Originally Posted by JBD
Originally Posted by Yoopersup
Back to my Main Question .
Ist off NEC requires 110.16 Arc Flash warning Stickers Only.
70-E a safety program which requires a Hazard Risk Evaluation, Which produces the requirement that the Informatin stickers be posted.Then it says Hazards over 50v require protection if Hazard Analize requires. Now Just getting Picky here . Panels, Swithgear, starters, Anything that might be worked on hot. BUT where does it stop and where in the Book does it says that it stops.
Read 130.2C in 70-E , it plainly states live parts operatoring over 50 volts.
Yoopersup


NFPA 70E-2004 (the one in effect now) does not require any stickers/labels/posted information other than what is needed to meet NEC 110.16. The next version of 70E is supposed to require labels.

Whenever you work near (the next 70E will say something like "interact with") energized parts >=50V you need to wear appropriate shock and arc flash PPE. This always applies, there are no exceptions.

You may choose arc flash PPE based on calculations or per the "task tables" in 130.7(C)(9). Most system studies base their calculations on IEEE-1584. This standard does not have any method of calculating arc flash incident energy values for single phase or DC circuits, so you are left using the task table for these systems.

Everyone should remember that 70E is not just about arc flash. 70E requires that all employers adopt an Electrical Safe Work Practices program. This program needs to address at least: PPE, maintenance, LOTO, training, and live work permits. I find it unlikely that someone can be adequately trained in NFPA 70E requirements by attending a manufacturer's 2hr seminar on arc flash only.


Well put, those 2 hr sessions just break the ice of the 70E. The 70E emcompasees many things as you said, many people refer to the 70E as arc flash oor how to work hot. One of the first articles in 70E says DONT WORK ON ENERGIZED EQUIPMENT, then it lists a few exceptions, followed by 100 pages of how to work safely on energized equipment, but the 1st statement is often overlooked.


MV/HV Testing Specialist, "BKRMAN"