[Fred Hayek]

Ground cables - makes me then wonder about their grounding system. Every truck loading terminal that I had worked on had a grounding monitor. The truck grounding cable was connected to the monitor (look up Scully Groundhog). If a proper grounding connection was not maintained, the control logic would not permit product loading.

http://www.scully.com/cgi-bin/pdf/60733_desc.pdf

OSHA is going to be on this one, as well as Texas.
BTW, I do not work for Scully Signal, nor market their products. I am an applications engineer.

[spunkets]

"...Scully Groundhog). If a proper grounding connection was not maintained, the control logic would not permit product loading.

thanks. I knew the system was safe, just not the details.

[Paladin2]

Thanks for the info. I’d never seen that type of system before.