2 Pole Isolator Question

[Too Late]

I need to wire in an isolator switch this weekend. It's for an air source heat pump.

Can I just double check this. L1 will be incoming live, L3 will be incoming live.
T1 is live to appliance. T3 is neutral to appliance

It's a BG 2P AX 32a ip65 isolator switch.





Incoming Supply:
Live -> 1/L1
Neutral -> 5/L3

Outgoing Load:
Live -> 2/T1
Neutral -> 6/T3

Earth to Earth terminal (side metal block)

Edited by Too Late on Saturday 28th June 16:24

[Yabu]

Too Late said:

I need to wire in an isolator switch this weekend. It's for an air source heat pump.

T1 is live to appliance. T3 is neutral to appliance
Incoming Supply:
Live -> 1/L1
Neutral -> 5/L3

Outgoing Load:
Live -> 2/T1
Neutral -> 6/T3

Earth to Earth terminal (side metal block)

Yes
Both cables want to come into the bottom of the isolator if it’s fitted outside (unless cables coming through a wall)
Don’t drill the top as water will get in.

Edited by Yabu on Saturday 28th June 17:01

[Too Late]

Fantastic. Thanks for replying.

[caziques]

Is it normal in the UK to switch the live and the neutral?

[finlo]

Yes, because the neutral can be live in some circumstances.

[LastPoster]

To an Air Source Heat Pump, yes.

[caziques]

Interesting.

Here in NZ, electrical boards are MEN (multiple earth neutral). All earths are joined on a big long brass bar, all the neutrals are joined on another - then the two bars are joined together. Not forgetting a big earth wire attached to a stake in the ground. Only the live wire is switched.