din rail timer, light switch override for outside lights

[ianbrookes]

I am looking for honest advice. I am a newbie but fully qualified domestic installer but have never done this install before.

I have an MK timer switch MK 5731s (din rail mount) an MCB for outside lighting (with RCD protection).

for cables I have a three core + earth running from the CU to the switch and an 1.5mm SWA 3 core running from the switch to the lighting transformer.

the customer wants the switch to override the time when required.

I am looking for wiring advice please.

 

[ackbarthestar]

override for both on and off is required..

If you use an electromechanical solution then you either have double ganged 2-way switches wired in series or a single pole 3-way rotary switch. If you consider an electronic solution you maybe able to find a press button three way alternative.

 

[Knobhead]

It can be done and using the cable you’ve installed. It gave me a head ache. You do need a two gang two way switch.

http://www.mkelectric.com/Documents/English/EN%20MK%20Installation%20Manuals/Circuit%20Protection/05731%2005732S4%20leaflet.pdf

View attachment 10048

 

[spark 68]

Originally Posted by ianbrookes
override for both on and off is required..

Then as others have said you will need a 3 position switch, at the very least.

Pos 1 = timed L feed
Pos 2 = No feed
Pos 3 = Perm. L feed

N= Common to load (not switched)

 

[Knobhead]

Then as others have said you will need a 3 position switch, at the very least.

Pos 1 = timed L feed
Pos 2 = No feed
Pos 3 = Perm. L feed

N= Common to load (not switched)

The others didn’t think about it

 

[Knobhead]

This shows using the other set of terminals and the cables

View attachment 10051