EBS/Specific/TBT-EBS-007

EV Charging Point Installation

Electrical Building Services › Specific › EV Charging Point Installation

Presenter		Project
Location		Date

EV charging points are installed in car parks, residential developments, and commercial premises.
Installation involves electrical work including cable runs, earthing, RCD protection, and connection to the supply.
The IET Code of Practice for EV Charging Equipment Installation sets out the technical requirements.
High-power DC rapid chargers operate at voltages up to 1,000V DC — specialist training is required.
Cable routing through car parks and external areas requires trenching, ducting, and surface protection.
Earthing and protective bonding are critical safety measures to prevent electric shock to users.
The Electricity at Work Regulations 1989 and BS 7671 wiring regulations apply to all EV installations.
Installers must be competent and registered with an appropriate certification body for the work.
External installations are exposed to weather — all equipment must meet the required IP rating.
Testing and commissioning must verify earth fault loop impedance, RCD operation, and insulation resistance.

Electrical safety	Incorrect installation creates shock risk for both installers and end users.
DC hazard	High-power DC chargers present arc flash and sustained shock risks different from AC.
Public use	EV chargers are used by untrained members of the public — safety margins must be high.
Legal compliance	BS 7671 and Electricity at Work Regulations require competent installation and testing.

Don't

Confirm you hold the correct qualifications and certification for EV charger installation.
Follow the IET Code of Practice for EV charging equipment throughout the installation.
Install appropriate RCD protection and earthing as specified in the design.
Test earth fault loop impedance, insulation resistance, and RCD operation before commissioning.
Use IP-rated equipment suitable for the external or exposed installation location.
Isolate the supply before making any electrical connections to the charger.
Route cables through ducts with adequate protection from vehicle overrun.
Label all circuits and isolation points clearly for maintenance access.
Commission each charger through a full charge cycle to confirm correct operation.
Provide the client with test certificates and operating instructions on completion.

DON'T install EV chargers without the required electrical qualifications.
DON'T skip testing and commissioning before handing over to the client.
DON'T use equipment rated below the required IP standard for the location.
DON'T work on DC rapid charger connections without specialist DC training.
DON'T route cables across car park surfaces without vehicle protection measures.
DON'T omit RCD protection or earthing from the installation design.
DON'T energise the charger before all testing is complete and recorded.
DON'T install chargers without checking the existing supply capacity is adequate.
DON'T leave cable joints or connections exposed to water ingress.
DON'T assume domestic installation rules apply to commercial EV charging systems.

See also: Electrical Building Services Safety | Distribution Board Installation

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