Pre-wire Requirements

For the installation of Evnex E and X series Smart EV Chargers.

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Please Note

This document is intended to give guidance around pre-wiring requirements for the installation of Evnex E and X series Smart EV Chargers in a residential or light commercial setting.


7.4kW Single Phase – Residential

Cable Requirements:

• Customer/Electrician to run 32A 2+E dedicated supply cable and 2 pair KNX control cable (or equivalent) between the main switchboard and charger location. Consult with your electrician regarding cable size.

• At each end, there should be 1m cable length for termination of the cable.

• It is not necessary to separate KNX and supply cables.

• Cables must be installed to current standards and regulations.

• To avoid additional switchboard enclosures in the future, at least 3 spare ways should be available in the switchboard for the additional devices required for the charger.

• Where cellular or Wi-Fi connectivity is poor or nonexistent at the charger location, a data cable must run between the router, network switch, or data cabinet and the charger location. This cable must be physically separated from the supply cable.


Charger Installation Position:

• Standard charging cables are 5m in length, for universal (socketed) chargers, longer cables are available.

• The recommended installation height of a wall-mounted charger is 1.2m from floor/ground.

• Recommended cable exit point from the wall is 1.1m directly to the left of a stud or fixing. The charger should not be fixed to GIB alone.

• Where the charger is not installed within a direct line of sight of the switchboard, a 2-pole isolator switch will be installed adjacent to, or above the charger. Please consider the positioning of the isolator when installing the cables in relation to the charger. The supply cable must be run to the charger position described above via the isolator switch position. Please allow at least a 0.5m loop of cable at the isolator location for termination.

•Universal (socketed) charge points must be installed above 0.8m from the finished floor/ground level.


Confirmation/Verification:

• Where the cables have been installed by a registered electrician, we require a copy of the Electrical Certificate of Compliance for the cable installation.

• Where the cables have been installed by others, we require the following:

• Photo of the charger location (and isolator) including cables.

• Photos of the cables installed in walls, roof- or floor space where possible.

• Photo of the switchboard showing spare ways for the charger protective devices.

• Where the cables have been buried, we require photos showing the cables within the trench and the depth of the trench of at least 0.6m (please show this with a tape measure in the photo). We also require a photo showing the trench approximately half back-filled with electrical warning tape placed in the trench.


22kW Three Phase – Residential

Cable Requirements:

• Customer/Electrician to run 32A 4+E dedicated supply cable and 2 pair KNX control cable (or equivalent) between the main switchboard and charger location.

• At each end, there should be 1m cable length for termination of the cable.

• It is not necessary to separate KNX and supply cables.

• Cables must be installed to current standards and regulations.

• To avoid additional switchboard enclosures in the future, at least 5 spare ways should be available in the switchboard for the additional devices required for the charger, although 8 spare ways are preferable.

• Where cellular or Wi-Fi connectivity is poor or nonexistent at the charger location, a data cable must run between the router, network switch, or data cabinet and the charger location. This cable must be physically separated from the supply cable.


Charger Installation Position:

• Standard charging cables are 5m in length, for universal (socketed) chargers, longer cables are available.

• The recommended installation height of a wall-mounted charger is 1.2m from floor/ground.

• Recommended cable exit point from the wall is 1.1m directly to the left of a stud or fixing. The charger should not be fixed to GIB alone.

• Where the charger is not installed within a direct line of sight of the switchboard, a 4-pole isolator switch will be installed adjacent to, or above the charger. Please consider the positioning of the isolator switch when installing the cables in relation to the charger. The supply cable must be run to the charger position described above via the isolator switch location. Please allow at least a 0.5m loop of cable at the isolator location for termination.

• Universal (socketed) charge points must be installed above 0.8m from the finished floor/ground level.


Confirmation/Verification:

• Where the cables have been installed by a registered electrician, we require a copy of the Electrical Certificate of Compliance for the cable installation.

• Where the cables have been installed by others, we require the following:

• Photo of the charger location (and isolator) including cables.

• Photos of the cables installed in walls, roof, or floor space where possible.

• Photo of the switchboard showing spare ways for the charger protective devices.

• Where the cables have been buried, we require photos showing the cables within the trench and the depth of the trench of at least 0.6m (please show this with a tape measure in the photo). We also require a photo showing the trench approximately half back-filled with electrical warning tape placed in the trench.