Articles
UL Announces the Expansion of RTP Lighting Center
October 29, 2007
Exit Signs — Evolving Products, Evolving Standards
The original “EXIT” sign was probably black paint on a white wall. Such painted signs and placards are still in use today, but their effectiveness is dependent on external light sources. To comply with model code requirements stating that exit signs be continuously illuminated while the building is occupied, most facilities choose internally illuminated exit signs.
Categories of Emergency Power and Lighting Equipment
National Electrical Code© (NEC) Article 700 identifies the equipment associated with a facility’s emergency systems. These systems can be broken down into three groups: power sources, distribution equipment and utilization equipment.
Focus on Emergency Lighting Equipment
LCRs can play an important role in helping a facility meet the life safety and code compliance goals associated with emergency lighting as well as the economic and environmental goals of increased energy efficiency.
Lamps in the Damp
Article 410 in the National Electrical Code (NEC) covers the installation of the wiring and the equipment forming the parts of lamps, luminaires (fixtures) and lampholders. There are both general requirements for luminaire installations as well as specific requirements found in this article and it covers a variety of luminaires. Surface-mounted and recessed incandescent, fluorescent and high-intensity discharge (HID) luminaires are covered, as are track lights.
Low-voltage Lighting—Listed Systems or Individual Field-assembled Components?
Does the National Electrical Code (NEC) require all lighting installations operating at 30 volts or less to be Listed systems? Can individual low-voltage lighting components, such as a power supply, fixtures, and conductors be assembled in the field without being part of a Listed system?
Understanding Luminaires and Lamps
A luminaire is defined in Article 100 as “a complete lighting unit consisting of a lamp or lamps together with the parts designed to distribute the light, to position and protect the lamps and ballast (where applicable), and to connect the lamps to the power supply.”
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