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 bigpapa
12/02/16 04:24 PM
On Delay Relay with Auto Reset
by Potseal
12/01/16 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 13
HotLine1 10
Texas_Ranger 8
Trumpy 8
sparkyinak 7
Who's Online
1 registered (LongRunner), 90 Guests and 4 Spiders online.
Key: Admin, Global Mod, Mod
Page 1 of 2 1 2 >
Topic Options
Rate This Topic
#32380 - 12/22/03 08:19 AM Aluminium or Steel Conduit
VOLTS Offline
Member

Registered: 06/02/01
Posts: 21
Could I get some opinions on Aluminium or steel conduits. When ordering 2" rigid conduit for a job I ordered steel. The conduit run will be outdoors on an overhead rack at a chemical facility. 1/2 the guys are complaining that steel is to heavy but they are straight runs and I always felt steel was easier to pull through. could I get some thoughts? Thanks

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....

#32381 - 12/22/03 10:51 AM Re: Aluminium or Steel Conduit
DougW Offline
Member

Registered: 06/08/03
Posts: 1083
Loc: North Chicago, IL
The main consideration that I'm aware of(besides weight, and Code requirements) for steel (Fe) v. Al is atmospheric considerations. Are there vapors which would affect Fe v. Al, or vice versa? If there are no atmospheric concerns, I guess it boils down to personal preference (As well as the AHJ, of course )

I remember years ago seeing Fe, PVC, CPVC, Al, Stainless Fe, and some sort of bronze alloy conduit. Where there's a market, I guess...

[This message has been edited by DougW (edited 12-22-2003).]

Top
#32382 - 12/22/03 11:12 AM Re: Aluminium or Steel Conduit
iwire Offline
Moderator

Registered: 01/05/03
Posts: 4343
Loc: North Attleboro, MA USA
Isn't aluminum conduit significantly more expensive?

Tell your guys to eat their Wheaties and get to work.

Sorry not much sympathy, we run a fair amount of 4" RMC, I have run 5" RMC and some of our guys have had to run a lot of 6" RMC.
_________________________
Bob Badger
Construction & Maintenance Electrician
Massachusetts

Top
#32383 - 12/22/03 11:32 AM Re: Aluminium or Steel Conduit
VOLTS Offline
Member

Registered: 06/02/01
Posts: 21
That's what I told them. Love Your outlook IWIRE!

Top
#32384 - 12/22/03 12:06 PM Re: Aluminium or Steel Conduit
resqcapt19 Offline
Member

Registered: 11/10/00
Posts: 2209
Loc: IL
In my opinion aluminum while being lighter than steel is much harder to work with. If you over bend a 90 you can't take the bend out. It just makes another bend in the pipe below the 90. The first time some one walks on your pipe rack, the pipe will bend making the job look like a hack installed it. Even when using thread lube, the threads often "gall" up at fittings. It is too smooth inside and makes wire pulling harder than in steel conduit. It costs too much. I would only use it when it is required because of corrosive issues in the area.
Don
_________________________
Don(resqcapt19)

Top
#32385 - 12/22/03 02:25 PM Re: Aluminium or Steel Conduit
walrus Offline
Member

Registered: 07/25/02
Posts: 671
Loc: Bangor Me. USA
Surprisingly last time I bought Aluminum in small sizes(1/2 3/4) it was less expensive. For the life of me couldn't figure that one out. This was years ago not sure about today

Top
#32386 - 12/22/03 02:32 PM Re: Aluminium or Steel Conduit
Bjarney Offline
Moderator

Registered: 04/10/02
Posts: 2561
Loc: West-Southern Inner-Northeast ...
From tank-farm and dairy days, aluminum conduit will tie itself into knots from routine exposed expansion and contraction.

Seems to me it's one of those "looks good in the catalog" items, but you hate it a year later.

["Relton A-9" aluminum cutting fluid smells and looks like 1950’s Aqua Velva shaving lotion.]

Top
#32387 - 12/22/03 06:11 PM Re: Aluminium or Steel Conduit
Scott35 Offline

Broom Pusher and
Member

Registered: 10/19/00
Posts: 2724
Loc: Anaheim, CA. USA
Iwire;

 Quote:

Tell your guys to eat their Wheaties and get to work.


Double LOL!!!

Bjarney;

 Quote:

"Relton A-9" aluminum cutting fluid smells and looks like 1950’s Aqua Velva shaving
lotion.


Must have seen / smelled this a few times myself - sometimes in the stock room Conduit racks, where short sections of Conduit "Remnants" (sp???) end up laying until the Sun collapses upon its self.

Me... Scott35
_________________________
Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!

Top
#32388 - 01/07/04 10:20 AM Re: Aluminium or Steel Conduit
rmiell Offline
Member

Registered: 11/09/00
Posts: 261
Loc: La Junta, Co. USA
What about using al conduit in earth? What is considered supplementary protection?

I have an oppurtunity to purchase some 2" and 4" al conduit (roughly 200' of each), real cheap (excess from a big job close to my location). Would it be worth it do get these?

I can see a use up a pole (riser), or maybe even as a mast(it is a strong as a GRC mast, isn't it?). Underground lateral into a meter socket, would eliminate the need for a PVC expansion fitting.

Any thoughts?

Rick Miell

Top
#32389 - 01/07/04 02:19 PM Re: Aluminium or Steel Conduit
CRW Offline
Member

Registered: 02/11/01
Posts: 160
Loc: Bethlehem, PA USA
I don't believe you can use it for a mast to support the service drop. I've used it as a service riser mounted to the building surface. In Chicago you couldn't bury it because minerals in the soil will corrode it. Definitely not in concrete. I never really hear of people burying it at all.

Top
Page 1 of 2 1 2 >



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