Car park lights design element question.

[rolyberkin]

I have a question involving 11 X 150w son lamps in a car park, on a practical note and to prevent losing all the lamps going out if one blows and trips the rcd, would it be preferrable to run individual cables to each lamp or a radial circuit with say three or four on each and a slightly larger csa cable? My thinking is the best design would be individual feeds each fed by an rcbo? What would happen in the real world?

 

[telectrix]

is RCD protection required?

 

[Pete999]

Two radial and stagger the fittings
Circuit 1 Lamps 1,3,5,7
Circuit 2 Lamps 2,4,6.8.10
Simples

 

[rolyberkin]

is RCD protection required?

Yes, brought in under new regs, haven't got book with me so can't quote section.

 

[telectrix]

Yes, brought in under new regs, haven't got book with me so can't quote section.

new one on me then. afaik, it's still sockets, special locations, and cables buried in walls.

 

[i=p/u]

Do you not use Lucy's with smaller fuse at each fitting

 

[Simonslimline]

Yes, brought in under new regs, haven't got book with me so can't quote section.

Are you referring to section 714?

 

[rolyberkin]

Are you referring to section 714?

Yes, 714.1 however having re read it it doesn't apply, the RCD bit only applies to bus shelters, telephone kiosks, advertising panels etc The stuff which is likely to get vandalised.

 

[telectrix]

so ditch the RCD, daisy chain the lights, fit individual MCBs or fuses at each. better still, go for LED fittings.

 

[rolyberkin]

so ditch the RCD, daisy chain the lights, fit individual MCBs or fuses at each. better still, go for LED fittings.

Thanks, personally I would be putting in LED's but the spec says 150w SON! Who am I to argue

 

[Simonslimline]

Yes, 714.1 however having re read it it doesn't apply, the RCD bit only applies to bus shelters, telephone kiosks, advertising panels etc The stuff which is likely to get vandalised.

Cool, i thought so. College assignment i take it?

 

[rolyberkin]

Cool, i thought so. College assignment i take it?

Yep for unit 308, I have asked for clarification today as to whether it is part of the course, it seems like a hell of a lot of work, just want to make sure I get some credits for it