kiwiNCFC
Senior Member
- Joined
- Apr 19, 2009
- Messages
- 155
- Reaction score
- 0
Hello!
I'm an apprentice and today I was working on a new build. It's a TT supply and I have a question. Sorry if it's a stupid one.
I was taking a Ze reading at the DB and I got 900 ohms . This was obviously wrong so I went outside to go check the earth stake.
I went outside and the bolt that holds the clamp to the rod had sheared off thus meaning the earthing conductor was not connected to the rod. I then put a new crimp on and re-bolted it to the rod, back inside I tested for Ze again and got a good 29 ohms .
Back when I was about to put the new clamp on, I asked my boss if I could turn off the supply. He said no and to just put a new one on. Now obviously if you touch the MET/Bonded pipes/Earth Rod in an electrically safe system, you will not get a shock. But let's say for example someone had a chop saw plugged into the sockets and on that chop saw there was a L-E fault would I get a shock now because I'm touching the earth and the fault is following the Earth fault loop path?
Hope someone can clear this up!
Thanks
I'm an apprentice and today I was working on a new build. It's a TT supply and I have a question. Sorry if it's a stupid one.
I was taking a Ze reading at the DB and I got 900 ohms . This was obviously wrong so I went outside to go check the earth stake.
I went outside and the bolt that holds the clamp to the rod had sheared off thus meaning the earthing conductor was not connected to the rod. I then put a new crimp on and re-bolted it to the rod, back inside I tested for Ze again and got a good 29 ohms .
Back when I was about to put the new clamp on, I asked my boss if I could turn off the supply. He said no and to just put a new one on. Now obviously if you touch the MET/Bonded pipes/Earth Rod in an electrically safe system, you will not get a shock. But let's say for example someone had a chop saw plugged into the sockets and on that chop saw there was a L-E fault would I get a shock now because I'm touching the earth and the fault is following the Earth fault loop path?
Hope someone can clear this up!
Thanks