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

 
What Business Are You Really In?

The title of this article is not meant to make you smile. 
Most Electrical Contractor readers work in the contracting business. But, on a daily basis, personnel and clients likely bombard you with requests to take on a new challenge and to do a better job at the work already being performed.



READ MORE
 
More To Come: A Sneak Peek at the 2019 NFPA 72, Part 2


In October, I listed some of the significant changes proposed for the 2019 edition of the NFPA 72, National Fire Alarm and Signaling Code. This month, I cover more of the important proposed changes. Keep in mind that this is based on the public input stage.


READ MORE
 
Fluke’s laser distance meter
Cool Tools: Measuring Tools

Measuring tapes are a basic and necessary tool. When the dimension to be measured is inaccessible, handheld, laser 
distance-measuring tools may be the only safe and practical solution. 
 There are many options today for taking measurements on structured-wiring projects.
 Laser measuring tools



READ MORE
 
A True Turnkey Integrator

Ferndale Electric Co., Ferndale, Mich., which employs an average of 130 electricians, performs electrical work for automotive plants, power plants, bottling plants and other industrial facilities. It also renovates electrical systems for lift bridges and completes major projects for airports.



READ MORE
 
Open to Interpretation: The Accuracy of Optical Loss Measurement Data


Last month, I discussed making loss measurements with a light source and power meter—what we call optical insertion loss—and the causes of errors in those measurements.


READ MORE
 
So Many Choices: Deciding Which PQ Instrument Is Right


One challenge with going to one of America’s iconic eating establishments—the diner—is that the menu has so many choices that decisions can change a dozen times before the server takes the order.


READ MORE
 
Power Solutions

At the MIT Energy Conference in March 2016, U.S.


READ MORE

Pages

X