Eddie Guidry

Senior Fellow,
Fluor Enterprises, Inc.

Eddie Guidry is a senior fellow with Fluor Enterprises, Inc., Sugar Land, Texas. He is highly skilled in electrical and control systems for industrial construction, design, and engineering (both domestic and abroad). The majority of Eddie’s 38 years of experience includes upstream and downstream portions of petrochemical plants and refineries. He is also heavily experienced in water and wastewater treatment facilities. Eddie is very active in the development of U.S. national (ANSI) and international codes and standards, and has been a principal member of the National Fire Protection Association (NFPA) National Electrical Code (NEC) committee since 1999 and NFPA’s National Advisory Committee on Electrical Safety Research since 2008. Eddie, who has also developed and conducted many electrical courses and seminars over the years, currently holds the corporate Master Electrician license for Fluor Corporation in the State of Texas and is also an ICC/IAEI certified electrical inspector.

Motor Nameplate Current vs. NEC Full Load Current Values
When sizing circuit breakers, fuses, and conductors for a general AC motor branch circuit, National Electrical Code (NEC) Sec. 430.6(A)(1) stipulates that the currents indicated in the current tables at the end of Art. 430 must be used to determine the ratings instead of the actual nameplate current rating.
Industrial Building and Structure Disconnecting Means 
The typical petrochemical plant has a distribution voltage of 15kV to 35kV (medium voltage).
Voltage Levels and the National Electrical Code  5
Ask control systems engineers what the term “high voltage” means to them, and you’re liable to get an answer such as “anything over 50V”.
Is it an Emergency System or Just an Optional Standby System? 4
Many unit substations and instrumentation rooms in industrial process facilities use a combination of an uninterruptable power supply (UPS) and generator(s) to bring the process unit down in a controlled manner upon power interruptions.
Arc (Incident) Energy Reduction
The National Electrical Code (NEC) tells us that all switchgear, motor control centers, industrial control panels, etc. that are likely to require examination, adjustments, servicing or maintenance while energized must be marked in the field or factory with the appropriate information to warn qualified persons of potential electric arc flash hazards [Sec. 110.16(A)].
Installing Equipment Grounding Conductors in Paralleled Multiconductor Circuits
We’ve struggled for many years to comply with the requirements in Sec. 250.122(F) of the National Electrical Code (NEC) when routing multiconductor cables with equipment grounding conductors (EGCs) in parallel in cable tray.
Low-Voltage Motors, Voltage Drop, and the NEC 10
Inevitably, industrial facilities are going to have 460VAC, 3-phase motor loads.
This is what a typical field evaluated label looks like.
What is a Field Evaluation Body, and What Do They Do?
A couple of new definitions have been added to the 2017 Edition of the National Electrical Code (NEC).
Transformer Secondary Conductor Protection for Systems Operating at Greater Than 1,000V 2
Transformer secondary conductor protection for voltage levels less than 1,000V is adequately covered in Art. 240 of the National Electrical Code (NEC) – more specifically, Sec. 240.21(C)(4).
Choosing the Right Cable Insulation for Medium-Voltage Installations  5
As compared to small commercial and residential projects, choosing the appropriate power cable insulation for large industrial installations can be a bit more complex, especially for medium-voltage (MV) applications. For the purposes of this article, MV is defined as 2,001V through 35,000V.
Mixing Cables Over and Under 600V in Cable Tray 
At times it becomes necessary, or even desirable, to route medium- or high-voltage cables (greater than 600V) in the same cable tray with cables rated 600V or less.
Industrial Electric Heat-Tracing Basics
Petrochemical plants have many thousands of feet of electric heat tracing.
Conductor Sizes Directly Related to Terminal Temperature Ratings 16
Although the requirements for limiting the ampacities of conductors to that of the terminal temperature ratings found in NEC Table 310.15(B)(16) has been clear in Sec. 110.14(C)(1) for many years (since the reference to the specific table was added several Code cycles back), confusion still exists on what this Section means and how it affects conductor sizes. Let’s try and clear the air a bit by reviewing a couple of real-world examples of how to apply these Code requirements.
The Basics of Cable Pulling 
Every electrical installation requires the pulling of cable.
Is it a Service or a Separately Derived System? 6
Unlike residential and commercial installations, sometimes it’s difficult to determine the difference between a “service” and a “separately derived system” in an industrial setting.
Electrical Testing Feed
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