Electrical – How to wire cables – 2-gang switch 3 lamps

electricalwiring

I've got a 2-gang switch in the wall. It's connected to a cable in a ceiling, that contains 4 cables: black, brown, blue and yellow-green (not included in schema).

Schema:
enter image description here

Expected result:

  1. Left part of switch turns on left lamp.
  2. Right part of switch turns on right lamps.

I'm not sure if my schema is correct. Could anyone take a look and validate, please?

EDIT:

Thank you gentlemen for your input so far.
I need to clarify some things. I'm from Poland, so colors are standarized for Europe:

  • blue – neutral
  • green-yellow – protective conductor
  • brown – hot
  • black – hot

Here you have a switch. Two buttons:

  • left (black hot cable) – turns on/off left bulb.
  • right (brown hot cable) – turns on/off two right bulbs.
    Here you have a switch.

Schema:

This is a cable from the ceiling. Colors are I already mentioned above.
enter image description here
Will it work as I expect?

Best Answer

If the only cable at the switch is brown-black-blue then blue is not a neutral.

Brown should be live (hot) to the switch; blue and black should be switched lives and should both be over-sleeved brown.

At some point you have to provide a neutral to the lights, as neutral is not run through the switch.

enter image description here

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