Posted by George Marsh on November 06, 2014 at 15:23:22 from (192.182.49.176):
For decades I've wondered why a GFCI will trip if you touch ground to neutral. Both ground and neutral are bonded together to the same point in the load center. GFCI trips when it detects a difference in current between power and neutral. Then today while talking to myself, because no one was around and I wanted to listen to someone talk, Self had an AHA moment. Even though there isn't anything plugged into the GFCI, the GFCI is using power. So, there is current in the neutral and power wire. Shorting the ground to neutral allows some of the neutral current to find it's way back on the ground wire.
To confirm all this I put a short 3 wire cord on a GFCI. Then plugged it into a device that measures watts. Sure enough, 2.6 watts. Not sure of the accuracy of my meter, so you may try the experiment and find something different.
Better not tell tree huggers that GFCIs are using that much power. A billion GFCI's will consume 2.6 billions watts. Is it possible that all this wasted power is causing GOBAL WARMING? George
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.