An electric shower is able to heat water in the bathroom just before it is dispensed from the shower head. This is possible through the aid of an electrical heating element within the shower system. This type of shower can be easily wired after construction. You can accomplish this if you have a basic familiarity with electrical work. Nevertheless, the shower comes with a manual and probably templates that you would use to drill holes with. Before installing the shower, you would have to consider other factors, such as the amount of power being supplied.
Prepare cables or wires of the right thickness for your shower as specified in the installation manual. These wires or cables can be easily purchased from local electronic equipment stores. Determine if the power that is coming from the consumer unit is ample to sustain your type of shower. Bigger showers require more power to heat a greater amount of water.
Ensure all the required plumbing has been installed according to the manufacturer's guidelines and ground all the metallic pipes in the system. Isolate a separate circuit for your electric shower from the circuit breaker panel to prevent it from jamming the other circuits in the house. Connect the shower unit to the pipe and turn off the electricity around the working area as a precaution. Connect the cable from the circuit breaker panel to the shower's heating unit, whether in the shower head or separate and fixed to a wall, making sure the live wire is connected to the terminal marked "L" and the neutral to the terminal marked "N." Then seal the heating unit well enough to not allow any water in.
Find a convenient location to place the control switch. This is preferably just outside the shower booth. This will prevent water from reaching it. Make sure that the cable from the circuit breaker panel passes through this location. Install the switch into the wall and connect the live supply wire to it, leaving the neutral to run through. Make sure you also ground the socket to prevent any electrical accidents.
Clean up your working area then turn the power back on to test whether your shower is working properly.
Any electrical operation in the house requires a basic level of skill and knowledge of electricity. If you are unsure that what you are doing is right seek assistance from an electrician.