Wiring new 2-way light switch into old code wiring

plsmith76 · 22 Feb 2020

Hi All,

Really appreciate help on this - getting myself somewhat confused.

Got a 2-gang 2-way light switch at bottom of stairs for hall and landing light and a 1-gang 2-way light switch at top of stairs for landing light. Want to replace switches with more modern ones, but can't quite figure out the old code wiring.

This is the downstairs 2-gang:
https://ibb.co/G9kchkn
https://ibb.co/CzFnbqG

This is the upstairs 1-gang:
https://ibb.co/ZJvRBFf
https://ibb.co/Gxt0XWV

This the replacement downstairs 2-gang:
https://ibb.co/nQwkXNL

And the replacement upstairs 1-gang:
https://ibb.co/Htt8cg0
Very grateful for any advice anyone can offer in wiring the old code into the respective new terminals.

Many thanks

winston1 · 22 Feb 2020

You wire them the same as the old ones. Only the labelling is different.

A = Com
A1 = 1
A2 = 2

B = Com
B1 = 1
B2 = 2 (unused).

sparkwright · 22 Feb 2020

Observe each individual switch has three terminals.

A = com
A1 = 1
A2 = 2

B = other com
B1 = other 1
B2 = other 2

plsmith76 · 23 Feb 2020

Thank you winston1, sparkwright - just confirming I wasn't going down the wrong path. Much appreciated.

plsmith76 · 23 Feb 2020

Grateful for one more QC if possible - this is 2-gang 1-way for main bedroom light and en-suite light. Very much appreciate if can confirm wiring:
https://ibb.co/xz30gGm

Again replacing with the modern 2-gang 2-way (but obviously wired as a 1-way):
https://ibb.co/nQwkXNL

Thanks in advance.

sparkwright · 23 Feb 2020

Same arrangement

A = com
A1 = 1
A2 = 2 not used

B = other com
B1 = other 1
B2 = other 2 not used

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Wiring new 2-way light switch into old code wiring

plsmith76

winston1

sparkwright

plsmith76

plsmith76

sparkwright

DIYnot Local

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