I am installing a sauna, and I hit the new sauna wire with the blade of my reciprocating saw. It damaged the covering of the wire and partially cut one of the small copper wire strands inside. It's a red and black inside with a ground. Each has 7 copper strands in them. The wire says NMD 90 300 volts. Can I still attach and use this wire as is, or will I burn my house down? I just wrapped it with electrical tape for now.
What do I do?
Thanks all.