Cruisers Forum
 


Join CruisersForum Today

Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 04-06-2017, 20:29   #1
Registered User

Join Date: Feb 2017
Location: Shady Side, MD
Boat: Hallberg-Rassy 41
Posts: 147
How to track down stray current

So I'm going through zincs way too fast.

Old boat, same slip = no problem.

New boat = problem.

My immediate neighbors have not changed, but 2 boats down have.

I installed a galvanic isolator on the AC system last spring (and I've verified it's working with a multimeter multiple times).

Still have a problem burning through zincs.

Could anyone enlighten me on the best / most efficient way to start to track down the problem?

This is one of those things where I don't even know where to start.

Well, that's not entirely true, I do know:
Step one: get out multi-meter
...
...
Step X: get out beer.

I need help getting from step one to step X.
mogulskibum is offline   Reply With Quote
Old 04-06-2017, 21:38   #2
Registered User

Join Date: Jan 2015
Location: Back in the sand box , Boat is wintering in Pto Williams....
Boat: Dix 38 pilothouse
Posts: 280
Re: How to track down stray current

Fairly recent thread about this i think

I just bought Ed Shermans Advanced Marine Electrics and Trouble shooting book. He goes into detail on finding stray dc and ac current and explains the procedure really well.
\


Well worth he 30 dollars.

Id bet you have a dc leak somewhere.

I also purchase a silver/ Silver Chloride reference electrode from Boat Zinc's. Shermans book goes into detail on how to use it .

Good luck

LD
lamadriver is offline   Reply With Quote
Old 04-06-2017, 21:56   #3
Registered User
 
UNCIVILIZED's Avatar

Join Date: Jun 2014
Location: Up the mast, looking for clean wind.
Boat: Currently Shopping, & Heavily in LUST!
Posts: 5,629
Re: How to track down stray current

Even if your boat, nor your neighbors hadn't either, the amount of stray current in the water can still change. There's a lot more to it than the variables mentioned. And it is possible to measure the amount of current in the water in various locations, as well as making pretty good educated guesses as to where it's coming from.

There are a few threads on the subject, but I'm up late enough that I can't recall their titles. That said, think about what might happen to the current in the water when say an AC ground wire on a dock finger grows more corroded with time. We've all seen crreeping corrosion in wiring. That, or it could be any one of a hundred other things which can alter the electricity patterns in the area. Makes my head hurt just trying to ponder what but a score of them might be.
__________________

The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.
UNCIVILIZED is offline   Reply With Quote
Reply

Tags
current

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Stray Current Detector Ian R Electrical: Batteries, Generators & Solar 12 27-12-2018 19:02
Stray current and antifoul failure/ delamination joemac4sail Electrical: Batteries, Generators & Solar 7 13-07-2012 15:45
Stray Current MartinMayer Electrical: Batteries, Generators & Solar 32 10-01-2011 04:48
How to Measure Stray Current in the Water erict Electrical: Batteries, Generators & Solar 11 03-12-2010 11:07
Stray Current Corrosion . . . Boracay Electrical: Batteries, Generators & Solar 29 29-09-2010 06:13



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 15:47.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.