Friday, June 27, 2014

LED lighting installation - Safety issues

Today we look at some safety issues with LED lights;

1. LED Lighting (e.g. LED downlights, LED Strips, LED ceiling light) usually comes with a driver. Incompatible driver rating for the energy consumption (driving current, required initial voltage) of the lamp will result in flickering and eventual demise of the driver.

2. Insufficient heat dissipation and airflow for the LED lightings will spoil the bulb.
LED lighting generally is not as hot as energy saving bulbs (CFL) or incandescent bulbs. But, we still need to allow the heat that builds up on the printed circuit board (PCB) and LEDs to dissipate well. Failure to do so may result in LEDs changing colour (i.e changing from white to yellow), LEDs dying out or the capacitor melting away. If the heat gets trapped in a bulb with glass cover, the pressure may eventually push the glass cover outwards and fall out of the holder.

3. For LED light strips, it is always recommended for complete close circuit wiring for extended length (more than 5m) to the driver / power supply. This minimises any voltage drop at the end part of the strips, thus prolonging the lifespan and light quality.

4. Poor or unsuitable insulation of the lighting devices may result in the whole light fixture becoming live. This poses a serious concern as user can be electrocuted upon contact. Customers should pay close attention to the products displayed at the vendor's place and the products eventually purchased.

1 comment:

  1. this is a great tutorial, the electricity is very dangereous