Maintaining Your Grounding
Repetitive Causes vs. Root
NEC in the Facility
About This Newsletter
e-newsletter is brought to you from the
publisher of EC&M magazine.
MRO Insider addresses topics such
Working with management and supervision
National Electrical Code® on the production floor
Safety procedures and programs
Equipment maintenance and testing tips
Managing motors and generators
Trends in training and education
Managing energy use
To unsubscribe from this newsletter go to: Unsubscribe|
To subscribe to this newsletter, go to: Subscribe
To get this newsletter in a different format (Text or HTML),
or to change your e-mail address, please visit your profile
page to change your delivery preferences.
issue? Visit the MRO
Insider archive page on the EC&M Web site.|
Share with a Friend
Do you know
someone who'd like to receive his or her own copy of MRO Insider? Visit
the subscriber site enter their e-mail address, and spread the wealth.
To find out
how to advertise in this newsletter, e-mail David Miller or call him at
The designations "National Electrical Code" and "NEC" refer to the
National Electrical Code®, which is a registered
trademark of the National Fire Protection Association.
It's a common mistake to test something other than the
grounding system and then conclude the grounding system is good,
regardless of its actual (and unknown) condition. That mistake, in
leads to inadequate maintenance of the grounding system.
IEEE-142, the Green Book, differentiates between "static grounding"
and "lightning grounding," by which it means bonding in the former case
and earthing in the latter. Bonding, which is addressed in detail in
NEC Art. 250, Part V, isn't the concern here. Our concern is the earth
connection, because you need it for lightning protection. To understand
the maintenance requirements, it seems logical to look to the lightning
To read more on this story, visit EC&M's Web
AMAXX® by MENNEKES
One AMAXX unit
receptacle installations, saving you labor, material and space.
Offered in single gang to five-gang models, AMAXX provides configurable
flexibility for receptacles
and switches in an innovative enclosure system. With AMAXX, you can
customize quickly, safely and easily.
Call 1-800-882-8110 or visit us online www.goMENNEKES.com.
You've been assigned the task of solving a product
quality problem. The plant has six production lines, each for different
flavors of a baked good. The process on each line begins with a mixing
vat controlled by PLC. The dough drops onto a conveyor and passes
through an oven, and out the end comes the finished product.
The products sometimes are a bit gooey, sometimes a bit burnt. To
begin solving this problem, what should you do?
Web site to see the answer.
vs. Root Causes
No repair is complete without a failure analysis. One
goal of the analysis is to prevent the problem from recurring on that
equipment. Looking for repetitive causes allows you to reach this goal.
For example, a motor failed due to overheating. Analysis shows the
is a lack of ventilation. Add ventilation, and you prevent a repeat of
Another goal of failure analysis is to prevent the problem from
recurring elsewhere from the same cause. For example, a motor
fails due to voltage imbalance on the feeder. Other motors sharing that
feeder will fail from the same cause. We call this a root cause.
Stainless Steel Liquid Tight
ElecDirect’s line of Stainless Steel
Liquid-Tight Conduit Connectors are made of corrosion resistant 304
stainless steel and designed specifically for flexible liquid tight
conduit. Ideal for highly corrosive environments, these connectors are
extremely durable and UV resistant. They also include an insulated
throat for further cable protection.
Starting from only
$19.99—it’s time to stop replacing broken plastic and rusted steel
— or call toll free 800-701-0975 for more information.
It's essential to follow NFPA 70E, but doing so
you from only three of the many dangers that exist on the job:
How many other dangers exist? OSHA 1926 is more than 1 in. thick and
contains the safety regulations for the construction industry. Most of
these concerns exist in facilities as well. In addition, each facility
has its own quirks and process-related dangers.
- Arc flash
- Arc blast
To read more on this story, visit EC&M's Web
NEC in the
A problem facing facility managers in this time of
severe cost-cutting is getting approval for spending money on NEC
compliance. A misperception used as justification for "saving money"
through noncompliance is "we're not under the NEC." That misperception
arises because operating facilities generally aren't under the
jurisdiction of the local electrical inspector.
However, several Authorities Having Jurisdiction (AHJs) can enforce
- Fire marshal can order the facility closed.
- Insurer can revoke insurance, even retroactive to a catastrophic
- Courts can rule negligence, with civil or even criminal liabilities
(if death or injury is involved) against both the company and
- OSHA can order the facility closed.
- Electric utility can shut off power.
You are subscribed to this newsletter as #email#
For questions concerning delivery of this newsletter, please contact
Customer Service Department at:
Customer Service Department
A Penton Media publication
US Toll Free: 866-505-7173
Penton Media, Inc. | 1166 Avenue of the Americas, 10th Floor | New York, NY 10036
Copyright 2013, Penton Media, Inc. All rights reserved. This article is
protected by United States copyright and other intellectual property
laws and may not be reproduced, rewritten, distributed,
displayed, published or broadcast, directly or indirectly, in any
without the prior written permission of Penton Media, Inc.