Posted by Fromjb2 on September 17, 2007 at 13:00:28 from (74.111.119.222):
In Reply to: Electrical Grounding posted by John T on September 17, 2007 at 08:17:17:
Hi John T, excellent article. Many years ago, I worked in a computer facility where a new isolation transformer had been installed and the Electrician was connecting up the new power feeds to the mainframe. The Electrician had all the breakers in the main panel turned off and he was connecting the wire ends in the main breaker box of the mainframe when all of a sudden there was a flash like an arc welder from where the Electrician was working. Every one rushed over to see if he was OK, he just held up his hand with a screwdriver with part of the tip and a V notch in the shaft that had been burned away. He had connected the ground lug to the case of the breaker panel and was in the process of connecting the neutral when his screw driver slipped and made contact between the neutral and grounded case. Electrician was really puzzled, he took out his VOM meter and measured between neutral and ground and there was 10VAC. After further investigation it was determined the contractor that installed the isolation transformer had never connected the neutral to the building ground point (city water pipe). Moral of the story, always check the neutral to ground voltage with a VOM meter because serious damage or injury can occur because there are no circuit breakers on the neutral wire.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
... [Read Article]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
