I do a lot of work with other engineers, an example being Colin Baldwin of Cool Solutions. In this climate, it is very common to see electronic gear damaged by illegal occupants. this is a classic example where a millipede decided to have a walk into an air con controller unit. Instant dispatch to the promise land and burning up the board as a result. The main problem is when the bridge the primary and secondary side of power supplies. Tracking mains or HT to the low voltage circuits.