was a ground req'd in the ridgid????

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ce2two

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Worked at factory in the 90's as maintenance electrician ran 3/4 ridgid from buss duct to machine, a veritical drop to a tee condelet ridgid nipple to a floor stantion........i pulled in 3 #10's ,with no ground , they cried fowl ,were they right about that call ?
 
ce2two said:
Worked at factory in the 90's as maintenance electrician ran 3/4 ridgid from buss duct to machine, a veritical drop to a tee condelet ridgid nipple to a floor stantion........i pulled in 3 #10's ,with no ground , they cried fowl ,were they right about that call ?
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as long as there was a continuous connection, unless it was in a hazardous area, it was OK per NEC.

company standards are something else.
 
ce2two

ce2two

used threaded couplings ,nice and tight as always ,actually the guy who was snitch for company might have wanted me to look bad at all costs, every co. has a snitch trust me .........he'll be the last man standing ?????//
 
ce2two said:
used threaded couplings ,nice and tight as always ,actually the guy who was snitch for company might have wanted me to look bad at all costs, every co. has a snitch trust me .........he'll be the last man standing ?????//
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could be a company standard though. it is important to follow all of the rules, not just the bare minimum that is in the NEC.
 
RMC can serve as the "conductive path" required by 250.118. This was made clear in the 2008 NEC by two FPNs added to the definition of EGC.
By the way, ground is defined as "the earth". Did you pull an earth?
My point is, as an industry we are confused on grounding and bonding, it would help if we used the correct terms.
 
ce2two said:
.... they cried fowl ,were they right about that call ?
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That would depend....what is the policy?
NEC policy [250.118(2) ~ 2008; 2005; 2002;1999....]

Job spec policy
 
Companies require ground wire for any number of reasons-
1- They dont' want to have to trust locknuts or connectors/couplings to stay tight with excessive or constant building vibration due to their processes
2- They have found that their pipe rots due to high humidity or just because it does when it's in slab and want to ensure they have a constant ground.
3- It was a government spec- All government jobs I have been on have required a ground wire.
4- The engineer says so. See above.

An extra path to ground can help reduce line interferance as well.
 
I almost always pull a ground in Metal conduit. I have been on at least 3 calls in the past 20 years where there was a ground fault causing a pipe or connector to glow red hot.

Since there was no ground in the conduit the slightly loose locknut/connector basically turned into a toaster oven coil.

Only time I don't pull a ground is in a short 3' or less piece.

I think the NEC put way too much trust in guys tightening stuff up . Ground should be required IMHO
 
Rich R said:
I think the NEC put way too much trust in guys tightening stuff up . Ground should be required IMHO
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Don't you have to tighten an EGC that is run in conduit also ?
:confused:
 
celtic said:
Don't you have to tighten an EGC that is run in conduit also ?
:confused:
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True, but i have rarely seen a loose ground wire in a panel or under a terminal. I have seen plenty of loose set screws and locknuts, most done by the apprentice that ran the counduit.

Next time you go to a job where a bunch of conduit has been run and set screw fittings were used, look at the connectors where they enter the j Box's, I'll bet you will see at least one untightened set screw at every job.

Happens all the time, people stick the conduit into the connector that they pre installed at box or panel, they strap the conduit but forget to tighten the set screw
 
alfiesauce said:
1- They dont' want to have to trust locknuts or connectors/couplings to stay tight with excessive or constant building vibration due to their processes
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This is our standard. Vibrating equipment will loosen locknuts, etc.
 
Wrong word

Wrong word

ce2two said:
. . . from buss duct . . .
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I am not picking on you but I have seen 'buss' used numerous times where 'bus' should have been used. I am sure the Bussmann fuse company loves the extra advertisement. ;)
 
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