CELMA position paper 
T5 and T8 Fluorescent Lamp and LED Lamp/Module Adaptors
"Retro-fit Conversion Units” for T8, T10 & T12 Luminaires

If you want to improve the energy efficiency of your lighting installations, the most effective way, which will also improve the lighting quality whilst reducing maintenance and operating costs, is by the installation of a new high efficiency lighting installation.  

However, there may be reasons why the lighting installation is not replaced with a new high efficiency installation on every occasion when some upgrading is necessary. Therefore when existing luminaires have their lives extended e.g. by the fitting of new control gear and lamps, considerations need to be made as to how these modifications are made to the existing luminaires.

Changes to the existing luminaires may be simple “add-ons” (adaptors) which allow the fitting of a low energy control gear and a new light source, through to complete replacement of the internal components of the luminaire. Sometimes these modifications would be made off site but more often they are made in situ. The simple “add-ons” create great concern in view to the safety and the product performance.  

In the Document below, CELMA highlights the risks and gives recommendations to avoid any danger.