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Go Back   SailNet Community > On Board > Gear & Maintenance
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Old 04-16-2010
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Mating Power Cables

I am in the final stages of preparation for the installation of a new electric windlass and have a question on mating power cables of different gauges. The distance of the run from my batteries to the bow dictated a heavy gauge power line in order to reduce the power loss enroute. I chose a 2/0 AWG line (big frigging wire!) to carry the juice forward. Now my delemna...the pigtail coming out of the Lewmar Pro Series 1000 windlass is a lower gauge wire (unmarked but I'm guessing somewhere around a 2 AWG size). How do I go about splicing the two different sizes of wire together?

V/R

Dave
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Old 04-16-2010
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Use two power posts, with the proper size ring terminal on each cable. One for the ground wires and one for the 12 VDC wires.

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Originally Posted by dave6330 View Post
I am in the final stages of preparation for the installation of a new electric windlass and have a question on mating power cables of different gauges. The distance of the run from my batteries to the bow dictated a heavy gauge power line in order to reduce the power loss enroute. I chose a 2/0 AWG line (big frigging wire!) to carry the juice forward. Now my delemna...the pigtail coming out of the Lewmar Pro Series 1000 windlass is a lower gauge wire (unmarked but I'm guessing somewhere around a 2 AWG size). How do I go about splicing the two different sizes of wire together?

V/R

Dave
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Looked it up...not a bad idea. Any ideas on how I go about insulating/protecting the connections at the power posts and on both ring terminals?
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You can get a rubber boot that fits over the power post.
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I like to put a wrap of 3M 88 directly on the bolted connection, 1/2 over lap for each wrap and back quite a bit from the end (like an inch or two). Then a couple wraps of 3M 23 not quite as far as the bottom layer of 88 again 1/2 overlap, and then a wrap or two of 88.....but really a few layers of 88 depending on risk of mechanical wear is likely good enough.
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But this is easier.
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