electricalkitchens
I need to connect the wires to my new IKEA cooktop. I learned from the website that the wire colors normally mean, blue=N, brown=L, and yellow/green=PE.
However, I have a (3-phase) cable with 4 colored wires: white, brown, blue and yellow/green.
Should I connect the the brown wire to L2 (2), white wire to L1 (1), if there are 5 connecting points, from top to bottom are 1, 2, 3(no connecting screw), N, and PE.
From denmark
This is how it should be wired using 220-240volt
BUT
There are some things to consider first!
The wires you are using to connect to .. are they the provided wires? there should have been a solid copper U bridge to connect L1/L2 to each other too!? Where is it?
If that is not the original cable you must consider using 2.5mm solid core cable
But also the wire that is in the plug should be the same/similar type! and it should be DEDICATED ONLY meaning no other plugs on that line
Before the stove you need an isolation switch (any electrician that says this is not needed is a bad electrician!)
And MOST IMPORTANT
Be warned if you do not meet these requirements you are putting your self at a electrical fire risk - and this is for ALL 220VOLT Installation anywhere in the world. If you have ome insurance and it burns down and they find that your new stove did not meet these electrical rules.. sorry - insurance void!! Even after installation you need a NEW electrical test certificate to certify there are no GROUND leaks! or micro shorts!
Most likely you connect blue to blue, and brown to red or brown.
BUT you should really test it with voltage and continuity tester to be 100% sure you're connecting outside thread of a bulb to neutral and the pin to live.
How I understand colours of your wiring at the ceiling:
I assumed you have 2 switches on the wall. If you have just one switch, then possibly one of the live wires is not connected at all OR the opposite: it's permanently connected (for remote-controlled lamps).
And wiring on the fixture:
About the testing you should do: With a neon probe on the wires coming from the ceiling: turn both switches "on" and verify which wires are live. Turn the switches off (or even better, ask someone to keep cycling one of them) to verify if they switch off properly and which switch is which circuit. With a continuity tester (eg. ohmmeter or a buzzer) on a disconnected fixture: check if blue goes to thread and if brown goes to base. Sometimes you can disassemble the fixture a tiny bit to simply see where the wires go.
Best Answer
Since you are in Denmark, your mains are 400 V phase-phase, and 230 V phase to neutral. The white and brown wires are two of the three phases, and the yellow/green is your ground. You don't have a wire for the third phase available.
The standard IEC color code says that blue is neutral, brown is L1, grey (what you call white) is L3.
Your stove, since it doesn't have the screw for L3, presumably only needs two phases of power, neutral, and ground. This is what you have available.
You should connect yellow/green to PE and blue to N. I'd connect grey to (1) and brown to (2), preserving the ordering of the phases. The configuration of these two "hot" wires likely does not matter, as the cooktop's loads are likely all connected phase->neutral instead of phase->phase.