The Electrical Contractor Network

ECN Electrical Forum
Discussion Forums for Electricians, Inspectors and Related Professionals

Books, Tools and Test Equipment for Electrical and Construction Trades

Register Now!

Register Now!

We want your input!

Featured:
   

2017 NEC and Related
2017 NEC
Now Available!

   
Recent Posts
Sprinklered equipment 26-008
by twh
Today at 06:28 AM
On Delay Relay with Auto Reset
by Potseal
Yesterday at 09:59 AM
Wow, that was close!
by jraef
11/28/16 07:06 PM
Earthquake in New Zeeland
by RODALCO
11/27/16 11:25 PM
Calling all Non-US members!! (Non-US only)
by Tjia1981
11/27/16 06:33 AM
New in the Gallery:
12.5A through 0.75mm˛ flex (just out of curiosity)
Shout Box

Top Posters (30 Days)
gfretwell 15
HotLine1 10
Trumpy 8
Texas_Ranger 8
sparkyinak 7
Who's Online
2 registered (jraef, LongRunner), 188 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#63024 - 03/04/06 01:49 PM Bonding
Sparks30 Offline
Member

Registered: 03/23/02
Posts: 125
Loc: Connecticut.usa
I have a ongoing thing with my boss about bonding, we are doing a 450ft run of 4/0 and #2 ground. Going though 4 j-box's. There are no concentic k.o's all are punched, I say we should use bonding bushings not just locknuts for the bond. He says just plastic bushings. Who would be right. Thanks Sam

( This is a panel off the main gear )

[This message has been edited by Sparks30 (edited 03-04-2006).]

Top
Work Gear for Electricians and the Trades

Work Gear for Electricians and the Trades
Work Gear for Electricians and the Trades
Arc Flash Clothing, Gloves, KneePads, Tool Belts, Pouches, Tool Carriers, etc. etc....

#63025 - 03/04/06 02:55 PM Re: Bonding
bot540 Offline
Member

Registered: 09/14/04
Posts: 177
Loc: Vernon Hills, IL
While bonding bushings would not be a bad idea you don't need them. You only need them if using concentric or ecentric knockouts. Read 250.92 and 250.97
_________________________
Jesus may have been a capenter,but God was an electrician.Genesis1:3

Top
#63026 - 03/04/06 08:23 PM Re: Bonding
Yoopersup Offline
Member

Registered: 03/04/03
Posts: 826
Loc: Michigan
2005 NEC 250.92 is for services . As this is a feeder . (250.97) deals with Bonding over 250 volts to ground. If this was a 120/240 or 120/208 volt. Bonding bushings on a feeder would not be required Even if concentric or ecentric was involved. IF they were in good condition.

Top
#63027 - 03/04/06 08:46 PM Re: Bonding
bot540 Offline
Member

Registered: 09/14/04
Posts: 177
Loc: Vernon Hills, IL
Most inspectors around here(Northern Illinois) make you put them on with concentric or ecentric knockouts. Especially for feeders.
_________________________
Jesus may have been a capenter,but God was an electrician.Genesis1:3

Top
#63028 - 03/05/06 06:03 AM Re: Bonding
Sparks30 Offline
Member

Registered: 03/23/02
Posts: 125
Loc: Connecticut.usa
When the inspector looked at the underground branch he said he would be looking for the rigid sweeps and EMT to be grounded. Thanks for the input. Sam

Top



ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals