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Grounding and Bonding of Separately Derived SystemsMar 1, 2008 12:00 PM, Mike Holt, NEC Consultant Separately derived systems (SDSs) include most transformers as well as any generator or UPS supplying a transfer switch that opens the neutral conductor.... |
The Pros and Cons of IG Wiring
Nov 1, 2007, Edited by John DeDad, senior director, editorial and EC&M development
Confusion continues to surround the use, performance, and NEC requirements of isolated ground (IG) wiring. Can it be used anywhere, or is it restricted...
Observations on Supplemental Grounding and Bonding: Part 3
Sep 1, 2007, By William Bush, Panduit
In Part 2 of this article (August 2007), we described multipoint (or common-type) supplemental grounding and bonding between the T(M)GB [notation used...
Observations on Supplemental Grounding and Bonding: Part 2
Aug 1, 2007, By William Bush, Panduit
In Part 1 of this article (July 2007), we described (per the Emerald Book and ANSI J-STD-07-A) supplemental grounding and bonding from the grounding electrode...
Observations on Supplemental Grounding and Bonding Systems: Part 1
Jul 1, 2007, By William Bush, Panduit
Site power and grounding audits/evaluations of commercial and industrial locations routinely identify electrical power system grounding and bonding problems....
From the Ground Up
Apr 1, 2007, By Tony Locker, P.E., I-Gard
Although it's one of the most important aspects of electrical design and installation, grounding continues to be one of the least understood and most...
Electrical Equipment Issues for Parked Aircraft
Apr 1, 2007, By Mike McClelland, General Dynamics Information Technology
Replacing many older aircraft ground servicing electrical systems, solid-state frequency inverters (SSFI) are primarily being used these days as a cost-savings...
Ground Testing Techniques
Nov 1, 2006, By Jeff Jowett, Megger
Prior to about 15 years ago, the basic methodology for ground testing remained fundamentally unchanged since it was originally devised in the early 20th...
The Shocking Truth About Grounding Electrode Conductors
Nov 1, 2006, By Edward J. Osoliniec, P.E., Engineering Consultant
Have you done any service work lately, and noticed a spark as you connect or reconnect the grounding electrode conductor to the ground rod of what appeared...
Grounding and Bonding of Separately Derived AC Systems
Oct 11, 2006, By Mike Holt
Grounding & Bonding Requirements
Sep 8, 2006, By Mike Holt
Grounding & Bonding Definitions
Aug 28, 2006, By Mike Holt
Grounding vs Bonding — Part 12 of 12
Dec 1, 2005, By Mike Holt, NEC Consultant
All Code references are based on the 2005 NEC. The grounding and bonding requirements in this column apply to solidly grounded systems that operate at...
Grounding vs Bonding — Part 11 of 12
Nov 1, 2005, By Mike Holt, NEC Consultant
All Code references are based on the 2005 NEC. The grounding and bonding requirements in this column apply to solidly grounded systems that operate at...
Finding and Fixing Ground Loops in AV Systems
Oct 1, 2005, By Bill Whitlock, Jensen Transformers, Inc.
The ultimate goal of sound and image reproduction is realism the kind that creates suspension of disbelief in the listener or viewer. And nothing breaks...
Grounding vs Bonding — Part 10 of 12
Oct 1, 2005, By Mike Holt, NEC Consultant
All Code references are based on the 2005 NEC. The grounding and bonding requirements in this column apply to solidly grounded systems that operate at...
