Consumer unit configurator

With three-phase I fit a 4-pole main switch and spread the circuits over the three phases. With single-phase everything runs over one wire, and then a fast EV charger, for example, won't fit.

The main fuse decides how heavy the main switch and the RCDs need to be, and how much an EV charger may draw.

The new unit gets at least as many circuits as the old one, so every circuit in the house keeps its own breaker. If you have more circuits now than I recommend, I add circuits.

On each floor I give the lighting and the sockets a circuit each. That way you're not left in the dark when the vacuum cleaner trips a circuit.

In a bathroom water and electricity come together: think of a towel radiator, underfloor heating or a mirror with a light. That's why every bathroom gets its own circuit.

A hob is the heaviest user in the house. It always gets its own circuits, and I check whether it fits on your connection together with everything else.

An oven draws 2 to 3 kW, and for a long time. Together with other appliances on one circuit, that circuit trips. Hence a circuit of its own.

A dishwasher heats its own water and draws full power while it does. Hence a circuit of its own.

A tap or heater like that keeps water hot all day and draws a lot of power while it heats up. Hence a circuit of its own.

A washing machine has a heating element. It gets its own circuit, and with three-phase a different phase from the dryer.

A dryer draws a lot of power for a long time. With its own circuit you don't have to choose between washing and drying.

A central heating boiler and ventilation must keep running if something goes wrong elsewhere. Hence a circuit of their own.

A water heater draws a lot of power for a long time while it heats up. Hence a circuit of its own, and it counts in full in the calculation.

An air conditioning unit draws 1 to 3 kW. Each unit gets its own circuit, so cooling never knocks out anything else.

A heat pump must not cut out because of something else in the house. That's why it gets its own circuit, and I check whether it fits on your connection.

An EV charger always gets its own circuit with its own RCD. The charging power decides how heavy that circuit is and whether everything fits on your connection together.

Every inverter feeds power back and gets its own circuit. With the power rating I check whether the circuit is heavy enough.

A home battery that charges from the grid counts in full on your connection. It gets its own circuit, so it doesn't knock out anything else.

Outside, everything is exposed to wind and rain. With a circuit of its own you know straight away where the problem is when the RCD trips after a shower.

A small board in the shed gets its own, heavier circuit from the consumer unit. The board itself and the cable to it I quote to measure.

The power of these varies a lot. I look at it myself first; then I size the circuit to suit.

I keep lighting and sockets separate on each floor, give the kitchen worktop two circuits and every bathroom one. That way as little as possible goes off when there's a fault.

An RCD switches the power off as soon as current leaks away, for example through a person. The choice is about how much goes off at once when that happens.

It's not compulsory. With solar panels or a lot of expensive electronics it's worth considering.

A wired doorbell needs a small transformer. In the unit it sits safely and neatly.

Space now is cheaper than a new unit later. I always keep four modules free.

On the photos I can see how your current unit is connected, how heavy your connection is and which meter you have. That way the quote is right straight away, and I won't run into surprises on the day itself.

On the photos I can see how your current unit is connected, how heavy your connection is and which meter you have. That way the quote is right straight away, and I won't run into surprises on the day itself.

On the photos I can see how your current unit is connected, how heavy your connection is and which meter you have. That way the quote is right straight away, and I won't run into surprises on the day itself.

For a business I put the company name and the KvK number (Dutch Chamber of Commerce) on the quote and the invoice.

With the KvK number I fetch the official name and address from the Kamer van Koophandel (Dutch Chamber of Commerce). You can still change everything afterwards.

Your name goes on the quote, so you can sign it.

You receive the quote and the confirmation of your appointment at your email address. I only call if something isn't clear.

With your address I work out the travel costs from Ulestraten and know where I need to be.

You only see the price in the quote: it depends on everything you have chosen, the photos and the distance to your address.