Originally Posted by amazinglarry104
Cool, so I could just wire this inline with the power cord and it would essentially be the same as the extension cord with GFCI?
Yes. It would be best to find out what your friend has available for power (breaker size, wire gauge, number of wires, receptacle type, etc.). You will have to match plug and receptacle, and whether his wiring includes a true ground will determine how to wire the spa panel. Ideally, he has a 30a breaker, with H-H-N-G going to a NEMA 14-30 receptacle, but let us know the reality and we can help.