dento29
Active Member
Silly question but can normal domestic 1.5mm 17A single core cable be used on for 12v wiring system... and if not why?
Many thanks
Many thanks
Another electrical question...sorry!
- Thread starter dento29
- Start date
exfinnsailor
Well-Known Member
Copper corrodes when it comes in contact with sea water it goes green / black .. Marine grade wiring is tinned copper so it does not corrode .. Had some light flex that was fitted on the old boat .. after about a year it was corroded about 300 mm from the end .. Also explains why its expensive .. The last thing you want is failed or failing wiring ..
halcyon
Well-Known Member
No
The flexing of the boat will break the wire, plus the colour /type indicates mains and someone may do so.
This was found out by the builders in the 1980's when they tried fitting mains to production boats for the first time using twin and earth.
Brian
The flexing of the boat will break the wire, plus the colour /type indicates mains and someone may do so.
This was found out by the builders in the 1980's when they tried fitting mains to production boats for the first time using twin and earth.
Brian
A
Anonymous
Guest
As finn sailor says, corrosion is a major issue. I have had terrible trouble over the years and curse out loud when I find the boatbuilder or PO has wired in untinned. If you mean non-stranded cable then there is another problem...solid cores of copper tend to work-harden with vibration. Fine for a house but for many applications in a boat totally unacceptable.
bikedaft
Well-Known Member
beg to differ, most of the extra wiring we have put into a halcyon clipper 27 (ie there was not much to start with) has been single core copper about that dia. no corrosion problems (single core). sure once it is bent to fit the shape of the boat, you shouldn't bend it again, but its all 30 years old now with no problems at all unlike multi strand.
oh and our engine is bolted directly to the hull for maximum vibration, so if it was going to work harden i'm sure it would have done it by now. it is all clipped on securely, maybe this helped.
we have had problems with any multistrand wire, doubt they were tinned. the corrosion is only on the surface of the metal, hence why we favour the single strand. and all because it was left over from a house rewire...
oh and our engine is bolted directly to the hull for maximum vibration, so if it was going to work harden i'm sure it would have done it by now. it is all clipped on securely, maybe this helped.
we have had problems with any multistrand wire, doubt they were tinned. the corrosion is only on the surface of the metal, hence why we favour the single strand. and all because it was left over from a house rewire...
RAI
Well-Known Member
Depends how much current you want to push down it. Yes, tinned copper wire is preferable for corrosion resistance, but if you want it to carry amps to your windlass, you may find tinned wire hard to come by and 1.5mm2 far too small.
VicS
Well-Known Member
You asked this question on another (very poor) forum AND you asked it there first. TRAITOR!
However so that others can comment or benefit from the links I gave in my reply there it is here:
http://practicalboating.com/forums/showthread.php?t=3695
However so that others can comment or benefit from the links I gave in my reply there it is here:
http://practicalboating.com/forums/showthread.php?t=3695
dento29
Active Member
..so poor, what are you on it for then????
Forums are points of view mainly...
so better to get as many as possible, then make your own mind up!!
The cable as many strands 8-12 not one and will be housed in T2 conduit to keep dry... wrote that on the other site as well!?!
Forums are points of view mainly...
so better to get as many as possible, then make your own mind up!!
The cable as many strands 8-12 not one and will be housed in T2 conduit to keep dry... wrote that on the other site as well!?!