carpark lighting help

[davelerave]

i'm changing the lights in a ground floor car park from T8 to T5
about 30 altogether

the majority will be on 24/7 ,but there's 3 areas with some daylight

so 6-8 lights total will be off during daylight hours


is there any simpler way of doing this without photocell/s outside,contactors and re-wiring etc.

thanks

 

[i=p/u]

just break up the circuit AND RUN NEW SWITCHED LIVE. ALL I CAN THINK OF NOW. BUT IM SURE YOU HAVE BETTER IDEA YOURSELF

 

[Mark_Burgess]

Dexeco have weatherproof T5 twins with microwave sensor and photocell built in, only catch is the price of the unit is £103.08
Their part is from their ECO IMPERVIA range:
EMP249 CF(E) MW1 PC
***Non-Corrosive IP65 2x49w Corridor Function PIR Sensor / Polycarb Diffuser LESS LAMP

Their standard T5 weatherproof is £32.90:

EMP249 PC
IP65 2x49w T5 Surface High Frequency / Polycarb Diffuser / LESS LAMP

Prices are from Dexeco directly and you will need to buy them from the wholesalers, I use Edmundsons who can get them, they charge me the quoted price and obviously get them cheaper.

Prices are without VAT and tubes.

 

[pennywise]

or just pop a photo cell into the relevant lights :bucktooth:

Remote photocell Remote photocell

 

[mogga]

I was just going to say that penny

 

[i=p/u]

cheap enough

 

[Mark_Burgess]

Only down side to those sensors is the light level and reflection may make them turn off, then on, then off.

I had that problem with a single 2D light under an office archway to a carpark, only cure was to use an external photocell.

 

[davelerave]

Only down side to those sensors is the light level and reflection may make them turn off, then on, then off.

I had that problem with a single 2D light under an office archway to a carpark, only cure was to use an external photocell.

that was my concern-lights going on and off with any 'internal' photocell solution


i don't need the microwave motion detection ,only p'cell-so that would be cheaper if available

dunno if it would work though with other lights nearby

 

[davelerave]

apparently it can be done alright

these have a differential or lux on /lux off settings
http://www.cpelectronics.co.uk/store/documents/categories/l2/WD250_ALC-PRM-VFC.pdf

i think this prevents the 'cycling'

could be tricky setting up though