periodic torque of switch gear

[zog]

Could be, once again, we really don't know do we?


Roger

Since when do facts get in the way of our discussions? I have a feeling this is one of those dead end threads where the OP never comes back.

That being said, if this is for connections in switchgear and the decision to torque is made the right values should be used.

 

[iwire]

That being said, if this is for connections in switchgear and the decision to torque is made the right values should be used.

But the question remains, are you saying that upon installation these should be checked or are you saying as a yearly exercise?

 

[zog]

But the question remains, are you saying that upon installation these should be checked or are you saying as a yearly exercise?

They should be torqued at installation and checked by the commisioning test engineer. After that I recomend testing them with a microhmeter during maintenence inspections.

 

[weressl]

Yet no arc flash label, the one that matters is missing

Agreed, nor can we see any reference to the FUNCTION of the switch? We do not know what it shuts down or operates.

To be fair, we are not seeing the entire equipment, only a part shows up in the picture, it is possible that those labels are somewhere outside of the picture.:roll:

 

[iwire]

They should be torqued at installation and checked by the commisioning test engineer. After that I recomend testing them with a microhmeter during maintenence inspections.

So the answer to the OPs question ....

I have been unable to find in NEC,NFPA 70B or Stalcup's a requirement for periodic torque on switch gear for a facility. Is there a rule of thumb or did I completely miss it?

..... is there is not one, much like Roger mentioned in post 2.

 

[zog]

So the answer to the OPs question ....



..... is there is not one, much like Roger mentioned in post 2.

Yes, and I posted it in post #5. Checking torque is 1 of 3 options.