The electrician did a great job (following my instructions) and the result is a clean install.
Unfortunately, after about two days of operation the hot tub stopped heating. After some investigation and failed attempts at repairs by me, Chrissy discovered what appears to be a blown relay on the heater control board. We are going to try to replace it and see what happens.
I am too depressed to post pictures now, but I will try to put some up soon.