Water Heater Plug Wiring
Also the pre made cord sets are almost always of wire too small for the amperage.
Water heater plug wiring. Next take the black wire from the feed circuit and one wire from the water heater it doesn t matter which wire and twist them together. Yes you can wire a 240 volt rated water heater with 120 volts exchanging the second hot red wire for a white neutral wire to the neutral bus. Secure them with a wire connector and wrap electrical tape around the connection for additional safety. The traditional way is to have the disconnect mounted on the wall next to and not behind the water heater with the final bit of wire contained in flex can a cord and plug be used.
The improper wiring of a water heater to a three pin plug by workers unlicensed to do electrical work after a housing board upgrading programme was behind the death of a 15 year old boy who was. Take the black wire from the circuit and any wire from the water heater and connect them twist together and secure with a wire nut. The ground wire is attached to the green ground screw which is in the same wiring junction box compartment which is built into the top of the water heater. Opinions are somewhat divided because you really are not to use flexible cord as a substitute for permanent wiring.
Wrap the ground wire around the ground screw and tighten it down securely. Wiring an electric water heater does not require that you use a plug in device. Therefore an extra conductor is not required. If the incoming electrical circuit has a black red white and ground wire then the white or neutral wire is caped off and not connected unless your water heater requires a separate neutral wire.
At the water heater the black circuit wire connects to the black wire lead on the water heater and the white circuit wire connects to the white wire lead on the water heater. A conventional electric water heater will come with a black wire and a red wire which are connected to the wires of the same color as described above. Because of ohm s law and the fact that the resistance of the circuit stays the same half the voltage means the watts of heating energy generated is reduced to one quarter of what it was at 240 volts. The white circuit wire should be wrapped with black or red electrical tape near the connection at both ends of the circuit at the water heater and at the breaker box to indicate that it is a hot wire not a neutral wire.
Do this at the breaker panel too. The bare ground wire of the incoming circuit is bent into a clockwise hook shape and placed under the green ground screw and secured tightly. Most water heaters are wired with 10 2 w ground shielded cable. Take the white wire hot line and wrap electrical tape over its insulation this is for identification purposes.