Two way light switch with a difference!!!

[kkkkk]

I would be very interested to have everyone's comments on the safety aspects of this........

I have found a light switch in a commercial building which is wired up so that when it is in the "on" position, it switches a light on to be used in the day, but when it is in the "off" position it causes another light to be switched on to stay on all night (which is a low powered light). Therefore the switch is not an isolator, in either position there is a light switched on.

This has been wired this way intentionally.

Any comments?!!!

:90:

 

[HandySparks]

I'd be very interested to hear how that works - sounds quite technical to me

Pretty certain the switch was one of these:
Buy Flow Sensors, Switches & Indicators SPCO high power flow switch,15mm dia Novotech Controls 615 1100 003 online from RS for next day delivery.

The shower's pumped, so it doesn't restrict the flow significantly. The switch is just wired between line and the switched input to the timer, which might otherwise be fed from the light switch.

 

[kkkkk]

I like that!!!!!
arty:

 

[snowhead]

I've got a 2 way switch similarly wired at home.
One position the hall light is on, the other position a PIR outside is enabled which switches on the Hall light if activated.

Anyone coming towards the front door is met with the Hall light coming on.

 

[Stuuk1]

Provided it's properly thought out and safe, there are a lot of "non standard" things you can do with electrics. For example, I have a flow switch in the water pipe to the shower. It triggers a timer which supplies the extractor fan. The fan then runs during a shower and for 30 minutes after, to clear the condensation. It's not one of the usual ways of controlling a fan, but it suits me and is perfectly safe.

Ha! That's great, strange way of doing it but well thought out...

 

[Stuuk1]

I can't actually see a problem with the switch working in this way as long as both feeds are connected via the same fuseway and phase..

 

[robsparky1975]

Exactly my thoughts as above,cant see any problems with it,as long as both lights are on the same phase if not would require labelling of some sorts,would be a nice idea if the switch was etched showing what position of the switch did what but thats me being fussy.