Why does my dishwasher need to be connected to a separate group
A dishwasher consumes more energy than the average kitchen appliance and should therefore always be connected to a separate group. On this page, we explain why.
Why you need to connect your dishwasher to a separate group
The installation standards of NEN (Nederlands Normalisatie Instituut) were created for high-power electrical appliances. Devices such as an electric stove, microwave, oven or faucet with boiling water must all be connected to a separate group according to these general provisions. The maximum capacity of these devices is over 2000 watts and for this a separate group is required according to this rule.
The power of a stove sometimes even exceeds 4000 watts, which even requires a double group. An exception is made for appliances that are used for less than 10 minutes at a time, such as kettles, coffee makers and blenders.
Start the quick decision aid
find your ideal dishwasher
Dishwasher decision aid
Can a dishwasher and an electric hob be connected to one group
Large appliances with high power really should both have a separate group. The power of the appliances is too high to share a group. So if you connect a dishwasher together with the oven to the same group, it is against the installation standards. What happens then is that the group gets overloaded and the resulting damage will not be compensated by the insurance company. They have included in their conditions that damage is only compensated if the electrical installation meets the requirements established by the NEN. A dishwasher can be connected to a group with other devices, provided they have a low power.
If you have a new kitchen installed with more appliances, it may be that you do not have enough groups. You may then be short of capacity and one group.
Replacing your distribution board
For a new dishwasher, you may need to replace the distribution board or expand it with additional groups. It is better to leave this electrical installation to an electrician, because replacing your distribution board yourself without any knowledge of the meter box is virtually impossible.
Having your own group made by an electrician also gives you the guarantee that the electrical installation meets the set standards. Fortunately, most new homes already have their own group for the dishwasher, so you don’t have to go to any extra trouble.
Does an energy-efficient dishwasher also need its own group
Yes. Even though the consumption is a lot lower, the power of an energy-efficient dishwasher is still well above the standard of 2000 watts. If you don’t want to go to the trouble of creating one extra group in the meter cupboard, you can’t circumvent the standards by purchasing an energy-efficient dishwasher.