Systems

 

 

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. 

Reviewing data files from power quality (PQ) monitors to find evidence pointing to the cause of a customer’s problems may sound simple enough for someone who has worked in the industry for more than 35 years.

Many contractors work on building tenant fit-outs or reconfigurations of existing spaces where an existing fire alarm system requires updating. Often, a fire alarm equipment salesperson will lure the contractor into thinking it is OK to reuse the existing system’s wiring and cable.

Shopping for products today involves a world of possibilities. There are online resources and distributors with brick-and-mortar stores and mobile apps to speed up the process. Price is fairly standard, barring volume or project discounts.


An arc fault circuit interrupter (AFCI) is an advanced circuit breaker that, as a way to reduce electrical fire threats, breaks the circuit when it detects a dangerous electric arc in the circuit that it protects.

More on Systems

 
Problems of Aging Fiber Optic Networks

Is it time to fine-tune older fiber? Some fiber optic networks have now been in use for more than 20 years, a tribute to the inherent capabilities of optical fiber.


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On Auctions, RFID and '4D'

The construction industry won a major battle in late July, when the U.S. Army Corps of Engineers (ACE) issued its verdict on reverse auctions. As hoped, the Corps sees no advantages to the idea.


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Wind Generation - Trends and Issues

In 1993, government researchers concluded that a group of 12 states in the midsection of the country have enough wind energy resources to generate nearly four times the amount of electricity consumed nationwide in 1990.


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Backups for Blackouts

Last year's blackout sparked a sharp rise in consumer interest in ensuring constant uptime, which has provided more and more opportunities for the electrical contractor. With this increased demand comes the consumer's desire for more cost-effective power.


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SuperBAS Will Rule Buildings

Brainy Building Automation Systems are Coming Isaac Newton didn’t need an apple to fall on him to come up with his first law of motion: Unless acted on by an outside force, a body in motion tends to stay in motion.


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A Colorful History

NEC’s conditional requirements have evolved There are several conditions under which the National Electrical Code requires or permits conductors to be identified by the color of their insulation.


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Getting Friendly with C-STAR

Manufacturers, NECA, and IBEW work on certification Since C-STAR is set to make its debut soon, it is time to take another look at the comprehensive certification for low-voltage systems installers.


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