Frederic P. Hartwell

Frederic P.
Don't Be Neutral About Grounding 1
None of us are indifferent about grounding, but we often fail to communicate well.
Code Forum
Portable Standby Systems
Code Quandaries
NEC questions from our Web site
Code Forum
Code Basics: Range Loads On 3-Phase Systems
Quizzes on the Code
Outside branch circuits and feeders—Art. 225
Code Quandaries
NEC questions from our website
Wiring multiple buildings from one transformer.
There are practical industrial applications for wiring several buildings from one transformer, but does it meet Code?A new controversy has come up on
Quizzes on the Code
Load Calculations — Art. 220 (part 2)
Code Forum
Sharing Space Over Panels: OK If Safety Issues Addressed
Manholes: What Does The '99 NEC Have To Say?
What do you need to know about the new Part D of Art. 370, now that the '99 NEC covers manholes for the first time?
Code Quandaries
NEC Questions from Our Website
Quizzes on the Code
Load calculations—Art. 220 (part 1)
Code rules for low-voltage lighting.
A new Code article covering lighting systems operating at 30V or less will modify some and help standardize other low-voltage lighting designs. Additional
Code Quandaries
NEC questions from our website
Should You connect Transformer Ground to Building Ground?
Should You connect Transformer Ground to Building Ground? Q. What are good transformer grounding techniques? I would especially like to know about connecting
Electrical Testing Feed

EC&M Webinars
Jul 26, 2016

Data-Driven Decisions Through Smart Building Technology – How IoT Impacts Facility Professionals

The Internet is this generation’s industrial revolution. It continuously creates new opportunities and impacts our facilities across every industry. One important example is how IoT has impacted facility operations through integration and accessibility of many of the building systems. Much like the convergence of IT and Telecom into VoIP, the internet has the capability to align facilities and IT to create a Smart Facility....More
Jul 28, 2016

Next Generation Lighting- The Emergence of POE for Lighting

Historically, lighting controls have always had a singular responsibility: Manage the light. Until now....More
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