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Wiring Glands for 12 mm ply


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Sometimes a job that should be as simple as hell turns out to be a pain. I have glands for different size cables but none of them are long enough on the thread to go through 12 mm wood, they are for panel steel or something up to 5mm thick so are no use. Shopping on the net the specs say the thickness of wire but no mention material thickness. Could always bore a hole, poke the wire through and squirt some silicone in there but was hoping for something at least a little bit more up market! 

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If the wiring is visible from both sides ie through a bulkhead then get a couple of stainless penny washers with the hole to suit your wire gauge. Drill a couple of little holes through the washers close to the edge and diametrically opposed to take a couple of small round head screws. Drill a slightly oversized hole through the timber and screw the penny washer to one side. Poke the wire through the washer and timber hole, from the back side apply a squirt of silicone and screw on the other washer. With the washer on each side the silicone is encapsulated and after cleaning up the little bit of filler that's bound to ooze out the finished job doesn't look too bad.

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Try getting a spade bit that is oversized for the gland size and drill the thickness of the ply down to suit the gland, - do it on a test piece of ply - suitable for bulkhead

Or of multiple wires in on location do an insert - bulkhead again.

 

Or one of the other suggestions.

 

Is the cable going through a water tight bulkhead / deck? Does it need to be sealed?

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Ok,

Cannot remember the boat but it had a goose neck tube close to the mast - cable came down then turned up into the gooseneck.

 

Have seen many leaks with cable glands that were installed vertically - normally when the get old...

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Gee what a handy place to know for all sorts. Hi-Q   Thanks for that. It  never came up with internet searchers so for all its cleverness we still have to rely on old fashioned referrals.  They appear to have some glands with 18mm thread for 10mm wire so should do the job. The 2 washer trip would look pretty cool but am limited on access on the inside for drilling etc  but might use that elsewhere.  

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