OKAY! I agree tinned wire is an excelent way to prevent corrosion.
"Pratical" is (in this case) another situation. For many years I work for a coal mining company. The wiring for the instrumentation I was responsible for was often flooded with highly acidic water. ( It was akin to sulfuric acid) To combat this nemisis I used nonconductive, self-vulcanizing tape to insulate both solder and cripmed connections. (The wire sizes ranged from 22 gauge to 12 gauge.) Nothing is 100% fool proof, but but my equipment had an availability of 99.97% - 24/7.
Guess what I use on my boat.
The corosion problem you found on your boat may be long term capilltary action. It could be the wire insulation is okay , but the micro spacing between the wire strands has allowed the enviorement to move into the cable, then inch it's way through the length of the cable.
[Also, the PS issue should be addressed to PS.]
Last edited by Duke 7184; 06-01-2008 at 08:52 PM.