Most electric vehicle charging is done at home, typically overnight when you seldom need to use your car. You probably do the same with your mobile phone.
For many people, their car’s portable EV charger that plugs into a standard three-pin power socket gets the job done. But more and more EV owners want the option to charge their car more rapidly. They may be using most of the charge in a long range EV every day, which takes longer than overnight to recharge, or they simply don’t want to get caught out with a low battery when they need to get somewhere in a hurry.
The good news is there are options for electric car charging at home that let you safely put more charge into your car’s battery in less time. You just need someone with the knowledge and skills to check your home’s power set-up, discuss your EV charging needs, recommend suitable solutions and install the one you choose.
Here’s how Chargemaster makes it easy to install the right home car charging station:
• Through our nationwide partnership with certified electricians, we offer a no-obligation assessment of your home’s electrical supply, current use and potential EV charging requirements
• Based on this assessment and your preferences, we recommend the most suitable residential EV charging stations from our extensive range and explain the benefits of each, along with their likely installation costs
• If you decide to go ahead, you choose a solution and the electrician gets back in touch to arrange a delivery and installation time that suits
What are the benefits of a smart home EV charging point?
Our intelligent EV home chargers connect through bluetooth or wi-fi to a charge management app on your phone. This makes it super-easy to do things like:
• Remotely start and stop the charging
• Pre-set automatic start and stop times to take advantage of low-cost night rates for power
• Control the charging current and the charging speed
• Set a maximum percentage charge to help look after your battery
• See how long it will take to charge each time
• Check how full your battery is in real time while it’s charging
How much does it cost to install EV home charging stations?
This will depend on the solution you choose and how close your home’s electrical system is to what that charger requires. A 7kW home fast charger uses roughly the same power as an oven or heat pump. They usually need to be wired directly to your main switchboard, so they have their own circuit with a suitable fuse and robust wiring. The total power your home could potentially use, after your new charger is installed, may also need to be taken into account.
How do portable and home car chargers compare when it comes to electrical wiring?
Electrical power, measured in watts (W), can be calculated by multiplying the voltage by the current. Most standard three-pin home power sockets are designed for a current of no more than 10 amps, but 8 amps is more common. That means the portable charger that came with your EV probably has a maximum power output of 240 x 8 = 1,920 watts or about 1.9 kilowatts (kW).
Caravan-type outlets are designed for a current up to 16 amps, which increases the rated power output to 3.8kW. Portable chargers that can be connected to caravan-type outlets are also available.
Fast home chargers range from 7.4kW to 22kW.
A 7.4kW single phase charger on a normal 240V supply has a current of up to 32 amps. As mentioned above, that requires a dedicated circuit with some heavy duty wiring.
To avoid currents over 32 amps, chargers higher than 7.4kW require three-phase power. This is a bit like having three separate power supplies sharing the load. Three-phase power can be achieved by running new connections between your home and the street supply, and upgrading your switchboard. A small percentage of homes already have three-phase power for something like a kiln or heavy workshop machinery.
What size home fast charger does my EV need?
Electric cars have an on-board inverter, or charger, that converts AC electricity to DC to charge the battery. These inverters have a maximum power limit. A Nissan Leaf imported from Japan has an inverter with a maximum rating of 3.6kW, so a 7.4kW home fast charger won’t charge it any quicker than a standard 16 amp 3.8kW caravan-type outlet.
However, most other EV models have on-board inverters rated 6.5kW or higher. This makes a fast home charger a valid investment. On-board inverters are also becoming more and more powerful. For example, the Tesla Model 3 on board inverter is rated at 11kW.
Tap into our knowledge and experience
Choosing the best home EV charger for you and your home is as simple as giving us a call or dropping us an email. We check your home’s electrical systems and offer no-obligation recommendations before you spend a cent, so feel free to get in touch today.