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

 
A Misleading Circuit

Can a 20A receptacle be placed on a 15A circuit?


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Security for the Masses

For many people, a trip to the airport is the most potent reminder of terror in our new age of heightened security. We wait in long lines to be X-rayed and metal-detected. We see guards everywhere, often accompanied by dogs.


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Fire Protection for Public Spaces
by Staff |

Fire protection typically consists of three primary features.


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Getting Physical
by Staff |

Top-of-the-line detection is everywhere Convention centers, museums, federal buildings, airports, high rises, casinos and a host of other public venues have spent the last few years either updating and improving their physical security or starting from scratch with newly installed systems.


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Wireless LANs: The New Attention-Getter

‘Hotspots’ provide high return on investment In our connected world, seeing people frantically check their e-mail before boarding a plane has become commonplace. Instantaneous communications are par for the course, which is why public wireless LANs have come into their own.


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Using System Smarts to Your Advantage

End-users can monitor events and plan responses Standard “tools” in current security and low-voltage equipment and peripherals allow installing contractors to more accurately pinpoint events so the end-user can plan an appropriate response.


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Choosing Testing Equipment

Price and preference play a part The feeling of satisfaction you get when a project is complete, is accompanied by one of accomplishment, whether it’s your first installation or your thousandth.


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