LED ceiling tiles startup current

[joelypops]

I have been asked to quote a shop fit out that will have 52x 45w LED ceiling tiles overall. they would like 12 switched at a time if possible, but on a previous job I only had 6 on one switch and had to use a 10A C-type MCB just to sto pthem tripping out on startup. I was thinking of wiring them in 2.5 and using a 20A C-type for each bank of 12 unless anyone else has any other clever ideas?

Cheers,
Joel.

 

[VoltzElectrical]

Try contacting the manufacturer to see what they recommend?

 

[Andy78]

As above, the manufacturer should be able to supply inrush current data to help with your calcs.

Switching via contactors would be the obvious solution to large switchways.

 

[Guest77]

I have been asked to quote a shop fit out that will have 52x 45w LED ceiling tiles overall. they would like 12 switched at a time if possible, but on a previous job I only had 6 on one switch and had to use a 10A C-type MCB just to sto pthem tripping out on startup. I was thinking of wiring them in 2.5 and using a 20A C-type for each bank of 12 unless anyone else has any other clever ideas?

Cheers,
Joel.

We did an office block with hundreds of those exact lights a few months back and had around 10 on each PIR, they were on c rated MCBs and we never had any issues.

 

[Farmelectrics]

Why 2.5 and why 20a

 

[SPARTYKUS]

I LOVE contactors.

 

[soulman]

Hi, i contacted the manufacturer for the jcc sky tile 34w, the inrush current was 1.5A per unit.

 

[joelypops]

I need to get a definate answer on which tile they want. Going on 1.5A inrush though to switch 12 at a time I'm going to need a 16A ish.. possibly going to go the contactor route.. typically they are happy to spend over £5000 on ceiling tiles but want to question every other minor point on my pricing...

 

[nickblake]

like Andy has said multiple circuits via a contactor array one switch problem solved