two months ago already have noticeable deterioration (maybe 15%). My neighbour said that the water in the marina frequently tests high for voltage due to people having grounding issues leaking electricity into the water.

Is there a way for me to make sure it's not me that's leaking the electricity? I'd at least like to try and make sure I'm not the source of the problem...
__________________

rwc is offline   Reply With Quote
Old 07-18-2018, 08:32 PM   #2
Admiral
 
Phillbo's Avatar
 
Join Date: Mar 2012
Location: Arizona
Posts: 1,011
Default

It's easy. Boats that are leaking electricity typically experience strange rumbling noises when under way as well...

Don't swim in that marina.
__________________

Phillbo is offline   Reply With Quote
Old 07-18-2018, 08:40 PM   #3
rwc
Lieutenant
 
Join Date: Sep 2017
Location: Vancouver, Canada
Posts: 65
Default

lol.

Thanks Phillbo. I asked the same neighbour who told me about the electrical leaks if he swam in the marina to check things. My plan was to go tug on random things to see if anything was loose that shouldn't be loose.

His response was "Sure! I've got a mask right here if you want to borrow it. But... make sure you wash yourself off with the hose after - there are things in there..."

Electricity notwithstanding, I'm no longer terribly eager to go in the water.
rwc is offline   Reply With Quote
Old 07-18-2018, 10:14 PM   #4
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 6,443
Default

Quote:
Originally Posted by Phillbo View Post
It's easy. Boats that are leaking electricity typically experience strange rumbling noises when under way as well...

Don't swim in that marina.
Say what!
__________________
Mike
mmwjr is offline   Reply With Quote
Old 07-18-2018, 10:15 PM   #5
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 6,443
Default

Quote:
Originally Posted by rwc View Post
lol.

Thanks Phillbo. I asked the same neighbour who told me about the electrical leaks if he swam in the marina to check things. My plan was to go tug on random things to see if anything was loose that shouldn't be loose.

His response was "Sure! I've got a mask right here if you want to borrow it. But... make sure you wash yourself off with the hose after - there are things in there..."

Electricity notwithstanding, I'm no longer terribly eager to go in the water.
There is a probe you can buy that connects to a DVM, you lower it into the water to measure stray currents. The marina wiring could be faulty as well.
__________________
Mike
mmwjr is offline   Reply With Quote
Old 07-18-2018, 11:54 PM   #6
rwc
Lieutenant
 
Join Date: Sep 2017
Location: Vancouver, Canada
Posts: 65
Default

Quote:
Originally Posted by mmwjr View Post
There is a probe you can buy that connects to a DVM, you lower it into the water to measure stray currents. The marina wiring could be faulty as well.
So nothing I can measure on the boat then to see if it's mine? I was thinking maybe I could measure differential between draw on the main and the charger with everything else off, but I have no idea if a leak would be significant enough to register or not.
rwc is offline   Reply With Quote
Old 07-19-2018, 02:23 AM   #7
Admiral
 
mmwjr's Avatar
 
Join Date: Feb 2012
Location: Essex, Maryland
Posts: 6,443
Default

Measure all metal that is in contact with the water on the millivolt scale to DC ground.
__________________
Mike
mmwjr is offline   Reply With Quote
Old 07-19-2018, 02:42 AM   #8
Admiral
 
Phillbo's Avatar
 
Join Date: Mar 2012
Location: Arizona
Posts: 1,011
Default

Without knowing what kind of boat you have I will still venture to guess the it's the larger boats in the marina that are the cause of the electrical charge... In my marina we have hundreds of 75' + boats that bleed electricity like crazy.
Phillbo is offline   Reply With Quote
Old 07-23-2018, 02:02 PM   #9
Moderator

 
Join Date: Apr 2008
Posts: 4,167
Default

Keep in mind that stray current electrocution from swimming is a concept around FRESHWATER marina's, not saltwater. You should be able to detect small amounts of stray current using a good multi-meter. The source can be anything from ungrounded boats, to shore cords in the water.
__________________

shrew is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 06:41 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2018, vBulletin Solutions, Inc.