5030TINKERER

Just as a follow-on - I measured my wire length from my main electrical service panel and came in at 34 feet. From http://www.calculator.net/voltage-drop-calculator.html?material=copper&wiresize=3.277&voltage=110&phase=ac&noofconductor=1&distance=34&distanceunit=feet&amperes=50&x=64&y=13, it would seem that the electrical carrying ability of #10 wire is greater at this distance than #6 wire has at 100 feet. The Gleam installation manual calls for #10 wire for distances up to 100 feet.

My house is pre-wired for a spa. Trouble is, that the wiring is 6/3 and behind sheetrock (of course it is). With 6/3 comes 6 gauge hot in red, 6 gauge hot in black, a 6 gauge neutral, and a bare 10 gauge ground. The installation directions (http://www.olympichottub.com/download/limelight_owners_manual_2013.pdf) for the Gleam spa indicates a #6 ground wire. Am I stuck ripping open my wall?