jleman wrote:
1- Switching operations when the doors are closed?
2- Standing outside the cubicles observing meters?
3- Live work in a switchgear feeder cubicle requiring category 2 PPE that is right next to an incoming main cubicle rated above category 4?
Any suggestions?
1. No difference, the 2009 tables have these tasks the same HRC for racking breakers with doors open or closed. Unless it is arc rated switchgear. For switch operation, the HRC's do differ, but not for racking.
2. Again, refer to the tables, as long as you are not "Interacting" with the gear you dont need FR clothing for this.
3. Good question, and not really a clear answer. My understanding here is go with the HRC2 in this case. You shouldnt be working on the part of the system that is HRC 4 (I assume it is high due to the OCPD being the fuses on the MV sode of the transformer).