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



How much cable can I run between networked panels?

Depending on the type of network, for a simple radial, the limit is a total length of 1.5km for the network.  With a loop type arrangement, the distance permitted between panels is 1.5km with a total network length of 20km.  Please remember that the type of network installed requires the correct networks cards in each panel.

How many panels do I need?

This is very much dependent on the installation.  The cost of an addressable emergency lighting installation is dominated by the cost of luminaires and the panels are a much lesser peripheral cost.

Decisions on quantities of panels should be made in line with ease of installation and the choice of how to monitor those panels.

Each panel can monitor up to 996 lights, where the lights are wired 249 per loop.  Sometimes loop wiring can be costly and it may be beneficial to install a single loop panel per floor in a large building, rather than one panel in a central location.

It is always beneficial to not exceed 80% capacity on loops and panels, as this will allow for possible minor alterations and additions in the future without large scale changes.

Monitoring can be achieved by the use of serial to Ethernet converters and simply adding the panels to the sites local area network.

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.

Do I need to maintain the Lux Intelligent panel itself?

The panel is very much a fit and forget type device.  The uploaded data to the cloud provides all the information you require.  However, as with all systems, provision should be made for an annual inspection just to check the environment around the panel has not been changed or compromised.