I was shocked thrice from a cheaply made delta 10" table saw. I couldn't figure it out- the shell was plastic, the switch was plastic, even the protective enclosure over the wiring was plastic. I was stumped! ...until I took it apart, that is. And discovered the screw holding the switch to the saw had somehow been driven straight through the black wire, piercing it but not breaking it, and I was inadvertantly brushing it as I flipped the switch. Delta sent me a new cord, but seemed otherwise unworried that a customer had recieved multiple shocks due to a manufacturing defect.
