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Monthly Archives: November 2003

Neon Secondary Circuits Over 1000

Neon lighting requires ignition of gas in processed tubing with higher voltages. Voltages in the required ranges are developed by transformation from a primary...

Three Chiefs Come Full Circle on Parallel Paths and End on a Tangent

NEC AND FIELD PROBLEM Prior to the 1999 edition of the National Electrical Code, Section 250-24(a), Two or More Buildings or Structures Supplied from a...

Arc-fault Circuit Interrupters – A Critical NEC 2005 Issue

During 2003, many AFCI articles and comments have appeared in IAEI News. This publication activity is associated with the actions taken by code-making panel...

Staying Ahead of the Curve

These are challenging times for the electrical inspection community, safety organizations such as Underwriters Laboratories, the Consumer Product Safety Commission, and electrical device manufacturers....

Grounding of Alternate Power

When engine generator sets are used as an alternate source of power (i.e., emergency or standby power), it is essential that they be properly...

Delayed Accident Investigations

About twenty times each year, I am consulted on accidents involving our electric power delivery system. Most of them are accidents involving property damage....

Reduced Size Taps Rule 14-100, Reduced Wiring Ampacities

This article will discuss Rule 14-100, which specifies the minimum requirements for reductions in wire sizes. Splitter box connections are among the most common...

What UL Standard is used to evaluate portable power distribution units used at construction...

Question: Portable power distribution unit What UL Standard is used to evaluate portable power distribution units used at construction sites? How can I identify these...

IO President’s Farewell Address

Dear IAEI Members, Associates and Friends, For those of you that were not able to attend the 75th Diamond IAEI Jubilee meeting in Orlando, Florida,...

Navigating the Ground Rod Electrode Maze

There is a lot of confusion on the use and application of galvanized ground rods due largely to the fact that there has not...
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