Posted by k6zrx on June 03, 2014 at 20:47:11 from (64.175.37.190):
There has been much discussion of properly making connections to electric sub panels in places like barns and workshops. I have two very similar electrical situations, one in my workshop and one at our two way radio site. Both installations are from the 1950"s and feature no grounding conductor to the remote loads, only the grounded neutral and a hot. The line to the workshop is about 60 feet direct burial, through a landscaped area, and the one at the radio site is about 150 yards on poles with bare Copperweld wire.
The goal is safety and radio frequency noise suppression. The VFD on my lathe causes all sorts or RF noise since the case is not grounded. At the radio site, the tower and all incoming cables are grounded by several ground rods for noise an lightning protection, thus all cabinets are grounded through the antenna cables, but the neutral is not at this ground potential.
Thinking about the commercial radio sites I have worked at with a generator and service drop on a separate building, there gets to be an interconnection between the lightning/RF ground and safety ground. This is through the antenna cables going to the equipment and through the grounded plugs to the AC outlet or metal conduit to power supplies. This is probably not the best thing, but is shows a common situation where two separate ground systems end up tied together.
Is there anything short of adding a ground wire from the main panel to the remote loads? I am interested in all answers... Practical, theoretical, and code related.
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 - Farmall 460: That's My Girl - by LeAnn R. Ralph. How many sounds can you think of that are as familiar to you as your own breathing? What about the hum of your refrigerator? Or the thump of your clothes dryer? Maybe the engine of your car? You hear those sounds every day, and you don't think much about them, do you. I can think of a few common, ordinary sounds in my daily life, too.
... [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.
