Brentathon
Petty Officer 1st Class
- Joined
- Dec 29, 2009
- Messages
- 397
Always check continuity with a multimeter, especially when first installing.
You’d be surprised how often you WON’T have a good electrical bond, without cleaning, buffing, scraping the contact surfaces.
I also use a dremel and wire wheel in bolt threads. The white zinc oxide that often remains on surfaces is not a good conductor.
Despite all this, I still occasionally have an occurrence of a poor bond, which is indicated by the lack of material loss and a brownish coating on the outer surface of the zinc. You can likely tell which zinc didn’t have a good bond and wasn’t part of the galvanic protection.
You’d be surprised how often you WON’T have a good electrical bond, without cleaning, buffing, scraping the contact surfaces.
I also use a dremel and wire wheel in bolt threads. The white zinc oxide that often remains on surfaces is not a good conductor.
Despite all this, I still occasionally have an occurrence of a poor bond, which is indicated by the lack of material loss and a brownish coating on the outer surface of the zinc. You can likely tell which zinc didn’t have a good bond and wasn’t part of the galvanic protection.