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Also, consider doing the "rough-in" work on your own. For my first installation, I installed the cut-off box outside, ran conduit to the tub with 4 wire, ran conduit and 4 wire to the panel and got everything "in position" for the electrician. When the electrician came out he checked the "rough-in" generally, installed the breaker, hooked up the "cut-off" and installed the 4 wire to the tub. In all, he charged me $150 for a two hour job.Good luck!Drewski