I have a 30 amp RV outlet in my garage that I want to use to power a couple of 10 amp battery chargers. The battery chargers have 15 amp plugs.
I'm thinking of getting a 10 gauge copper cable, putting a TT-30P on one end, and a metal junction box with a strain relief on the other. The box would have two 15 amp outlets, each with their own 15 amp circuit breaker. Then I could set the box on my workbench and plug everything in.
I'm not sure how to fit the breakers in the box yet. I'm hoping to find a 3 gang cover plate that's blank in one position and has holes for outlets in the other two spots. Then I could put panel mount breakers in the blank part of the cover.
Would this be safe and legal? Is there an existing product that would do the same thing for a reasonable price?
This question is similar to this one: Safe breakout for an RV outlet. The main difference is that I'm doing everything indoors.