I think in today’s world the powers to be don’t want the average individual anywhere near the current potential coming off the pole. Being able to switch that on and off other than at your main panel is asking a lot of most people.
The putty I've got here is gray, we used to use it on mobile homes to seal windows, wiring, and any bolted on install. I think its made by 3M, it used to come in strips in a three pound box.I'd use electrician's putty instead of plumber's putty, if by plumber's putty you mean the stuff you put around a drain before fastening it to the sink. Does the meter box drain? It sounds like the outer sheath of the entrance cable is below the bottom of the box and the water is flowing into the sheath and down into your panel. I'd make sure the meter box drains, and seal around the entrance cable as it leaves the meter box. If the outer sheath of the entrance cable was up a bit from the bottom of the box the water would probably not have a chance to go into it and down into your service panel.
https://www.lowes.com/pd/Gardner-Bender-16-oz-Duct-Seal/4595233
I'd do what's needed and tell the power company to F off... gotta do that sometimes...
Enter your email address to join: