From 28th September 2022, new regulations in the industry require us to offer
all customers Surge Protective Devices (SPD) as part of an EV charge point
installation.
SPDs are used to protect the electrical installation, which consists of the consumer
unit, wiring and accessories, from electrical power surges known as transient
overvoltages. They are also used to protect sensitive electronic equipment connected
to the installation, in this case, your EV charge point.
Transient overvoltages are defined as short duration surges of electricity which occur
due to the sudden release of energy previously stored or induced by other means.
Transient overvoltages can be either naturally occurring or man-made.
Man-made transients appear due to switching of motors and transformers. Historically
this has not been an issue within domestic properties but more recently, with the
advent of new technologies such as electric vehicle charging, air/ground source heat pumps and speed-controlled washing machines, transients are more likely to occur
within domestic installations.
Natural transient overvoltages occur due to indirect lightning strikes most likely to
happen due to a direct lightning strike on an adjacent overhead power or telephone
line causing the transient overvoltage to travel along the lines, which can cause
significant damage to the electrical installation and associated equipment.
The biggest consideration is of course safety. Electricity is dangerous if handled
incorrectly and minimising risk is paramount. The real risk is serious injury or even loss
of life and although quite rare, still exists. With the correct care and protection, you can
ensure your family, home and car are safe.
Whatever the reason for purchasing an EV and home charger, it is vital you do proper
research to protect your family, your home and your vehicle.
If you decide not to proceed with an EV charge point installation with us, please ensure
you choose a provider who is qualified to install EV charge points, understands the risks
associated with the installation as a whole, and check they are 18th edition qualified
(also known as BS 7671).