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- Jul 18, 2011
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Unusual thing is happening to 1 of the electrical terminal posts on my boat
Boat = Formula F-242SS, Mercruiser 7.4L, Bravo1, Mercathode system, SS propeller
Dual Battery set up with Group 24 batteries. The batteries are wired to a Perko 4 position battery switch (OFF, #1, Both, #2) normally left OFF.
Each battery has leads that go to a dual terminal post on the transom. (2 posts per unit) so, there is a '+' and a '-' lead on each terminal post unit. From there, they lead to the Perko Battery switch. This is all original Formula set-up.
The '+' terminal post on the PORT side only, has disintegrated twice over the past few years. It takes about 2 years for the terminal post to disintegrate. The terminal post is a 3/8" stainless steel bolt, and it turns black and produces a lot of rust, then eventually breaks off from the mounting block. The other 3 posts are fine.
I am figuring it is some sort of corrosion going on that is being induced or aided by the electrical system, or something. Beyond that I am not sure what is going on.
Anyone seen this sort of thing happen before, or would know the cause?
Thanks in advance.
Boat = Formula F-242SS, Mercruiser 7.4L, Bravo1, Mercathode system, SS propeller
Dual Battery set up with Group 24 batteries. The batteries are wired to a Perko 4 position battery switch (OFF, #1, Both, #2) normally left OFF.
Each battery has leads that go to a dual terminal post on the transom. (2 posts per unit) so, there is a '+' and a '-' lead on each terminal post unit. From there, they lead to the Perko Battery switch. This is all original Formula set-up.
The '+' terminal post on the PORT side only, has disintegrated twice over the past few years. It takes about 2 years for the terminal post to disintegrate. The terminal post is a 3/8" stainless steel bolt, and it turns black and produces a lot of rust, then eventually breaks off from the mounting block. The other 3 posts are fine.
I am figuring it is some sort of corrosion going on that is being induced or aided by the electrical system, or something. Beyond that I am not sure what is going on.
Anyone seen this sort of thing happen before, or would know the cause?
Thanks in advance.
