2006-10-18 23:44:59 · 5 answers · asked by Philip 1 in Science & Mathematics ➔ Engineering
The only list I can think of is very short:
- pipes possibly involved in an earthing path and you don't want to break that;
- something connected to each end of the pipe giving rise to possibility of static discharge between the ends of the pipe when you disconnect them - only a problem if there is something highly inflammable near where you are working.
2006-10-19 02:22:21 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It is about safety. When you don't know how much voltage is live, or stored in the pipe, its best to ground the pipe to a known ground. Even if you check it once. Some thing could change when you start working. The energy could be coming from either end of the piping too.
The electrical path to ground could be you. A dangerous thing.
This is important, as you could be touching the live pipe, and your feet could be touching an actual use full electrical ground. Your body will be the conductor and there's a chance that you could be electrocuted
2006-10-19 11:08:33 · answer #2 · answered by designer_brian 2 · 0⤊ 0⤋
List?
The only reason I can think of is in case the pipe(s) are being used as an earth for some piece of electrical equipment that the fitter may not be aware of.
Best of Luck - Mike
2006-10-19 07:40:44 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Don't be fooling around. Worthless lazy dead beat electricians often do not pull ground wires when they run metallic conduit. So if you take the conduit apart You have have ungrounded some panel or piece of equipment downstream. Which puts anyone messing the panel or equipment in danger.
2006-10-19 13:24:33 · answer #4 · answered by Roadkill 6 · 0⤊ 0⤋
Earthing - you would not want to be part of the Earth circuit when you are performing your job would you?
2006-10-19 07:42:08 · answer #5 · answered by advent m 3 · 0⤊ 0⤋