Hi TC,
Honestly not sure this is going to work for you as you are dealing with Powder Coating and not paint. Also don't run the reel through the bath as you'll change the structure of the steel by introducing Hydrogen Embrittlement to it and as such then rendering it pretty useless and it could even shatter during the grinding process. Blasting is the best way for reels.
As far as the electricity in the bath is concerned all you have to do is connect all the anodes in series as the loop is then created with the job hanging in the bath and the electrons flowing from the job to the anodes.
Cheers,
BB.
