Integrated electrical and low-voltage systems of all types—inside and outside a building—encompass the range of work that electrical contractors do. The articles in this section highlight different types of work, from security, fire and life safety, to traditional electrical power and distribution, to lighting, cabling and more.
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Comments
 The fire alarm systems industry has changed considerably over the years. Many old-timers can remember a fire alarm system that only detected a fire and sounded an alarm. Nonfire alarm systems did not interface with these fire alarm systems. |
 The history of classes and styles of circuits is interesting. Back in 1987, a proposal was accepted to start using Styles of Circuits instead of the Class A and B we were all used to. Well, at least some thought so. |
 As bandwidth demands continue to rise, both copper and fiber cable manufacturers are developing products that offer greater capacity and flexibility. |
 H&S Electric Inc., Valencia, Calif., has been in business since 1990. Its services include construction, commissioning, consulting, energy analysis, engineering safety, green building/sustainability, maintenance and operations, systems management, systems design, and technology evaluation. |
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