We have a 'few' cables going from in/out of the coach:)! When we did our Solar, we added two 4 gang size junction boxes, and 1 1/4" conduits, feeding from above a rear bedroom cabinet. (Choose this location for two reasons: 1) Back of this cabinet, our TV Cabinet, we mounted a CB panel so each of our 5 solar panel wire feeds had and individual CB. And then straight shot down to where our Controller is and onto to our battery bank. The second 4 Gang Junction Box, is for antenna cables, and a Power of Ethernet feed to our Wifi Ranger GOAC. (We have a Communications Cabinet next the TV Cabinet, with all of that gear. Including a router, and I fed a weather proof CAT5 cable back up and out from the router, and along the top of the roof, to the front of the coach. 2) The second location of a 2 Gang Junction Box, with 1" Conduit down into the cabinet, is in a cabinet next to the coaches Entertainment Cabinet (Genie, Oppo BluRay, Marantz AVR, ROKU), the mentions weather proof CAT5 feeds down into the cabinet next to the entertainment, 4 way splitter, and I feed the the mentioned components with Ethernet connections. (Reduces and in coach WiFi hop from the WifiRanger GOAC Inside Repeater and Router.)
These Gang boxers are water proof, and when mounted, I used 3M 5200 on and side bead circle and then the all around the outside edge, used standard bead of sealant. Place a 15 pound weight on top of the boxes to allow the 5200 to 'set' well.... Have, knock on woods, never had any concerns with leaks....
That was my approach, due to changes in antennas, MIMO 4X4, Amps, upgrading from olde WFR Elite to Elite AC, etc. - I've opened the rear 4 Gang for Communication related cables, probably 5 times in the last 6 years. All dry inside, and doing well. I've never opened the Solar wire feed 4 Gang, or the Entertainment Cabinet 2 Gang since I mounted them...
If you only one to feed one cable, I know of a few that have used this SS Clamshell without problems. Just caulked the heck out of it when the put them on, and all of them added a cable hold down clamp in front of the entrance to the Clamshell, to keep the cables from moving any and messing up the caulk.
Amazon.com : Amarine Made 2 PCS Stainless Steel Clamshell Vent/Wire Cover...
So those are some of the options for you to consider:)!
Best of luck on your project,
Smitty
04 Allure 31017
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