The power cord of an electric range is a 240V, heavy gauge wire with either 3 or 4 prongs on the plug. If the wire has been damaged, visible or not, the oven may still work or may not work at all. The power cord connects to a terminal block inside the appliance. If this connection is loose or corroded it can also interfere with proper operation of the range.
Before replacing the power cord, unplug the appliance or shut off the power at the fuse box or breaker panel to avoid an electrical shock hazard. When disconnecting wires, it is often useful to take one or more close-up photos to guide you later in the proper reconnection of the wires.
Start by by unplugging the appliance.
Remove the back panel of the range, or if present the access hatch near the power cord. It may be fastened with several small screws.
Disconnect the strain relief device that secures the power cord as it enters the appliance.
Note the location of each wire from the power cord and where it connects to the terminal.
Disconnect the power cord from the terminal block.
Reconnect the new power cord to the terminal block and secure each connection.
lug in the range, turn on the power and test the range for proper operation.
Before replacing the power cord, unplug the appliance or shut off the power at the 
