Lux Intelligent - Knowledge Base

We take being an easy company to work with very seriously and are constantly developing our customer support to offer more services, free, to customers.

What cable do I need for loop/network wiring?

Lux Intelligent requires data cabling to be suitable for the nature and size of the installation.  The lower quantity of lights and shorter loops, results in a narrower (and less expensive) gauge of cable being required.  Cable types are defined by their Belden equivalents (universally referenced).

Cable (Belden spec.)  Cable Size  Voltage Rating (V)  Maximum cable run in metres (per installed PLU)      
AWG mm2 100 125 150 175 200 225 249
8762/8205 20  0.5  300        1500  1300  1100  1000 
8760/8461  18  0.8  300              1500 
8719/8471  16  1.3  600/300              1500 

Similarly, a list with the choice of cables suitable for networking panels is shown below:

Manufaturer Model Cable Type
Belden 8205 Unscreened twisted pair 20 AWG (0.5mm2)
Belden 8461 Unscreened twisted pair 18 AWG (0.8mm2)
Belden 8760 Unscreened twisted pair 18 AWG (0.79mm2)
Belden 8762 Unscreened twisted pair 20 AWG (0.56mm2)
Alpha & BICC Alpha 2421 Screened twisted pair 18 AWG Type 2
BICC H8093  
Alpha & BICC Alpha 2411 Screened twisted pair 18 AWG Type 2
BICC H8091  
Belden   Screened twisted pair 20 AWG Type E buried distribution wire



Do I need to install isolators?

No isolators are required.  On detection of a short circuit, the loop will shut itself down to protect it.  In the event of an open circuit, the loop driver will continue to communicate from both sides, so as to loose communications with a minimal number of lights.

Does Lux Intelligent control my emergency light system?

No.  Lux Intelligent is purely an Emergency Light Testing system.  It's job is to monitor the status of your emergency lighting system, run scheduled tests on the luminaires in your emergency lighting network, and combine and present the data in an easy to understand formats. 

The only control Lux Intelligent has over the emergency lights is the ability to simluate an emergency situation, which should trigger the light to drop into it's emergency state.  It is the emergency lights response to this simulation which is tested, i.e. is it able to provide sufficient light whilst operating on the emergency supply (self contained or central battery), and once back on mains supply does the battery recharge.

How many emergency lights do I need?

There is no specific quantity of emergency lights specified.  The requirement is that you provide sufficient lighting levels, in the event of a mains failure, for people to safely exit from a building. 

Using the relevant standards BS EN 1836/BS 5266-7, the light level requirements for the building can be determined.  From that, the type and quantity of luminaires can be determined.