One of the most exciting developments in the construction industry in recent times has been the modular building boom . With unprecedented demand for greener , faster and smarter building methods , the evolution of modular technology continues to shape the expectations of the construction industry and , therefore , the design of modular lighting control systems . At the heart of every modular lighting control system is its connectivity . Traditionally , the integration of luminaires and lighting system components was made possible with a six-pole GST connection system . In such instances , a black and grey connector configuration ensured a safe connection of the live , earth , neutral , maintained live and dimming pair , facilitating a connection from a lighting control module ( LCM ) to a luminaire or daisy chain system , via extender cables and tee modules .
Following concerns raised by the lighting industry , we are likely to see a transition to a black and blue coding system . While eventually this may be backed by legislation , it is already considered best practice to adopt this approach to coding .
Why the change ?
To understand the rationale behind the change , we need to look at the existing six-pole configuration , specifically , the grey
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‘ In the modular building industry , with its emphasis on speed and efficiency , it is vital to ensure the correct colour coding is selected for the product range being installed .’ |
connector itself , which acts as a mains connector . It has a leading earth pin , with live , earth and neutral clearly marked up as a means of denoting the relevant poles . The dimming pair are connected to the earth and neutral terminals , in what has now become standard practice within the industry . This means that the two terminals are now being used for two cables which have a specific function other than that indicated by the poles of the connector .
With the blue connector , by contrast , there is no leading earth pin , and the poles are marked one , two and three , to give a visual representation of the dimming pair . The impact of this is that the dimming pair can be connected to pins two and three , with the live connected to pin one .
Compatibility
The key thing to remember is that blue and grey connectors are not compatible due to the fact they have a different mechanical keyway , ensuring that mains and control remain separated throughout the system .
In the modular building industry , with its emphasis on speed and efficiency , it is absolutely vital to ensure that the correct colour coding is selected for the product range being installed on a project . Failure to do so can result in several potential issues , including compromising installer safety , damage to equipment and delays to the project due to ordering incorrect equipment – somewhat negating the benefits of a modular system
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in the first place . Crucially , this must remain consistent throughout the project , without mixing the grey and blue colour coding at any point .
As we continue the transition towards the new coding , it is essential to have a clear understanding of your requirements for leads and connectors to eliminate any potential problems with your project .
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Following concerns raised by the lighting industry , we are likely to see a transition to a black and blue coding system . |
August 2017 | 31 |