PIR's with LED's

[eagleeye]

I've just wired up a few new lights for a back yard at a pub and have a problem. There are 4 28 watt 2D bulkhead fittings (which i have converted to LED with the retrofit replacement LED tray) and also a 400 watt flood with PIR. I have wired the PIR's together so any one of the 3 will turn on the lights. When i switched power back on it tripped the MCB. I disconnected the live feeding the PIR on the flood and MCB stayed on but none of the other lights came on. I have 240 volt going to all PIR's but just nothing coming out.

Anyone got any ideas ?

I got all the gear from CEF. The PIR's are Challenger SL180's and the LED retrofit 2D trays are Tamlite - Infinity 2D, 12 watt.

And to be honest the LED replacement i have fitted before have not been these plug in type

 

[Octopus]

High start up current? Take a lamp out and see what happens or change the breaker to a C curve?

 

[SPARTYKUS]

Have you tested the installation?

 

[eagleeye]

Yeah cheers guys. Murdoch I thought it may be the start up current on the flood that caused the MCB to trip but I just thought i would get an LED for the flood as long as i can get the PIR's to work. Yes Spartykus installation has been tested and all fine

 

[SPARTYKUS]

Awesome dude. Mr Murdochs idea is my first thought too

 

[Octopus]

Does anyone have any useful information on how much "inrush" LED's have on "average"??

I realise this is a difficult question...... but it needs asking!

 

[davesparks]

It all depends on the quality of the driver circuit, but don't be surprised if you get 8-10x inrush with the cheap stuff.

 

[eagleeye]

To be honest guys the whole pub could do with a complete rewire. there is 2 3 phase boards. one which is a crabtree with C50 type MCB's (so about 300 years old !!) and this is the now which supplies the lights outside and some existing lights in the kitchen so putting an LED in for flood would be much easier probably

 

[Octopus]

It all depends on the quality of the driver circuit, but don't be surprised if you get 8-10x inrush with the cheap stuff.

Hum... that could make life interesting!

How about the decent drivers?

 

[Richard Burns]

Are you sure you have the LED retrofits correctly wired, if there is a short because of existing ballasts still in place this may cause problems.
That PIR can only handle 200W fluorescent, so may be struggling with the LED inrush and the 400W flood.