Emergency lighting

[Farmelectrics]

Besides running men and emergency exit signs over exits staircases etc got me thinking is there a set ratio of how many emergency lighting would be installed in offices classrooms etc

 

[Megavolt]

'Lux' and 'lumens' are not interchangeable units, although related.

Lux - Wikipedia, the free encyclopedia

Saved me a job there thanks. Surprising a LED manufacturer is unaware of this

 

[Welchyboy1]

Again off the top of my head 8w tube fittings would need to be spaced 11-12m apart to achieve 1 lux on edge or overlapping areas. Led i would think would easiler give you more spacing

No where near 11-12m!, it normally just under 2m from a door or wall and 6m between fittings to achieve 1lux

you may be referring to the old regs which was only 0.2 lux on escape routes, this is now non-compliant

you also need open area lighting in all rooms over 60m2 and with emergency escape routes running through it, this needs to be lit to 0.5 lux min

download the ICEL emg lighting spacing table data off google, it has the spacing data for most standard types of fittings, you can also use this as your evidence for photometric data compliance within your emg cert, which is invalid without

 

[tazz]

No where near 11-12m!, it normally just under 2m from a door or wall and 6m between fittings to achieve 1lux

you may be referring to the old regs which was only 0.2 lux on escape routes, this is now non-compliant

you also need open area lighting in all rooms over 60m2 and with emergency escape routes running through it, this needs to be lit to 0.5 lux min

download the ICEL emg lighting spacing table data off google, it has the spacing data for most standard types of fittings, you can also use this as your evidence for photometric data compliance within your emg cert, which is invalid without

Yes 6m per side so spacing from on em light to the other 12m between the two.....if a em light cant produce 1 lux in all positions over a 10mx10m I would look at new lighting

 

[MDJ]

Amazed no one has advised you to talk to a professional regarding this. When designing emergency lighting systems you need to know your stuff, we can all advise you all day long, but IMO and IME getting someone else to take the design responsibility is the best way I think, We all know about 2 lights lighting each escape route and signs showing the way out etc, but I like someone else to take the pressure in this easily installed but difficult designed area, an electrical engineer via a consultancy would be my preffered option

 

[Welchyboy1]

Yes 6m per side so spacing from on em light to the other 12m between the two.....if a em light cant produce 1 lux in all positions over a 10mx10m I would look at new lighting

No its 6m between fittings, the spacings take account of the drop in the lumen output due to age/dust on lense etc a worst case condition if you like

this is why its not good enough to use a lux meter on new fittings to check lux levels, as the lamps are brand new and clean, and will easily acheive 1lux

 

[tazz]

No its 6m between fittings, the spacings take account of the drop in the lumen output due to age/dust on lense etc a worst case condition if you like

this is why its not good enough to use a lux meter on new fittings to check lux levels, as the lamps are brand new and clean, and will easily acheive 1lux

Would hope on a new fitting I would be see a least 5-10 lux......that whats I would be be designing and cading positions on the drawings to achieve this.