Weather and work combined. I fried a motherboard on a machine, a costly error, and it has set back an overdue project by a day. I double and triple checked my wiring and it was all correct, then I discovered that one of the vendor suppliers installed an MOV with an improper voltage rating. An item designed to protect the circuit, instead destroyed it. Nice.
So at least I don’t feel too stupid. I did my part, but I failed because I trusted the vendor. So tomorrow the new board is upposed to arrive, and i get to put it back in.