Wiring 2 Gang Light Switch - what is this wire?

Bes

Bes

Soldato
Joined
18 Oct 2002
Posts
7,318
Location
Melbourne
Hi

I am trying to change the plastic white switches & sockets fitted during our recent renovation for some brass ones. All good so far apart from this 2 gang switch:

This controls a wall light and a ceiling light (Both independent, this is the only switch for them)

Wiring it seems pretty straightforward:

Live from the mains goes into L connectors at top. One per switch

Live to light goes from the L2 connectors at bottom One per switch, presumably as each only controls 1 fitting in the room

What is confusing me is a wire that bridges the 2 top L connectors together. Why is this given both appear to be powered anyway? Do I need it?

hrXzWd2.jpg

The switch I am fitting has the same configuration as this, except what is labelled as L in the photo here is labelled as COM (Common) on my new switch.

QMj9v8F_d.jpg

Thanks for any help you can give!
 
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