Immersion heater - wiring question

sharp90br

Hi I needed to change my switch for my boiler, but looks like this new swtich that I bought has different entrances for the wires.

I followed the old wiring but looks like it is not heating.

Can anyone help me please?

my old one (pic 1 and 2)

Pic 3

kirving

I tend not to like the default position here if people who say "hire an electrician" to people who might have a question - but hire an electrician.

Some constructive criticism...

1. You can't use red heatshrink for the earth.
2. The box must be secure on the wall.
3. You absolutely cannot just stuff the wires in as best they fit and leave the individual strands exposed. They can/will fall out or short off something else.
4. The above are very basic to be honest, but if someone does want to help, diagram is below.

irishkopite 2011

Looks like you will have to link L-out to COM.

sharp90br

Thanks! That's what I thought that was missing a 2mm wire to link in both.

sharp90br

https://www.boards.ie/discussion/comment/120555578#Comment_120555578

Thanks for your position on this.

Regarding the red wire for earth, it wasn't me exactly hehe, I just opened the box to change the current switch to a new one, and it was exactly like the picture.

Anyway, thanks, and I got all you said.

kirk.

Those need a link as said

Immersions can be a minefield for DIY with faults/no rcd present, and wire colours

They give trouble after when everything's not tightened up at the switch

kirk.

https://www.boards.ie/discussion/comment/120555578#Comment_120555578

Simple job when you know what you're doing but its almost impossible to give someone instructions on wiring immersion heaters

Theres the links and the cable colours, some switches are marked L1 L2, faults and RCDs , tightening cable connections , there's about 6 or 7 things to go wrong

Chances of getting it right on DIY are about 50/50 at best