Originally Posted by
Nick Ostrowski
when you say the panel doors would not open, are you saying the hinged cover would not open
I suspect that is what she is saying.
This would be because those typically have an internal locking mechanism which 'locks' the hinged cover closed while the switching mechanism inside is 'on'. It releases when the handle is pulled to 'off'.
A safety feature to help protect workers from working on those while energized (except for the line side).
On a side note, a recent publication I got from NFPA stated that 'hundreds of electrical workers are electrocuted each year', and another which stated that 'an average of over one per day' is electrocuted, with 'thousands other workers injured, from 'serious burn and injuries' to less serious injuries.
'Electrical shock is the greatest cause of death and injury to electrical workers'.
Q: How many HIs wear proper PPE?
A: None.
Q: How many HIs know what proper PPE is (when working around live open panels and equipment)?
A: Very few.
Q: How many electricians or electrical workers wear proper PPE?
A: Very few. That's why there are so many deaths and serious injuries each year.