I was going to wire my hot tub with some teck 90 #6 3 wire with a ground and already purchased the wire. The teck wire has a black, red, blue and a bare ground wire. My electrician has said that this cannot be used because you need a black,red, white and green wire. I spoke to a hot tub installer and he said that all they do is tape the blue wire with white tape and the bare wire is OK in Canada. I am located in southern Ontario. Any input is appreciated.

If the wire is rated for the application, then it's fair to tape the ends of the wire the proper color. Happens a lot when all the wires are black.

There may be other issues with your planned install that we cannot address.

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Originally Posted by KeepItSimpleStupid

If the wire is rated for the application, then it's fair to tape the ends of the wire the proper color. Happens a lot when all the wires are black.

There may be other issues with your planned install that we cannot address.

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The electrician has told me that the smallest wire that can be taped is a 3/0 is this true for CSA?