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Robert J. Lawrie

Articles by Robert J. Lawrie
Maintaining The Bottom Line
How to boost productivity, reduce downtime, and save money: What you should know about motor maintenance programs.
Why are Generator Batteries Failing?
The answer to JK’s question on “failing generator batteries” in June 1997 needs additional information. First, you need to find out why the engine-driven
Why Do Light Bulbs Fail Early?
I read the answers to the questions about fast burnout of light bulbs in the Oct. 1997 issue. Although all of the answers are helpful, I believe I have
How Are AC Adaptors Rated?
I would like to know how AC adapters are rated, so I will not damage an electronic device. For example ...
Can I mark the ends of conductors with paint?
Q. Is it permitted to spray white paint on the end of a black, red, or blue conductor to indicate it is a grounded conductor? —M.H.M. A. Sec. 200-6 of
Calculating temporary power from multiple panels for multiple loads.
Q We recently had a problem providing temporary power to numerous pieces of 208V, single-phase equipment of various sizes. Sources of power were a number
Top testing tips for better maintenance management
A progressive, forward-thinking mindset at a recently built semiconductor manufacturing plant in the Southwest results in electrical maintenance capabilities
What causes arcing at steam fitting?
Q We recently installed a new steam pressure reducing station in an existing 6-m. 150-lb steam line. After reinsulation of the pipe with foil-jacketed,
Premium-efficiency motors: soon they'll be law.
In a little more than a year from now, most of your new motors must meet new efficiency levels mandated by federal legislation.On October 24 of next year
Guidelines for engine-generator installations.
These general guidelines will help you complete the installation of an efficient and reliable genset.Engine-generator sets now have countless applications,
Guidelines for motor installations.
A strong working knowledge of installation techniques is vital to the effective operation and maintenance of motors.Today's modern motors require your
Guidelines for engine-generator application designs.
Effective selection and application of modern gensets require a strong knowledge of generator basics as well as an in-depth awareness of fuel sources
What you should know about hazardous-area motors.
Here are key data that you need to properly select, install, and maintain hazardous-area motors.Hazardous areas motors are those motors designed with
Guidelines for motor application designs.
Effective selection, application, operation, and maintenance of modern motors require a strong working knowledge of rotating-machine basics as well as
Premium-efficiency motors slash electric costs during eight-hr operation.
Premium-efficiency motors replace old, poorly rewound standard motors, resulting in noteworthy savings while operating on a single shift.Contrary to popular

White Papers
LED Industrial Lighting: Common Myths and Facts
LEDs have unique and compelling characteristics that make them ideal for industrial lighting applications. But there are a variety of misconceptions about LEDs, how well they work, how long they last, and more. Digital Lumens developed this whitepaper to dish up the facts around LEDs and address some common misunderstandings....More
Understand Arc Flash Safety for Motor Control Centers
An arc flash is associated with the explosive release of energy caused by an electrical arc, due to either a phase-to-ground or a phase-to-phase fault. This kind of fault can result from many factors – a dropped tool, accidental contact with electrical systems, buildup of conductive dust, corrosion or improper work conditions.....More
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EC&M Learning Center
2011 Electrician Exam Preparation Book & Journeyman Simulated Exam
Printed in full color, the 2011Exam Prep book covers Theory, Code, and Calculations in great detail. Clear colorful graphics...
2011 Understanding NEC Requirement for Solar Photovoltaic Systems
Solar power is new to most in the electrical industry and this expanding and exciting industry has created many NEC...
Photovoltaics for Commerical and Utilities Power Generation
This book provides an in-depth review of the solar industry development, and present-day state of the art, emphasizing...
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Webinars
ON DEMAND: All You Ever Wanted to Know About GFCIs & AFCIs

Abstract:  In this webinar, Mike will not only explain the current NEC requirements for GFCIs and AFCIs, but he'll explain how they operate, what causes their premature failure, and when they won't provide the safety protection you might have thought they would.

 


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ON DEMAND: Workplace Electrical Safety: Prevention before Protection


Abstract: This webinar will teach attendees the difference between risk and hazard, and how the choice of system grounding has a direct impact on reliability and safety.

 

 

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EC&M TV
Apr. 15, 2013
video

Protection From Arc Flashes

Learn how arc flashes happen, how they are measured and how wearing the right flame resistant clothing can keep workers safe....More

 

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