L3 / Common question

[mole999]

Its ages since i've installed two way dimmers. I've installed all new wire which is not currently connected. Picked up the switch which is Common L1 L2, check the instructions which show L1 L2 & L3. The question is, is L3 the common. Rather than spend hours trouble shooting later can someone point me in the right direction. Manfacturer is closed today, and a web search and this forum for L3 is not throwing any light (pun). Help

 

[breezer]

you can not have 2 "ordainairy" 2 way dimmers connected to each other.

also see for refernce (top of electrics uk)

 

[mole999]

Taken as intended, although that did not answer the question. Is L3 Common, or have i missed something. I have checked again through the sticky

 

[ebee]

Taken as intended, although that did not answer the question. Is L3 Common, or have i missed something. I have checked again through the sticky

Most manufactures use com, L1 & L2 (though 1 way switching is L1 on some whilst L2 on others) if it`s noted as L1,L2 & L3 then usually L1 is common .
Hope that helps

 

[mole999]

Thanks, exactly what i was guessing it would be, unhelpful when connecting different marked fittings hence my original question

 

[kevplumb]

cant you put a meter across it

sorry if thats a dumb question (been eating lead again)

 

[mole999]

once i got ebee's answer it was so apparent that it was ludicrous. When treating Yellow as common, it was easy to see from the diagram, but i needed the nudge to get me going