EV charger in Hoofddorp

If your car is parked on the street, you apply to the municipality of Haarlemmermeer for a public charge point. It costs you nothing, you do not choose the brand, the post stays the property of the operator, and the municipality designates the location, usually with a traffic order attached. That is not a service anyone sells you, and it is better to read that here than to discover it after a sales visit.

If you have a driveway, garage or carport, it is a charge point on your own installation. That is electrical work in your consumer unit, and it is the only one of the two an installer is involved in. Everything below concerns that second case.

The commonest mistake at home is buying too much power. A car that arrives at six in the evening and leaves at eight the next morning stands still for fourteen hours. At 3.7 kilowatts that adds more than fifty kilowatt-hours, which for most cars is more than a full week of commuting. An 11 kilowatt charger puts the same fifty in over five hours, but the car is still sitting there for the other nine. Power you never use overnight earns nothing and does take space in your consumer unit.

That space is the real subject. A single-phase 35 amp connection gives the whole house about eight kilowatts; a three-phase 25 amp connection about seventeen. An 11 kilowatt charger draws sixteen amps per phase. Put an induction hob, a water heater and eventually a heat pump beside it and the main fuse, not the car, is the bottleneck. Load balancing measures what the rest of the house is using and throttles the charger back. It is not an accessory: it is the component that stops a home charger from turning into an upgrade of your connection.

That weighs more here than elsewhere. In Haarlemmermeer the network pressure is on the consumption side, and Liander has published congestion research for this area on exactly that side. A heavier connection is therefore not a form to fill in but a waiting time, and the higher standing charge continues for as long as the connection exists.

After 1 January 2027 a self-consumed kilowatt-hour is worth substantially more than an exported one, and an electric car is in principle the largest consumer in the house: 2,000 to 3,000 kilowatt-hours a year, more than a home battery ever cycles. In principle, because your roof's surplus arrives between eleven and three and the car is in a car park at work.

Three things decide whether that principle is worth anything. Whether anyone is home during the day. Whether you can charge at weekends, which for many households is the only time surplus and car coincide. And whether the charger can follow a surplus at all: one that only knows full power can do nothing with two kilowatts. A charger that throttles down to about 1.4 kilowatts, which is six amps on one phase, can run on sunshine alone. That is one line in a datasheet, and it is the difference between a car that absorbs your surplus and a car that adds to your evening peak.

A charge point belongs on its own circuit, with residual current protection suitable for the DC leakage a car can produce. Some chargers include that protection, others require it in the consumer unit; the difference shows up in the price and it is precisely the item a cheap installation leaves out. Then the cable run to the consumer unit, the conductor size that goes with its length, and how the cable follows the facade.

Running a cable across public ground is governed by municipal policy. A loose cable over the pavement is allowed almost nowhere; some municipalities permit a recessed cable channel in the paving and others do not. That is a question for the municipality of Haarlemmermeer rather than for your installer, and the answer decides whether a charger on your facade is usable at all when the car is parked on the street.