ThinkGood:
No, the box is not bonded with the feeder. There is an AL wire that is tied to the cable for the range. The only real path to ground would be the metalic sheath covering the cable (not a valid path).
As for the IR camera. What I meant to say is that I use it in a heavy industrial environment. I (along with a technician) perform scans on the 13.8KV system down to the 120 V system. Of course, the emphasis is on the 13.8 KV and the 480 V gear. I still do many (NOT ALL) of the 120 receptacle and lighting panels while I have the camera out. The most common (and pretty much the only) things I find are overloaded (OL) breakers in the recept panels. It is common on a receptacle, to have those (NASTY) surge strips with enough plugged into it to pull 18-20A on 1 20A breaker. These show up very well in a panel. When I figure how to post a picture, I'll include 1. There are some limitations to an IR camera though. Temperature is not correctly shown most of the time. The ideal way is to compare with a past picture or with like systems (configuration and loads).
see this web site for good info.
http://www.snellinfrared.com/inthepress/Rice.pdf Of course, the biggest problem with IR scans of electrical systems is how do you see the load carrying components
SAFELY. You CAN'T open the doors to the 13.8 KV switch while energized. There are 2 products that help with this. I will be trying each during our power outage scheduled for July.
http://www.hawk-ir.com/ or http://www.squared.com/us/services_support/squared_services.nsf/unid/8454D5FB98F8666A85256B1B00681928/$file/infraredinspectionpage.htm
Hope this all works!!!!
