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Help me understand, please
(lemmy.nz)
Why is A2 of the switch in the middle (E321) connected to L3 instead of neutral? Shouldn't it be neutral???
I think the switch is supposed to switch depending on whether there is 230V across A1 and A2. And the timer on the far right (E124) is supposed to accomplish this, the moment it receives "the signal" from my energy provider over mains electricity.
EDIT: Maybe A2 is not connected to L3. But it's NOT neutral either. There is:
0V between A2 and L3.
230V between A2 and neutral.
400V between A2 and L1.
400V between A2 and L2.
Yes this may be correct. There are two thin black wires besides the three phases and neutral coming from the main box below.
One of these black wires is connected to A2 of the contacter in the middle, of which I initially thought was just connected to neutral.