Earth wire Argghhhh

[C0WBOY]

I'm no sparkie but when it comes to replacing a tatty light switch like for like I don't mind doing it myself other wise I will call an Electrician.

I was going to swap out my current Honeywell Wireless Thermostat with a nest. They both use an equivalent of nest heatlink and it all looks straight forward

From it looks like the
Honeywell to Nest
N > N
L > L
A > 2
B > 3



On the 2nd Gen nest heatlink The T1 has an earth symbol on but I'm not going to using the 12V so Im left with an earth wire. Do I just cut the earth wire and stick some electrical tape over it.

(it would have been easier with a 3rd Gen Heatlink as that has an earth connection).
Any help would be appreciated. Ta

 

[EFLImpudence]

Do not cut it. You might need it in the future.

Just put it in a separate connector and position it out of the way.

 

[EFLImpudence]

N > N
L > L
A > 2
B > 3

Correct

 

[C0WBOY]

Wow thanks for the quick response Apologies but being a thicko but

what do i need to cap the wire off safely

1 of these
16A 12-TERMINAL TERMINAL STRIPS 10 PACK (91532)

or
maybe one of these

CHOCBOX CONNECTOR BOX (54936)

or something else.

 

[EFLImpudence]

what do i need to cap the wire off safely

1 of these
16A 12-TERMINAL TERMINAL STRIPS 10 PACK (91532)

Yes, but there are smaller 5 Amp ones.
https://www.toolstation.com/connector-strip/p88321

 

[ericmark]

In practice I agree with @EFLImpudence but in theory the earth goes to T1. It is shown as going there, as you have realised if not using the 12 volt supply it does not NEED to be connected, we have three extra low voltage options SELV (S stands for separated) PELV (An extra-low voltage system which is not electrically separated from Earth) and FELV (An extra-low voltage system in which not all of the protective measures required for SELV or PELV have been applied.) The Nest is an FELV system so it is up to you.