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 storm on the horizon and another image of electric utility trucks heading off to help with recovery efforts. That seemed to be an almost-nightly occurrence in late August through mid-September, as hurricanes Harvey and Irma made their way to the U.S. mainland.

In Austin, Texas, monk parakeets nest in power transformers on poles high above street level. The nests become so large they can cause fires and power outages.

Residential and commercial security products are becoming easier to integrate. Big box stores and electronics retailers sell security systems that enable users to check on their home or business from anywhere, with advanced features such as night vision, phone alerts and more.


When a customer complained about the lights flickering in the past, it was difficult to get a quantitative measure of the problem. The parameter, Pst (perceptibility short term), specified in IEC Std 61000-4-15 and eventually IEEE Std 1453-2004, now provides such a quantitative approach.

More on Systems

 
Ferndale Electric Takes the Holistic Approach

In the heart of Detroit, surrounded by erosion and boarded-up businesses, a major construction project is nearing completion.


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Access Denied

Access control is nothing new. Locks on doors and windows are a rudimentary form of shutting people out. While not the most effective means of control, plenty of facilities use it as their only means of security. ID cards are nothing new either.


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High-Rise Fire Alarm Systems

Delayed notification is a major factor of fire-related deaths in the United States. In most cases, the building occupants did not hear the audible alarms in the building or failed to understand the voice message instructions proved by the fire alarm voice communication system.


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Innovative Fire Alarm Systems

Whether mandated by new codes or facilitated by a keen interest in life safety as a result of recent news events, fire alarms continue to rise to the occasion with intelligence and advanced capabilities.


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Fiber Optic Splices

There are two different ways to join two optical fibers: splices or connectors. Splices are permanent joints, while connectors allow the two fibers to be disconnected at the joint.


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Grounding Continuity, Church Wiring and More

Grounding-electrode continuity Q: Does the grounding-electrode conductor to driven ground rods have to be unbroken to both rods or may a splice be made at the first rod, then continue to the second ground rod by installing two ground clamps at the first ground rod, then continuing to the second rod


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Take the Layered Approach to Wireless
by Staff |

Some predict a totally wireless world, but that will probably never happen. There are so many other good media out there-including fiber optics, unshielded twisted pair, coaxial and other bundled wiring solutions-chances are there will always be room for both hardwired and wireless.


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