I saw a hydro massage bathtub on a rough inspection the other day. The motor was all plastic, no metal on it, even the mounting plate was plastic and it had a 3 prong plug. There was no place for a bonding wire, but it didn't say double insulated. Does this need to be bonded? I told the GC that for the final inspection, I want the EC to be there and with the book to check the Manufactures requirements.