NFPA 70E and using insulation piercing connectors on energized 1

[Nfgbill]

Where do you think that 70E addresses using insulation piercing connectors on energized conductors? Voltage is 120V from a midsize UPS.

 

[dpc]

Addresses it how? NFPA 70E is pretty general regarding working on energized equipment. Presumably, you would need an energized work permit and appropriate shock risk and arc flash risk protection - and a "qualified" person to do the work. The permit would have to oover why the equipment cannot be de-energized. There would be only 2 acceptable reasons: infeasibility, or greater hazard. I suspect neither apply. Arc-flash risk at 120 V is pretty low, but not zero.

Just my $0.02: I'm not a fan of these connectors. If this is connecting to a UPS presumably it is an important load, so trusting it to these connectors seems problematic.

Dave

 

[waross]

I see a lot of insulation piercing connectors on owner fixes on 12 Volt trailer wiring.
Are they available with approvals for 120 Volts?
They are the primary cause of wiring failure of trailers operated on pavement.
I see a lot of trailers that run a lot of gravel loads.
Gravel impingement and mud accumulation are the primary causes of wiring failure on gravel roads.


Bill
--------------------
Ohm's law
Not just a good idea;
It's the LAW!

 

[dpc]

Bill,

Ilsco does make some 300V insulation-piercing connectors - UL/CSA. I don't have much experience with them. Could be useful for temporary or emergency situations, but I don't know about a permanent install.

Cheers,

Dave

 

[Palletjack]

The Ulah I connectors are used a lot and are listed for energized installation.

 

[jraef]

I agree with Dave. As this would relate to NFPA 70E, live work is live work, so the rules in NFPA70E regarding live work would not be altered by virtue of the nature of the product being worked on or with. So all rules pertaining to working on live 120V circuits are still applicable.


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