Would probing a 100 volt circuit card with insulated tools be considered live work requiring insulated gloves or are the insulated tools considered enough shock protection?
It’s a tough question to address adequately. The specific requirement is for shock protection to safe guard an employee from coming into contact with an electrical hazard.
Article 130.7(C)(1) makes it clear that “When an employee is working within the restricted approach boundary, the worker shall wear PPE in accordance with 130.4.” The restricted approach boundary for that voltage value is “Avoid Contact” making it sort of unclear when an uninsulated part of the body would need to be protected. You could, in my opinion, argue that if you do, in fact, “avoid contact,” you should not require voltage rated, insulated rubber gloves with leather protectors, but trying to define “avoid contact,” when it means if you are touching an exposed circuit part with a tool, or with your finger gets a bit dicey.
For further clarification I would look at article 130.7(C)(7) which identifies the need for Hand and Arm protection for both the Shock and arc Flash hazards.
I would look at 130.7(C)(7)(a) for guidance, which states that “Employees shall wear rubber insulating gloves with leather protectors where there is a danger of hand injury from electrical shock due to contact with energized electrical conductors or circuit parts.”
Not cut and dried, but certainly a good guide to help you determine if you should require your qualified worker to put on those gloves. In my plant (where I am responsible for these sorts of decision) I always insist that the qualified worker wears the proper voltage rated gloves and leather protectors when performing voltage checks on energized equipment using test probes or insulated tools of any kind. Better safe than sorry.
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