Next message: Bob Austin: "T&T: RE: Welding cable"
Arild says (in part):
I agree with what Rich says. However there is one possible instance wher
tinned wire is superior. On twin engined boats the should be a heavy cable
joining the two engine
blocks together. This is necessary for when an emergency start requires
joining or crossing
the start battery banks together.
About the only possible location for this cable is to run it underneath the
floor boards installed between the two engines.
This places the cable very low in the bilge and if th eboat has any water
in the bilge this cable wil become submerged from time to time.
PVC insulation is NOT impervious to water when submerged for any lenght of
time.
REPLY:
No real disagreement there, but....As a wooden boat owner, I am no stranger
to a "damp bilge," but even I found a place under the engine room deck
plates to run the jumper cable between the engines that is dry 99.999999% of
the time. In fact, I think outside of sinking or nearly so, the only water
that gets on my cable is wash water when I perform my annual bilge mucking.
As for flexing, I support my cables about every foot and expect to never see
any split insulation. Arild speaks with knowledge based on seeing a lot
more boats and sorry conditions than I do, but I am sure that my battery
cable installation is as good as I have ever seen on any boat I have
visited. Anyone following my procedures for installation should be quite
well off, battery cable wise.
Rich Gano
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