I suppose that I will take the risk and point out a use that I found one of these used in that I found quite logical. Last week I was at a remote water system that was generator run (read as "What is commercial power?"). The site had the abitlity to have a portable generator brought in for temporary power if the main generator was down for repairs and used one of these to switch between the two generator sources. Switching was only occurring when both sources were off. Nice and inexpensive solution without any hazards involved. The generator onsite was under 10 kw.
Shane
