I am using your basic 30a range cord you can buy at Home Depot. I have my elements installed into my kegs but need a way to make a good seal where the wires go into the junction box. The box has 1/2" threaded holes in it and I can fit the wires through the holes by themselves. The problem is I can't fit them in there with any kind fitting. The only idea I have come with is to put them in there and wad a bunch of silicone around them. I don't think I would like the way that would look and I don't know how well it would stay. Any ideas, how have others used these cords?