gfi in manufacturing plant

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Davebones

Senior Member
Have convience outlet's on floor and management doesn't want them do to ocasionally tripping .Not a real problem ,in fact most of the time the problem was something going to ground .Not water on floor but management keeps changing the floor layout and a lot of the equipment is becomming portable with wheels . ( KAZEN if you know what I mean ) I think we should continue to use GFI's if we can . A lot of aerospace assembly .Any thoughts would be appreciated .
 

zog

Senior Member
Location
Charlotte, NC
Have convience outlet's on floor and management doesn't want them do to ocasionally tripping .Not a real problem ,in fact most of the time the problem was something going to ground .Not water on floor but management keeps changing the floor layout and a lot of the equipment is becomming portable with wheels . ( KAZEN if you know what I mean ) I think we should continue to use GFI's if we can . A lot of aerospace assembly .Any thoughts would be appreciated .

GFCI.

Not sure what your question really is, but the requirements for GFCI's on portable equipment still applies.
 

GUNNING

Senior Member
oops.

oops.

If I was management I would have you check all of them every month like the instructions say.
I was working in a factory replacing ballasts, All the ballasts and lamps. It was a retrofit. The place had giant stamping equipment. LOTS of stamping equipment. It was so loud your chest vibrated while on the floor. 24 hours a day 7 days a week. Made widgets. Millions of them a day.
Got the last ballast in, it was in a storage area, the mezzanine. Had a pinched wire in the fixture. My helper does the ol turn the switch on motion with his arm. Its so loud there is no verbal communication, just hand motions. There was the switch by the stairwell. There goes my hand to the switch. Its like it was yesterday. Click!

Every light in the place goes off. Every piece of equipment goes down, All the lines, Every compressor winds down. People fall out of the offices, cafeteria, lavatories, everywhere. Stunned faces of machinists sorters, managers, QC personnel, everyone in the dim glow of the E lights. I can remember it like it was yesterday. Burned into the back of my head. Frantically trying to turn on those lights by the stair well. click click click click. No go.

That's when I read up on mains over 800 amp being GFCI protected.

Don'T ya think it would have been better to protect the circuits?

No question, GFCI the outlet.
 

chris kennedy

Senior Member
Location
Miami Fla.
Occupation
60 yr old tool twisting electrician
That's when I read up on mains over 800 amp being GFCI protected.

Don't confuse GFP of servives as per 230.95 with GFCI as per 210.8. I think you took the building down because of poor coordination of the breakers involved.

Don'T ya think it would have been better to protect the circuits?

No question, GFCI the outlet.
For lighting circuits?

EDIT: What Frank said.
 

zog

Senior Member
Location
Charlotte, NC
Don't confuse GFP of servives as per 230.95 with GFCI as per 210.8. I think you took the building down because of poor coordination of the breakers involved.


I would say that is one of the most common misconceptions in industrial plants. GFP vs. GFCI, a lot of industrial guys call it all GFI's.
 
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