Compression Lug Maintenance?

[FlComm]

I have a client that is claiming annual maintenance in the form of re-crimping compression lugs is required per standard practices. I have searched and can't find anything that references this practice for code or even just a "good practice".

I have always felt one of the main advantages of a compression lugs was not having to worry about this they way you do with a mechanical lug.

Can anyone point me to a articles that supports or rejects the client's statement?

 

[jumper]

I would say that one is more likely to do harm than good trying to recrimp a compression lug. I have never heard of such.

 

[ron]

Never heard of re-crimping. I've heard of folks re-torquing the lugs to the bus, but that process sometimes leads to changing the connection indents and reducing effectiveness.

 

[qcroanoke]

I would say that one is more likely to do harm than good trying to recrimp a compression lug. I have never heard of such.

+1

 

[zbang]

Sounds like a silly idea, but you could call Burndy/T&B/etc and ask; I suspect you won't be surprised by the answer.

 

[Besoeker]

I would say that one is more likely to do harm than good trying to recrimp a compression lug. I have never heard of such.

Totally agree.
We used compression lugs on all sizes of conductors from 18AWG upwards.
During annual maintenance terminal bolt torques would be checked and retorqued IF required.
Lugs recrimped rarely.

 

[gadfly56]

Totally agree.
We used compression lugs on all sizes of conductors from 18AWG upwards.
During annual maintenance terminal bolt torques would be checked and retorqued IF required.
Lugs recrimped rarely.

What would compel recrimping ever?

 

[FlComm]

Thanks everyone .

You have confirmed what I always believed to be true and that there was no basis in his comments. Just didn't want to go back telling him he had been incorrectly informed and watch him pull out some code reference.:dunce:

 

[Fulthrotl]

Thanks everyone .

You have confirmed what I always believed to be true and that there was no basis in his comments. Just didn't want to go back telling him he had been incorrectly informed and watch him pull out some code reference.:dunce:

we have you covered. when your BS filter gets plugged by people spewing out there,
we have toothbrushes to help you clean it.

it's a swaged fitting. if it's properly crimped, it's done for all time.
if it's your customer, i wonder who was selling him the magic beans
every year.... :lol:

 

[big john]

Maintenance on terminations should be infrared or contact resistance.

I'm not a fan of reapplying force to anything: Done right connections should be left alone indefinitely.

In addition to risking over-tightening, simply "re doing" terminations tells you nothing about how gosh they actually are.

 

[Jraef]

As I recall, the UL standard for compression lugs requires them to be a permanent connection, no maintenance required. In fact when I was trained oh so long ago, I was told that if you could not read the compression die number that gets embossed onto the lug when you are done, you had to cut it off and start over, no recrimpimg allowed! So going back annually and redoing it would potentially mar the embossings and invalidate the crimp. I think it's not just unnecessary, it's a bad idea.

 

[Fulthrotl]

As I recall, the UL standard for compression lugs requires them to be a permanent connection, no maintenance required. In fact when I was trained oh so long ago, I was told that if you could not read the compression die number that gets embossed onto the lug when you are done, you had to cut it off and start over, no recrimpimg allowed! So going back annually and redoing it would potentially mar the embossings and invalidate the crimp. I think it's not just unnecessary, it's a bad idea.

yup. this was in the specs on something i bid last week...