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-   -   Is tinned boat wire necessary? (https://www.sailnet.com/forums/gear-maintenance/329450-tinned-boat-wire-necessary.html)

boatpoker 04-29-2019 09:46 PM

Re: Is tinned boat wire necessary?
 
Quote:

Originally Posted by paulinnanaimo (Post 2051599172)
I respect boatpoker's opinion on these matters and I'm staying out of the debate. However, in this case, I think his photos are very misleading; those awful connections would not be any better if tinned wire had been used.

The point I was trying to make was that corrosion creeps. It will creep and do more damage to non-tinned than tinned.

colemj 04-29-2019 10:28 PM

Re: Is tinned boat wire necessary?
 
I don't see anything in those pictures that has anything to do with the wire itself, and no sign of wire corrosion - or even what type of wire is being used. They really don't have anything to do with the tin/non tin discussion.

Mark

boatpoker 04-29-2019 10:34 PM

Re: Is tinned boat wire necessary?
 
Quote:

Originally Posted by colemj (Post 2051599184)
I don't see anything in those pictures that has anything to do with the wire itself, and no sign of wire corrosion - or even what type of wire is being used. They really don't have anything to do with the tin/non tin discussion.

Mark

Wow, I thought my point was simple and clear. I guess not.
You win.

jephotog 04-29-2019 10:35 PM

Re: Is tinned boat wire necessary?
 
When I rewired my old boat a 74 Ericson. I found so much corrosion in the old wires. So when i did the rewire I did everything up the highest standard I could, knowing the wiring would outlive the boat. It seems the real cost of a rewiring job is in the labor whether you are paying someone to do it or not paying yourself to do it. Why take any shortcuts?

pdqaltair 04-30-2019 12:39 AM

Re: Is tinned boat wire necessary?
 
Quote:

Originally Posted by colemj (Post 2051599156)
... In the US, there really isn't many choices for suitable marine untinned wire. I think that is why it gets such a bad rap - people are using unsuitable or cheap wire and not differentiating between applications. I suspect the costs are similar for good untinned wire and tinned wire.

Mark

Stranded THHN wire is the most common industrial wire in the US and is stocked by Home Depot, Lowes, and every electrical supply house. It is what is pulled through conduit. People may not know to look for it.

https://www.homedepot.com/p/Southwir...5858/203401697

boatpoker 04-30-2019 01:52 AM

Re: Is tinned boat wire necessary?
 
Quote:

Originally Posted by pdqaltair (Post 2051599202)
Stranded THHN wire is the most common industrial wire in the US and is stocked by Home Depot, Lowes, and every electrical supply house. It is what is pulled through conduit. People may not know to look for it.

https://www.homedepot.com/p/Southwir...5858/203401697

ABYC standards cover much more than what has been discussed here, wire type, strand size, oil resistance of the insulation, temperature rating and voltage loss among others. I don't know if Home Depot conductors would meet those requirements.

Of course many have no use for ABYC Standards. To each his own.

celenoglu 04-30-2019 02:31 AM

Re: Is tinned boat wire necessary?
 
The cover of wire is osmotic. If you pass the wire from the bilge, water will osmotically pass to the wire and cause crevice corrosion. It is best to use tinned wire.

colemj 04-30-2019 08:27 AM

Re: Is tinned boat wire necessary?
 
Quote:

Originally Posted by pdqaltair (Post 2051599202)
Stranded THHN wire is the most common industrial wire in the US and is stocked by Home Depot, Lowes, and every electrical supply house. It is what is pulled through conduit. People may not know to look for it.

https://www.homedepot.com/p/Southwir...5858/203401697

Here is HD's price for 100' of THHN - $28.37: https://www.homedepot.com/p/Southwir...5884/204868304

Here is 100' of tinned marine wire - $27.50: 12 AWG Primary Wire Marine Grade Tinned Copper Black 100 ft

Going with untinned wire in the US is not for cost reasons. Outside the US, it most likely is. I suspect anyone using untinned wire in the US, and having problems with it, is using cheaper stuff than THHN.

Mark

colemj 04-30-2019 08:33 AM

Re: Is tinned boat wire necessary?
 
Quote:

Originally Posted by celenoglu (Post 2051599210)
The cover of wire is osmotic. If you pass the wire from the bilge, water will osmotically pass to the wire and cause crevice corrosion. It is best to use tinned wire.

I'm pretty sure this is not true. At least not on less than glacial time scales. Likely, any issue with water will be one of wicking from a penetration, and not osmosis. Could you point to a reference regarding this? If osmosis and crevice corrosion is a concern with marine wire, tinned wire won't prevent it.

Mark

hpeer 04-30-2019 08:58 AM

Re: Is tinned boat wire necessary?
 
My 2006 Yanmar wiring harness has untinned wire.

What about the engine in your boat?


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