⚠ Before starting any electrical installation remember that all local building codes, safety regulations, and equipment requirements must be followed at all times.
⚠ The electrical work should be carried out by a qualified installation engineer.
⚠ Plan and design electrical works so that the load requirements, voltage, current, and desired functionality of the electrical system are taken into account.
⚠ Determine the maximum operating current.
⚠ Choose conductors that comply with local regulations.
⚠ Do not exceed power limitations.
⚠ Choose a cable that is suitable for the installation.
⚠ The VOOL Charger must be grounded via permanent electrical installation. The charger will not pass its ground assurance test without a suitable ground connection.
⚠ Turn off the power supply to the area where the installation will take place and take all appropriate safety measures.
⚠ Gather all necessary equipment, including wires, connectors, fasteners, etc.
⚠ Test the electrical systems to ensure that they are functioning correctly and safely using appropriate testing equipment.
Conductor cross-section
Minimum 2.5 mm² for 11 kW (16 A)
Minimum 6 mm² for 22 kW (32 A)
Electrical conditions in the facility and cable lengths may require a higher cross-sectional area to meet the triggering conditions.
A five-core cable with 6 mm² conductors (5G6 or equivalent) covers a 22 kW three-phase installation in typical conditions.
Space in the distribution panel
Plan for, per charger:
Two three-phase circuit breakers — six standard DIN modules
One three-phase residual-current device — four standard DIN modules
Confirm against local regulations, which may require a different protective arrangement.
Run a data cable at the same time
If the site has — or may later have — a VOOL LMC for load management, pull a CAT6 cable from the distribution panel to each charger while the walls are open. The LMC communicates with the charger most reliably over a CAT6 cable, and retro-fitting one afterwards is the expensive part of adding load management later.
Use shielded cable with metal connectors on longer runs and anywhere the data cable runs alongside power cables. Shielded cable fitted with plastic connectors provides no shielding at all.
If the charger will use Wi-Fi instead
Check the signal at the charger's intended position before committing to it. Avoid placing the charger on the opposite side of concrete, masonry or metal studs from the access point, and remember that an LMC mounted inside a metal cabinet will lose most of its signal — an external antenna positioned outside the cabinet solves that.
See also Choose a location and Installation guide - VOOL Charger.