Motors and Drives

Courtesy: Johnston, LLC
Motors, Drives February 1, 2021

Consulting-Specifying Engineer most-viewed articles, January 2021

Read the best articles in January 2021 including: Choosing between an ECM and VFD, NFPA 70-2020 changes, NEC chances and more.

By Chris Vavra
Courtesy: CDM Smith
Building Types January 29, 2021

Top 5 Consulting-Specifying Engineer articles: January 22-28, 2021

Read the best articles from the past week. Smart buildings, NEC changes, designing and retrofitting hospitals, choosing between an ECM and VFD and NEC changes

By Chris Vavra
Courtesy: AABC/Engineered Air Balance Co., Inc.
Building Types January 22, 2021

Recommendations for periodic testing, adjusting and balancing of existing buildings

Existing, occupied buildings can benefit greatly from the TAB process as well by improving its performance and efficiency.

By Gaylon Richardson
Courtesy: Yaskawa America Inc.
Motors, Drives January 7, 2021

How to choose between an ECM and a VFD

While each has its place in HVAC applications, electronically commutated motors and variable frequency drives have important differences in simplicity, flexibility, cost and other factors

By Larry Gardner
Courtesy: WSP USA
Fire, Life Safety November 19, 2020

Understanding fire pumps, their applications and sizing

Learn about fire pump types, drivers, sizing and components

By Vincent T. Favale
Courtesy: CDM Smith
Electrical September 24, 2020

Why is ground fault protection needed?

Electrical system ground fault protection is vital to ensure the safety of personnel and equipment and to reliably maintain systems based on the loads they serve

By Will McGugan and Lilly Vang
Courtesy: Metro CD Engineering
Electrical September 23, 2020

Case study: Calculating motor OCPD

Learn how to determine the combined overcurrent protection device for a motor

By Michael Chow, PE, CxA, LEED AP BD+C
Courtesy: Metro CD Engineering
Electrical September 23, 2020

Fundamentals of motor circuit protection

Motor circuit protection involves understanding the National Electrical Code and equipment nameplate information

By Michael Chow, PE, CxA, LEED AP BD+C
Sustainability September 9, 2020

How microgrids are a sustainable solution for extreme weather environments

Microgrids help make customers more resilient before, during, and after the wildfire season and can help optimize assets and reduce power interruptions.

By Roxanne Fong
Courtesy: Johnston, LLC
Electrical, Power July 29, 2020

Back to basics: Switchgear, transformers and UPSs

Switchgear, transformers and uninterruptible power supplies are among the largest, costliest and most critical devices in a facility

By Tom Divine, PE, LEED AP