New cooktop won't heat!!!
I just installed a GE JP 328 electric coil cooktop in my parents' kitchen. It was replacing a very similar 20 year-old cooktop, so when I wired it I used the same supply wiring, which matched up perfectly. When I reset the breaker and turned the cooktop on to test it, NOTHING HAPPENED. The burner indicator light did not come on and the burners did not heat. I used an electrical tester to to trace current all the way to the coil, determining that there was juice to the coils.
Both the old and the new cooktops are three-wire. The supply line coming into the box from the panel has three wires: white, black and red. The old cooktop had three wires: green, black and red. The new cooktop has three wires: bare copper, black and red. I disconnected the old cooktop and wired the new one to the supply wires thus: white supply to bare copper cooktop; black supply to black cooktop; red supply to red cooktop. I didn't have to reset the circuit breaker when I was done (sorry, sloppy description); I just turned it back on. By "electrical tester" I mean one of those testers that lights and beeps when held next to a live wire. I didn't hook up a meter.