HV Glove leather Protectors

[cbranter]

As we march ahead with implimenting an Arc Flash Plan in my maintenance department the following was asked about the HV gloves and protectors.

If you are working on 480V 3PH in a MCC tub in your CAT2 gear but need better finger dexterity to terminate #16 gauge wires in terminal block, are there rules and regs in place that state that you must have the leather protectors over the HV rubber gloves? or can they be removed so that you use the HV rubber gloves only to manipulate the wires into place.

 

[eric9822]

I assume if you are terminating wire then the MCC bucket will be de-energized. If that's the case then no gloves would be required.

 

[cbranter]

I was under the assumption that if the top side of the 30amp
breaker is still fed from the claws on the back of the tub, which attaches to the 2000amp MCCP buses that it would still be considered live.....?

 

[jim dungar]

I was under the assumption that if the top side of the 30amp
breaker is still fed from the claws on the back of the tub, which attaches to the 2000amp MCCP buses that it would still be considered live.....?

Voltage rated PPE and Arc Flash PPE are separate issues.

With the bucket breaker off, you would not need voltage rated PPE until you crossed the restricted approach boundary. But, you would need fully rated arc flash PPE.

 

[cbranter]

Just one of the many arc flash hurdles that need addressed.

Physically impossible to terminate wires, with HV gloves and protectors on.

Shutting down the entire MMC to install 120V hour meter in the tub seems over kill.

That is the where the original question was raised that where is it written that the leather protectors need to be worn.....

It was asked if they could work with out the leathers to get better dexterity through the fingers while still wearig the#00 HV rubber gloves....

 

[eric9822]

This is what OSHA has to say.


1910.137(b)(2)(vii) Protector gloves shall be worn over insulating gloves, except as follows:

1910.137(b)(2)(vii)(A) Protector gloves need not be used with Class 0 gloves, under limited-use conditions, where small equipment and parts manipulation necessitate unusually high finger dexterity.

Note: Extra care is needed in the visual examination of the glove and in the avoidance of handling sharp objects.

Of course the glove manufacturer may say something different. I also seem to remember (but cannnot find and verify) that if you where the gloves without protectors the gloves need to be retested prior to using them again.

Also, the leather protectors are part of the arc flash PPE so if you are within the arc flash boundary, without protectors on it could be a problem.

Are the Line side termination points on the circuit breaker covered? If they are then you should not require arc flash or shock PPE once the breaker is locked out and verified de-energized. All our MCC's have covers over the line side terminals of the breakers or disconnects.

 

[zog]

This is what OSHA has to say.


1910.137(b)(2)(vii) Protector gloves shall be worn over insulating gloves, except as follows:

1910.137(b)(2)(vii)(A) Protector gloves need not be used with Class 0 gloves, under limited-use conditions, where small equipment and parts manipulation necessitate unusually high finger dexterity.

Note: Extra care is needed in the visual examination of the glove and in the avoidance of handling sharp objects.

Of course the glove manufacturer may say something different. I also seem to remember (but cannnot find and verify) that if you where the gloves without protectors the gloves need to be retested prior to using them again.

You are correct about the retesting, it is in ASTM D120