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. 

Another year has passed, and we have nothing revolutionary to report about fiber optic technology—no instant-on connectors, dirt-cheap lasers or simple solutions to installation problems.

When a potential client calls on you to provide a fire alarm system, do you assume the design responsibility? If so, what resources do you use?


Never before in the electronic security industry has change been so profound. As hardware and boxes moved onto the network, they have morphed into intelligent, connected products.

Contractors that are still putting estimates together using pencil and paper are not only wasting time and money, but they also are losing business. Contractors who think they can’t afford estimating software are just plain wrong.

More on Systems

 
Choosing the Right Fiber Optic Cable
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Choosing the right fiber optic cable is extremely important for any installation. The purpose of the cable is to protect the fibers during installation and the service lifetime. Several types of cable are available.

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Equipment Warning Signs, Remote Service Disconnecting Means and More
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CODE CITATIONS Article 110 Requirements for Electrical Installations Article 230 Services Article 240 Overcurrent Protection Article 310 Conductors for General Wiring Article 430 Motors, Motor Circuits, and Controllers Article 450 Transformers and Transformer Vaults Article 695 Fire Pumps Warning si

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Bonding Water Piping
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There is a quiet revolution occurring in the home-building industry. Traditional single- and multiple-dwelling construction methods as we knew them have changed forever. Metal studs are now often being installed in place of wood and steel beams in place of wooden trusses and joists.

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Analog to Digital Expands CCTV
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Digital video makes surveillance a snap. At your fingertips are control functions (pan-tilt-zoom, recording, etc.) and limitless remote monitoring options.

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What Vendors Offer in E-Commerce
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This is the second of three columns dealing with industry distributors and what they are doing on e-commerce.

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Understanding Wavelength
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Fiber optics is full of jargon but it’s important to understand it. One of the more confusing terms to many is “wavelength.” It sounds very scientific, but it is simply the term used to define what we think of as the color of light.

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Branch Circuits, Grounding, Luminaires and More
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Article 210 Branch Circuits Article 220 Branch-Circuit, Feeder, and Service Calculations Article 230 Services Article 250 Grounding Article 404 Switches Article 410 Luminaires (Lighting Fixtures) Lampholders, and Lamps Article 445 Generators Article 702 Optional Standby Systems Volume I of the Fire

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