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by timmp, September 10
Plumber meets Electrician
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by timmp, September 10
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Joined: Jun 2004
Posts: 92
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Peter Offline OP
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Folks,
I ran into a situation today which you may symphasize with. I was pulling wires through a L E Mason, Red Dot condulet and there is a sharp cornerinside the LB and it was scraping insulation from my wires. Two white wires ended up with bare copper showing. I don't know why tthe company buys this junk and why Thomas & Betts produces it. [They also have the obsolete straight slotted screws.]
Has anyone else experienced this problem?
~Peter

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T
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I'm sure your company is very proud of your workmanship and helping them see a profit.

Dave

Joined: Jul 2004
Posts: 625
S
Member
Does your buyer in fact know that it's junk? Generally, all he knows is what the catalog says about it, and what the price quote is. I've never seen a catalog page that says, "This stuff is junk." If nobody tells him that it's no good, he'll just keep buying it, assuming that it's OK.

Joined: Jul 2002
Posts: 8,443
Likes: 4
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S/Powered,
Quote
I've never seen a catalog page that says, "This stuff is junk."
Can't say I have either, but I'm all for honesty when it comes to product descriptions.
[Linked Image]

Joined: Sep 2002
Posts: 37
F
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yep, 300 foot pull of twin sets 3/0 copper, 8 wires total, pulled both directions from center point by hand through multiple bend, lb, trough, anything on the shelf. last 40' skinned 2 wires like mad. 4 rolls of 33+ later and some white tape to make them neutrals and we were done. NOT my idea

Joined: Jul 2002
Posts: 8,443
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Regardless of the length of pull,
I'd recommend the prolific use of Lube.
Cable lube is a wholly under-stated thing, sure it will not help with sharp edges, but it will help with a long pull.
As an Electrician, I check all of the surfaces, (mainly bends) that I will be pulling through, for smoothness.
Anything that has a sharp or even coarse edge, gets the file treatment.
Having cables or wires blow out within a conduit, because of poor installation here is looked upon as very bad practice.
I expect it is the same in the US?.

Joined: Dec 2004
Posts: 94
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tkb Offline
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What size conduit?
What was the max size and nuumber of conductors marked on the LB?

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Quote
What was the max size and number of conductors marked on the LB?

That is a real consideration.

A typical LB can not hold the same number of conductors as the raceway it is connect to.

A typical problem I run into is 225 amp feeders. We can run four 4/0 in 2" EMT but the 2" EMT LB is labeled as three - 4/0s max.

By the way TKB, how is BU I hear you have been a great help there and other places. [Linked Image]

Bob


Bob Badger
Construction & Maintenance Electrician
Massachusetts
Joined: Dec 2004
Posts: 94
T
tkb Offline
Member
Bob,
I think BU is finished, but the S&S nights were tough.
I like being on my own, but sometimes I miss the big machine.
Like they say, They always come back. I'mmm baaack. [Linked Image]
Hope to help more in the future.

[This message has been edited by tkb (edited 09-08-2005).]

Joined: Dec 2004
Posts: 94
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tkb Offline
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Quote
A typical LB can not hold the same number of conductors as the raceway it is connect to.

Wouldn't it be nice if the manufactures and the NEC would get on the same page with this?
I think that all LB's should allow the same fill as the conduits that connect to them. If this means redesign of the LB's then so be it.

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