EV Charger Installation Guide

What there is to know

EV Charger Installation Guide

What there is to know

Terminology

When it comes to considering what charge point is right for your needs there are several things to consider. The information in this EV Charger Installation Guide will help you.

Smart chargers

Smart chargers enable a user control via a manufacturer’s app that is downloaded to their smartphone. The EV charger is connected to the internet via a dedicated local network cable, 4G dongle or Wi-Fi, all are methods of connectivity. A smart charger can be controlled via an app or by the controls on the charger if the app is offline.

The app will allow the user to “interrogate” the charger from anywhere, at any time. There are various functions which may include starting/stopping of a charge cycle, energy monitoring, setting up a personnel charge schedule that might include a reduced tariff.

Power ratings of chargers

For those charging from home there are three different power ratings to consider.

  •  A 3.6 kW charger will deliver its charge at 16 Amps, these units are considered as slow chargers. Typically a 40kWh battery would take around 12 hours to receive a full charge from empty, which isn’t a great improvement on a normal 13 Amp household power socket (which is not a good idea to do extensively as it could lead to overloading a 13 Amp outlet) We do not recommend this type of charger to owners of full E.V’s as they have limited power output but may suit hybrid owners. However, it’s probably a good idea to future proof.
  • A 7.2kW charger will deliver its charge at 32 Amps, these units are considered as fast chargers & will charge a 40kWh battery approximately 6 hours. Typically, most people will do a large percentage of their charging at night so this type of charger is what we recommend to customers.
  • A 22kW charger is a 3 phase charger & will deliver its charge at 32 Amps per phase, so, 3 lots of 32 Amps! Unfortunately a vast majority of homes in the UK are single phase so won’t be able to utilise this type of charge point & they are much more expensive however, a 22kW charger could charge a 40kWh battery in approximately 2 hours.

Solar integration

If you have solar panels then being able to use the energy that you have produced makes perfect sense. This type of charger monitors the grid supply as well as any self-generated energy & is capable of diverting energy produced directly to an electric vehicle. The myenergi Zappi was first to market with this kind of technology but now this is fairly commonplace amongst the leading charging manufacturers.

Tethered/untethered

A tethered charge point comes with a fixed charge cable that is permanently attached to the charger so no need to retrieve a charge cable from storage whenever you charge, which is quicker & more convenient, although some people find a charge lead to be unsightly.

An un-tethered charge point has no cable attached & requires the user to plug a lead into the charger before use, come rain or shine. Preferred by some users as they don’t have a cable on display & can avoid cable theft.

Most people prefer the convenience of a tethered charge point.

Aesthetics

For some people, first on the list will be functionality but for others their primary concern is what the charger will look like once installed. After all, it is likely that the charger will be at the front of their house in a prominent position, fortunately there is a charger for all tastes amongst our recommended chargers.

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