Confusing Switch Terminals

[RedQuToxic]

Hi,
I am currently at the first stages of the 2365 L2 course. I’ve been wiring up one way, two way and intermediate switches. I understand how the wiring works when the switch has COM and the top terminal and then L1 & L2 at the bottom, but the only switches my test site seems to have are old style COM and 1Way terminals at the top and 2Way and LOOP terminals at the bottom.

Could someone explain the difference between these old switches and the new? I have attached pictures of the circuit that was shown to us, I understand how the intermediate is wired, but I don’t understand how the first and third switch is wired (this circuit has two ceiling roses)

Many thanks

 

[Fleeting]

The "loop" doesn't play a part in the circuit switching as such. With switches it is normally used for the neutrals which are now commonly connected through switches for future smart options.

 

[Fleeting]

One of the black conductors at the intermediate isn't identified as with the greys.

 

[SPECIAL LOCATION]

One of the problems you will have to get used to is that there is NO standard designation for every terminal on a light switch...

i.e. some manufactures may use "Com/L1/L2" but others "L1/L2/L3"!!!!

 

[Geoff1946]

I fins it helps understanding to draw out the circuit as a schematic. Just a rough sketch, nothing fancy.

 

[ProDave]

And if in doubt, learn how to use your tester on ohms range to confirm what switch terminal joins the which in the different switch positions when you encounter an unfamilliar type of switch.