Reply by Rick Dennington

I’ve had my d.c. and setup for about 15 years….It’s been in 2 different shops, and never been grounded. I use S-40 thin wall 4”, and never had a problem with it. You really don’t need to ground the plastic pipe. As far as I know, and have read, that there has never been a fire reported for using this pipe. I’ve never
heard an LJ on this forum report that they have had a fire using plastic pipeing, and most on here say they
don’t ground theirs either…..And I’ve never been shocked touching my machines, either..That’s what 3way
plugs are for…...To ground or not to ground, it’s up to you…...

-- " Don't ever wrestle a pig in a mudhole....he'll be having more fun than you..!!