This is a continuation of previous steps. If you started here, please refer to previous steps to ensure you've followed all safety precautions.
The information on this web site is supplemental to the printed instructions that came with your water heater. To reduce the risk of property damage, serious injury or death, read and follow all labels on the water heater and the safety instructions in the printed owner's manual.
Turn the power to the water heater OFF at the circuit breaker (or remove fuses).
Using a non-contact circuit tester, check the power wires to make certain the power is off.
WARNING! Working on an energized circuit can result in severe injury or death from electrical shock. Check wires with a volt meter or circuit tester to make sure power is off.
Replace the plastic protector.
Replace the insulation.
Replace the cover.
WARNING! Be sure all covers are secured to reduce the risk of fire and electric shock.
Since voltage was incorrect, there is a problem with the wiring. Contact an electrician or qualified person.