Use the gray electrical conduit instead of schedule 40 Neil 1982 C&C 32
Neil Andersen 20691 Jamieson Rd Rock Hall, MD 21661 484-354-8800 ________________________________ From: CnC-List <cnc-list-boun...@cnc-list.com> on behalf of Nathan Post via CnC-List <cnc-list@cnc-list.com> Sent: Tuesday, April 7, 2020 7:12:32 PM To: cnc-list@cnc-list.com <cnc-list@cnc-list.com> Cc: Nathan Post <nathan8...@gmail.com> Subject: Re: Stus-List securing cables in mast Thanks Josh, Yes a windex light, masthead tricolor/anchor light and NEMA2000 wind instruments are all part of the plan. Deck and steaming lights at the spreader along with the radar too. Hadn’t considered a wifi antenna but I have plenty of plenum cat6 around so I’ll include that - good suggestion. I take it that you would attach the conduit to the front of the mast? I was visualizing of tucking it toward the back. I’ll need to check how much space there is around the spreader support bar. There are also through bolts where the stays attach too. The schedule 40 pvc conduit That is readily available is probably overkill for this application and the joints add thickness. Need to see what else I can find... For bonding, currently the mast sits in an aluminum step that has a keel bold going through It with a washer and nut under the center of the mast. Is that sufficient? Would you recommend a ground strap in there too? My DC system is bonded to the engine but not to the keel as far as I know. I don’t use up zincs too quickly so I haven’t been tempted to change anything. Thanks, Nathan On Apr 7, 2020, at 6:50 PM, Josh Muckley via CnC-List <cnc-list@cnc-list.com> wrote: Conduit is the only professional way to go. You will be limited by the space in front of the spreader bars that support the spreaders. I would use standard thin wall pvc no needs for anything thick and maximize the diameter. If you're going to do it then make it the best you can for the next guy... Who knows it might be you! Yes a second conduit makes sense especially if you are ever going to have a mast mounted radar. This is exactly how the yard did my mast when they rebuilt it. While you are in there consider spreader lights, long range wifi (cat-6), windex light, and NMEA2000 You may also want to evaluate the current bonding situation for the mast. I can give additional pointers or advice if desired. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Tue, Apr 7, 2020, 18:30 Nathan Post via CnC-List <cnc-list@cnc-list.com<mailto:cnc-list@cnc-list.com>> wrote: All, As one of my boat projects this spring I am replacing the electrical wiring in my mast. The mast is currently down (horizontal) so now is the time to do it. I want to secure the wires in the mast, in particular to reduce noise (when rocking at anchor). Wisper is a 1981 C&C 34 with a keel stepped mast and 5 internal halyards in addition to the wires. The cables are for wind instruments, masthead and steaming lights, VHF coax, and radar (power and communication) so it will be a substantial bundle with a separate drop at the spreader. The two approaches I am considering are: 1) Creating a bundle (wiring harness) of the cables and placing 3 large cable ties on the bundle at perhaps 2 or 3 foot intervals with the tails sticking out at 120 deg angles that will bend over and press against the mast and keep the cables in the middle. I would use Panduit metal barb outdoor zip ties which are robust, smooth edged, and long lasting. 2) Installing a PVC conduit (using rivets?) with a feeder line for the cables and then running the cables through it. There is support of both methods in various forums online. Cable ties are definitely the simpler method. The main advantages to the conduit that I see is being able to run an additional wire through it at a later time potentially with the mast up. Also I might be able to run cables from top to bottom so that a large connector can remain preinstalled on the top (for example for the radar unit) rather than needing to feed everything in to the bottom at once and then fishing the ends out the various small holes in the mast and reattaching connectors. The disadvantage is the effort required to install it and the additional holes I would need to create in the mast. I am also unsure how quiet either solution would be and the relative chance of tangling or extra friction or wear on a halyard although most info on-line seems to indicate that the conduit is the better choice for that. With the conduit approach, I am also debating if two smaller conduits - one to the spreader and one to the mast head - would make more sense than having a hole in large conduit at the spreader location. Has anyone done either of these securing approaches? What are your thoughts on the success? How much does it silence the cables? Is the effort for the conduit worth it? Thanks, Nathan Post S/V Wisper 1981 C&C 34 CB Lynn MA, USA _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray _______________________________________________ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
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