Is it necessary to wear anti-static overcoats when working on electronics?

[treez]

Ive worked in some 35 different electronics hardware co's....in only one did we have to wear ESD overcoats.

If you have an esd mat with wrist strap , and an esd footstrap and esd flooring, is it still necessary to wear an esd jacket?

Can this be worn over a wooly jumper?

.............

Also at 2:06 of the following esd video, they use a crocodile clip to ground the metal chassis of electronics equipment to the esd mat (to earth)......is this necessary if the chassis is resting on an earthed esd mat?
https://www.youtube.com/watch?v=y5FswkQ4bi0

 

[dick_freebird]

Part of the idea is that you cover up your triboelectric
woolly jumper. Wrist strap is not going to pull charge
off the surface of insulators you are wearing - only
the "meat capacitor".

 

[treez]

Thanks, as such, i presume a woolly jumper is ok as long as it doesnt touch the PCB you're working on?

 

[dick_freebird]

"As long as" is weasel words for "do you feel lucky?"

"Well, do you, punk?" - Dirty Harry