Posted by westom on August 29, 2012 at 07:01:48 from (72.94.245.184):
In Reply to: Re: Strike protector? posted by George Marsh on August 28, 2012 at 13:19:07:
Understand that the protector never does protection. A protector connected low impedance (ie 'less than 10 feet') to earth means earth absorbs surge energy. If that protector does not have a short earthing connection. then a protector is described as 'useless'.
Every wire inside every incoming cable must connect that short to earth. If not, then all protection is compromised. Does the TV cable also makes a low impedance (ie 'less than 10 foot') connection to the same earth ground? If not, protection is compromised.
A protector protects household appliances. It works only because it is earthed. A lightning rod protects the building. It works only because it is earthed. Lightning strikes interior wires because a building also has been damaged - no lightning rod. In every case, lightning finds the best path to earth. Harmlessly outside (via a 'whole house' protector or lightning rod). Or destructively inside (via appliances or walls).
Protection is always about how that current gets to earth. Protection is always about the only item that harmlessly absorbs that energy - earth. Critically important is the single point earth ground.
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 - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
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.
