How to find your connection type

1. Find your meter cupboard

Dutch homes call this the meterkast. It's usually a narrow cupboard near the front door, in the hallway, or in the garage/basement of older homes. You're looking for a grey or white metal box containing your smart meter and a row of switches.

2. Look for the main fuse block (hoofdzekering)

This is usually near the top, often sealed with a small lead or plastic security seal by the grid operator — that seal means don't touch it, but you can absolutely read it. Count how many fuse holders are bundled together:

One fuse holder = single-phase. Three identical ones bundled together = three-phase. This is the fastest way to tell at a glance, before you even read the label.

3. Read the rating

The amperage is printed directly on the fuse holder or on a small label next to it — look for something like "25A", "35A" or "50A". Combine that with what you counted in step 2:

You see	Your connection
One fuse, "25A"	1x25A
One fuse, "35A"	1x35A
Three fuses, "25A" each	3x25A
Three fuses, "35A" each	3x35A
Three fuses, "50A" each	3x50A

Can't find it, or it's not labelled clearly?

Two reliable backups:

• Check your annual energy bill (jaarafrekening) — connection size is sometimes listed as "aansluitwaarde"
• Contact your regional grid operator (Liander, Stedin, Enexis, Rendo or Coteq, depending on where you live) — they can tell you directly using your address