John, you ask " If I look at the breakers or sub panel I see things like "rated for 120/240 VAC and 10,000 AIR" But I do not know what 10,000 AIR means
At our facility I had occasion to deal with that issue. Breakers are rated according to the maximum level of current they can interrupt and that's referred to as the interrupting rating or Ampere Interrupting Rating (AIR).
In order to determine just what AIR we required, we had to perform a complicated set of calculations to determine the absolute maximum short circuit current that could be supplied from whatever substation that supplied service to the building. Even at the first building closest to a sub station we found the max short circuit current was way under 8,000 amps. THEREFORE the standard AIC rating of 10,000 amperes breakers were just fine. If you are located close to a sub station with big enough wire of low enough impedance there could be more then 10,000 amps of short circuit current available and you would need a higher AIC breaker, but at our huge military industrial complex NOWHERE did our short circuit current capacity exceed 10,000 amps.
Without going into all the exact details, Id rather err on the side of safety and allow room for future expansion then to design a marginal distribution system BUT HEY ITS YOUR MONEY AND DECISION NOT OURS TO MAKE
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[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.
