My question is about getting into Category 5 equipment and how everyone handles this.
Engineers love to state the equipment is too dangerous to open while energized. This is true, but how do you verify absence of voltage per NFPA 70E once the equipment is de-energized? No one wants to expand on this.
Since NFPA 70E doesn't even recognize Category 5, how does everyone handle verification? Don a 40CAL suit? This is in violation of NFPA 70E.
The only options I see are to:
1) Get a suit with high enough CAL rating to verify. Highest suit I've seen is 140CAL.
2) Do verification in another spot in the system where the incident energy is lower. <- I've looked in NFPA 70E for guidelines on where verification can take place and can't find anything specified.
We run into a lot of service equipment over 100CAL and no GFCI, maintenance mode switch, etc and gets difficult to figure out how to open safely.
Engineers love to state the equipment is too dangerous to open while energized. This is true, but how do you verify absence of voltage per NFPA 70E once the equipment is de-energized? No one wants to expand on this.
Since NFPA 70E doesn't even recognize Category 5, how does everyone handle verification? Don a 40CAL suit? This is in violation of NFPA 70E.
The only options I see are to:
1) Get a suit with high enough CAL rating to verify. Highest suit I've seen is 140CAL.
2) Do verification in another spot in the system where the incident energy is lower. <- I've looked in NFPA 70E for guidelines on where verification can take place and can't find anything specified.
We run into a lot of service equipment over 100CAL and no GFCI, maintenance mode switch, etc and gets difficult to figure out how to open safely.