lighting circuit with over ride retractable switch that will reset upon photocell deactivation

Thread Starter

littleluke14

Joined Aug 15, 2018
3
Hi all after some help on the design of a 230v circuit

We have some external lights, that need to be over ridden by a retractable switch. The retractable switch needs to be able to turn the lights on or off at any time, but will reset regardless up on photocell deactivation
The circuit photocell will allow the lights to come at dusk, all the way until dawn
 

Thread Starter

littleluke14

Joined Aug 15, 2018
3
Thanks for your help, Dave.
Is what I asked at the beginning even possible? As it is what the client is after..
An over ride that will cut out when its day... seems impossible
 

Dodgydave

Joined Jun 22, 2012
9,411
Thanks for your help, Dave.
Is what I asked at the beginning even possible? As it is what the client is after..
An over ride that will cut out when its day... seems impossible
Yes it's possible, the pneumatic switch uses a mechanical spring to relase it, so during the day( lights would be off) if you pressed the switch it will short out the photocell output and put the lights on for a set period upto 10mins (adjusted by spring tension) then turn off. If you use a Nema photocell the switch is wired across the Live in and Live out terminals.
 
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