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. 

Over the last decade, the retail
security market has undergone shifts in both approach and technology.

Where are the growth areas? That’s a question many electrical contractors (ECs) ask themselves.

Lutron’s Maestro Wireless technology also is geared toward both the residential and commercial markets.

While wire and electric power delivery will remain a constant, the marriage between the two is being redefined. Wireless lighting and energy control are expanding from homes to office, healthcare, institutional and industrial settings.

Commercial Controls Corp., Valencia, Calif., has about 30 employees who work out of three locations in California and one in Nevada. Fred Scripture, who continues to be the owner and president but is no longer as active in the day-to-day operations, started the company in 1993.


More on Systems

 
Figure 1: Monthly plot of active power of one phase
Examining The Fine Print
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When reviewing data from your power monitoring system, the 30,000-foot approach is a typical starting point. 


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How The ECS Fits In
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The first emergency warning systems were developed to respond to war and massive fires. As time, building standards, technology and life safety systems advanced, fiery disasters became the exception rather than the rule.

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Code Awareness Creates Work
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It makes sense that most contractors focus on the codes that relate to the system types they install. Specifically, professional systems contractors most use NFPA 70, National Electrical Code and NFPA 72, National Fire Alarm and Signaling Code.


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3,000A clamp-on CT
The Current State Of Current
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Debates within the organizations that develop the power quality standards will probably continue for years about why “power” isn’t really the subject of the standards. The majority of the standards present how to measure, monitor, characterize, categorize and set limits on voltage.

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Bringing BIM To Building Operations
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Contractors have been using rudimentary building-information modeling (BIM) tools since the 1970s to design installations before construction. Today’s BIM software tools aim beyond new builds to help users track operational efficiency.


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Know the Fundamentals
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“What is NFPA 72?” That sounds like a straightforward question, right? At least, we would like to think so. At a recent meeting, someone asked a technician this seemingly simple question. He replied correctly that NFPA 72 was the National Fire Alarm and Signaling Code.

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Generating Peace of Mind
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Who wants to be without lights, heat, air conditioning or a working refrigerator? Try asking someone who experienced days of power outage after the Oklahoma tornado or during Superstorm Sandy.


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