2006

Tricky Rules

The 2007 NESC – Part 3

Article 675 – Electrical Driven or Controlled Irrigation Machines

VFDs for Energy Savings in Hospitals – what they are, how they work, and how they save money

What are the new listing requirements for GFCIs and when will they go into effect?

Emergency Lighting and Exit Signs Application and Installation Requirements

Analysis of Changes, Part 1, NEC-2008

What happens if I use the factory provided holes in the bus?

The 15-minute PV System Inspection. Can You? Should You?

What Is Practical Safeguarding? A Look at the Evolution of GFCI Protection

In this article, I would like to review the history of the NEC requirements for the use of GFCI protective devices and to consider the possibilities for future evolution.