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Author Topic Next Topic: water in oil-like coffee very dark,my 1999 gs 249  

firstlight

RO# 16749

Posted - Dec 10 2019 :  09:25:01  Show Profile  Reply with Quote
I haul vessel for season, 36' 2006 Tiara Open, and noticed a green halo around a number of thru-haul fittings. I checked all green ground wire leads to and from fittings all seen connected and clean. Zinc have normal wear?
Thanks appreciate some input

Homeport: City Island New York

pdecat

RO# 842



Posted - Dec 10 2019 :  10:23:21  Show Profile  Reply with Quote
could be stray current from your dock. Check the power cord and the input socket for corrosion bridges connecting the terminals.

Bruce



Homeport: Gulf Coast FL Go to Top of Page

Brite Idea

RO# 12714

Posted - Dec 14 2019 :  10:44:06  Show Profile  Reply with Quote
I get it also but it washes off with a little On Off so no big deal? I see no pitting or any obvious damage so maybe it's a normal reaction?


Homeport: Copiague, N.Y. Go to Top of Page

pdecat

RO# 842



Posted - Dec 14 2019 :  11:16:37  Show Profile  Reply with Quote
Current would cause a halo where the paint is removed.

Bruce



Homeport: Gulf Coast FL Go to Top of Page

Sandy

RO# 1159

Posted - Dec 15 2019 :  19:36:15  Show Profile  Reply with Quote
Firstlight- What you describe may be indicting your thru-hull fittings are acting as sacrificial anodes.

These may help:
https://www.boatus.com/magazine/assets/pdf/putting-corrosion-to-the-test.pdf

https://www.boatzincs.com/corrosion-reference-electrode-specs.html?gclid=EAIaIQobChMIrI7uvvS45gIVDhgMCh3zNgs1EAMYAiAAEgKq8vD_BwE


Sandy

Homeport: The Vineyard Go to Top of Page
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