Emergency lights are modern lights that are now installed in nearly every high-rise or commercial building throughout North America; as the name would suggest, the purpose of an emergency light is to come on in the case of an emergency power failure in order to illuminate the area and help maintain high levels of safety.
Emergency lights generally consist of incandescent bulbs or highly intense clusters of light-emitting diodes (LED); the lights are normally equipped with either PAR 36 sealed beams or wedge base lamps and each unit contains a reflector in order to increase the intensity of the light the unit provides.
Maintained vs. Non-Maintained
Emergency escape lighting is classified in three ways; maintained is lighting that comes with the option to be kept on all the time but that has a switch for optional turnoff, while non-maintained is triggered only by an emergency event in which the regular lighting fails.
In most cases, these lighting systems incorporate single units called luminaires which are built to illuminate the area for one to three hours in the event of a power failure; the most popular option is the three-hour and can help with keeping up continued yet limited use in the event of a power failure.
Emergency Lighting

Maintained Lighting for commercial and residential property.

A third option for emergency escape lighting is sustained lighting, which is almost a hybrid of the two and equipped with two lamps; one can be kept on at all times while the other kicks in only during situations where emergency lighting is required.
Cost-Effective Maintained Lighting
The opportunity for real cost-effective maintained lighting lies in the use of systems equipped with LED, high-efficiency, long-lasting bulbs; with a 50 000 hour life span, these bulbs are an amazing option for use with a maintained system as the chances of them ever being used enough in an emergency situation to become burnt out is extremely low; on top of this, there is the option of using the same bulbs in a regular capacity, which essentially adds up to never having to replace your bulbs again.
When considering the price of regular 1000-hour light bulbs, which are geared only for 1-3 hour use in the event of an emergency, it becomes clear that this is the most cost-effective solution for your business.
Another interesting benefit of maintained lighting is that it's possible with this system to test bulbs in order to know whether they're working properly; this option is not available with non-maintained systems and therefore has the disadvantage of putting the business in a situation where they are liable should the lights fail in an emergency situation.
So whether you're speaking in terms of long-term liability or energy-efficiency, maintained emergency lighting is the more cost-effective solution.

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