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
Forum Software Upgrade coming soon...
by Webmaster
Today at 08:52 AM
Would ELV branch circuits be a good idea?
by geoff in UK
Today at 03:25 AM
Why cables look like they do
by Trumpy
Today at 02:20 AM
Re: Fabricating Guards out of Lexan?
by Trumpy
Today at 12:36 AM
100% breakers?
by Texas_Ranger
Yesterday at 06:13 AM
New in the Gallery:
Desk-mounted "power-board"
Shout Box

Top Posters (30 Days)
HotLine1 16
Trumpy 12
Webmaster 12
ghost307 10
frank 9
Who's Online
1 registered (ghost307), 0 Guests and 73 Spiders online.
Key: Admin, Global Mod, Mod
Topic Options
Rate This Topic
#12601 - 08/12/02 07:44 PM Mission impossible ?!
makyts Offline
Junior Member

Registered: 08/12/02
Posts: 2
Loc: chicago,il,USA
In existing multifamily dwelling (the action is taking place in Chicago) the part of service entrance conduit (circle area on the pictures bellow) has been eaten by rust. The building is ( and has to be ) occupied and has to survive 6 months without replacing that service conduit. Service is life front, building is 80 years old, so replacing conduit means :
1)replacing both service conduits, replacing the old service, and old feeders
2)new service conduits, new service, and new feeders size has to be according to new standards NEC2002 AND CEC2002
so this is classic “chain reactions” or (...)
Wires are also very old (around 80 years !? ) and covered with asphalt type insulation
So far nothing has happened ( no major fireworks ) but I think the clock is ticking…

Any ideas how to temporary protect ( against : rain, snow , and unforeseen events) that rusted area ?


Regards

makyts




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....

#12602 - 08/12/02 08:47 PM Re: Mission impossible ?!
electric-ed Offline
Member

Registered: 07/08/02
Posts: 184
Loc: Canada
On a day when the area is thoroughly dry, blow out the dirt and debris with air, carefully fill the rusted out cavity with silicone caulk.
Then build a form and pour a concrete "block" over the area for physical protection.

Ed

Top
#12603 - 08/15/02 04:06 PM Re: Mission impossible ?!
The Watt Doctor Offline
Member

Registered: 12/23/01
Posts: 443
Loc: Mont Belvieu, TX
Ed has a good idea. Let me throw another one your way. I would build a box or chase around the conduits, and attach it to the wall. IMHO if those conductors are going to "blow up" in the next 6 months, they are going to do it no matter what you do to try to prevent it. I wouldn't be as concerned about a phase to phase fault as I would a phase to ground fault that energizes one of the service entrance conduits.
I think I would call the City of Chicago electrical inspections department, and have an inspector come out to have a look at it with you. Tell him your situation, and I'm sure that y'all can come up with a solution.

This message will self destruct in 5 seconds,
Doc
_________________________
The Watt Doctor
Altura Cogen
Channelview, TX

Top
#12604 - 08/15/02 04:49 PM Re: Mission impossible ?!
smokey Offline
Member

Registered: 04/06/01
Posts: 42
Loc: cctxusa
if i was u i would not touch anything i would not want to be held liable if some fireworks do start and cause a fire sometimes it is better to just walk away if they do not allow u to fix it the wright way dont do anything at all

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