Next message: Ron Nelson: "T&T: Re: Sliding Door Hardware Source"
> For your boat to damage another electrically they both have to have
> flawed wiring.
Not so. The receiving boat(s) can be correctly done and plugged in and still
be damaged by a boat radiating impressed AC from faulty wiring. Extent of
damage depends mostly on how close the receiving boat is to the radiating
boat. Damage can be very severe and can occur in a small time frame (a day).
Usually it is longer as the AC leakage which is causing the problem is not a
direct short (which would blow a breaker). Damage can include erosion of the
fasteners in a boat in which case damage will be undiscovered for some time.
In a situation at Otter Bay many years ago, the permies noticed an unusually
quick erosion of the zincs in an area of the dock. All fingers pointed to a
relatively junk boat. In fact it turned out to be the boat beside that ... a
very pristine motor sailer. When the M/S was pulled, there was the most
beautiful pattern of copper colour in the bottom paint radiating forward
from the propeller which was bright bright brass colour. When the boat
jockies put an aluminum ladder up on the boat after it was pulled, they got
tingled as they stepped on to the ladder. The boat was radiating 48 volts
AC. An AC line had fallen across the shaft in the bilge.
Richard
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