Ron
Most of the work I perform on enegized equipment is 208/120 and 240 volt panels.
I am starting a website with some usefull
links.
Take a look at the arc flash calculators and the videos.
The The Mark Standifer Story is worth registering to see.Near the end of the video they give recomendations for ppe at different voltages.
Here is a link to my site. http://www.gtcom.net/~kdal/taylor/county/florida/Dalton.html