5 Mistakes people make updating their
THINKING about improving your lighting? Do nothing until you've seen the 10 mistakes most people make with the new LED lighting.
1 Buy lights with a different light distribution
Probably the most common problem with an update. LED lamps and lighting accessories tend to have a more directional output. So, for example, if you replace halogen downlights with LEDs, you'll get much less spill light. This spill light is really helpful, as for lighting walls in the hallway of a hotel. Similarly, if you exchange fluorescent with LED, you can end up on the top third of the walls in the shade.
The best way to avoid: buy a sample first.
2 Buy lights that are too dark or too bright.
If you are thinking of performing a fluorescent-like replacement with LED accessories, do not match the fluorescent light output (measured in lumens or lm). As the LED light is directional, you are likely to receive much more light from the LED. Note, however, that light output can be overestimated in the datasheet and a different light distribution can make a room look dark.
The best way to avoid it: buy from an accredited brand, check a sample against the existing luminaire or do a test in a laboratory.
3 Buy lights that are too "cold"
The cold or warm appearance of the lights is measured in Kelvin. The incandescent lamps are 2700K while the halogen ones are 3200K. If you replace these with LEDs that are 5000K, your spaces will look clearly cold. LED panels that come from Asia tend to be great, because that's their cultural preference and it's easier to make an LED light more efficient in cool color temperatures.
The best way to avoid: Check the specifications and buy a sample.
4 Buy lights that make colors look boring
The ability of a light to represent colors is measured in the color rendering index or CRI. As a general rule, you want lights with a CRI of 80, or better yet, 90. A particular area of weakness with LED lights is the R9 (red) value, as this is not included in the CRI measurement. Make sure there are also more than 80 or else the redons will be muddy and turned off.
The best way to avoid this: ask the provider about your CRI values. If they're not going to supply, be suspicious.
5 Buy lights that are incompatible with your dimmer.
LED lights do not always dim smoothly in attenuators designed for incandescent or halogen lamps. In fact, at low levels they will often blink and flash. This is because incandescent and halogen sources have a standard resistive load for the attenuator, while LED circuits confuse it and sometimes both sets of electronic components struggle for the domain, leading to the failure of the Components.
The best way to avoid this: you should test the attenuators with the LEDs or add a "dummy load", such as an incandescent lamp.