im racking my brain trying to get my 220v electric cooktop to work. ALL 4 burners do not operate. i read 220v at all the proper places on the switches etc but when i turn a burner on... the voltage drops to 0. the burner doesnt warm up.
the connections in the junction box (red and black wires in wall FROM panel connecting with wirenut to red and black wires that go to the cooktop) seem tight and clean.
i also used my own 'jumper cables' to connect from the red/black wires in the junction box directly to one of the burner elements (basically by passing all wiring harnesses, switches etc). no current flow. voltage drops from 220 to 0 when i put the burner element in the circuit
i have 2 40amp circuit breakers in the panel box that bring the 220v to this one junction box. i check the voltages at those breakers and measure 110v for each and 220v across the two.
what is happening here? thx