some questions on hot tub / spa wiring in Canada
I live in Ottawa, Canada, and am with the help of an electrician friend wiring up a 240V hot tub. Although an electrician though he doesn't seem to know the answers to these questions. Our plan is to use Teck-90 6 AWG (3 conductor + ground) wire throughout:
1) About 3 ft from main panel (2 50A cartridge fues) out through wall up to exterior GFCI 50A box.
2) About 20 ft from exterior GFCI box along wall, under deck, drop below ground under hot tub and back through a hole on bottom of hot-tub enclosure (it has a solid thick plastic bottom), another 10ft inside hot-tub enclosure to hot-tub wiring connectors.
My questions are:
1) My understanding is that in Ottawa, the GFCI and box outside must be at least 15ft from the water. Correct? Now does it have to be line-of-sight from the hot-tub? I sure hope not as this will make my install more difficult and I'll need more wire than I just ordered. It seems like in the US one might need it to be line-of-sight but here in a 2006 code book I read that this wasn't required if installing the hot tub "at a dwelling".
2) Can I use cheaper connectors (i.e. not the Teck waterproof ones) for the inside connection to my main panel and for the inside connection within the hot tub enclosure? I will use the Teck connectors outside going to and from the GFCI box.
3) In my inside panel there is not a 3/4" knockout available on the eft side of the panel where the 50A fuses are. There is however a 3/4" hole available on the right side where the main 100A (?) massive fuses are. The panel sort of has two compartments for incoming and outgoing stuff. Am I allowed to bring the teck wire in on this right side compartment,strip to individual wires, and then route the individual wires through an available gap in the compartment wall to the left side where the 50A fuses (and other fuses) reside? I guess my other option is to enlarge the 1/2" (?) knockouts available on the left side of panel.
4) Can the Teck wire just be routed through the cement wall (and plastic hot tub bottom) without any conduit (or LB - what is that?)? Then I can just fill the holes with that expansion foam?
5) Anything I've missed?