In our plant I saw a dead shot on a 125 amp 208v circuit trip the 1200 amp 480v 3 breakers up line through a transformer not supposed to happen. Thank You again for your videos
On the matter of available fault current and overcurrent devices being able to safely clear AFC, are there not similar requirements for disconnecting devices should one be manually opened during a peak AFC event?
Hi Ryan thanks for sharing. I’m not sure but the terminology are kind of confused here. I would say “present” fault current is the fault current at a particular point on a electrical system when there is a fault and “available” fault current is the withstanding of the electrical system at that particular point when fault happen.
The ability of a circuit breaker or fuse to withstand fault current is called the "interrupting rating," for all other equipment it is called the "short-circuit current rating."
Brian great that you are skilled in English but Ryan does an outstanding job. I always struggled with English but was great at math & my electrical training. While working as a second shift sparky at a large company the non electrical trained supervisor would correct my mistakes on notes that I had to leave every night. Got tired of this so I purchased a dictionary and wrote my first note without any of his corrections. Told him that glad he was happy with it because it cost him a hour of overtime. Told him that I'm Tom the electrician not Tom the magician or Tom the English major. He never bothered my notes after that. A few years later he told me he was glad to have a guy who is never late and a fast troubleshooter even if I could not spell or punctuate for a hill of beans.
@@garbo8962 Brian and I are friends. He was being helpful, not condescending. He wouldn't correct me if I didn't want it. As an author, this feedback is really quite valuable I do appreciate your sentiments too, however. I know that you said that in my defense, and I am fortunate to have people like yourself in my corner. Thanks!
In our plant I saw a dead shot on a 125 amp 208v circuit trip the 1200 amp 480v 3 breakers up line through a transformer not supposed to happen.
Thank You again for your videos
I did not find that calculating Available fault current video
On the matter of available fault current and overcurrent devices being able to safely clear AFC, are there not similar requirements for disconnecting devices should one be manually opened during a peak AFC event?
Most things (like a disconnect) need a short-circuit current rating. See 110.10
Hi Ryan thanks for sharing. I’m not sure but the terminology are kind of confused here. I would say “present” fault current is the fault current at a particular point on a electrical system when there is a fault and “available” fault current is the withstanding of the electrical system at that particular point when fault happen.
The ability of a circuit breaker or fuse to withstand fault current is called the "interrupting rating," for all other equipment it is called the "short-circuit current rating."
Thanks Ryan...🤓⚡👍
Isn't "available fault current" a new definition for 2020 NEC cycle...???
Yes it is.
@@RyanJacksonElectrical I can’t find that definition
Nice I'll check the video out later!
🍺🍺🍺🥃🥃🍇🏌🏻♀️
Stay safe.
Retired (werk'n) keyboard super tech. Wear your safety glasses.
A “short circuit” as a noun shouldn’t be hyphenated; “short-circuit” as an adjective would be.
Thanks Brian!
Brian great that you are skilled in English but Ryan does an outstanding job. I always struggled with English but was great at math & my electrical training. While working as a second shift sparky at a large company the non electrical trained supervisor would correct my mistakes on notes that I had to leave every night. Got tired of this so I purchased a dictionary and wrote my first note without any of his corrections. Told him that glad he was happy with it because it cost him a hour of overtime. Told him that I'm Tom the electrician not Tom the magician or Tom the English major. He never bothered my notes after that. A few years later he told me he was glad to have a guy who is never late and a fast troubleshooter even if I could not spell or punctuate for a hill of beans.
@@garbo8962 Brian and I are friends. He was being helpful, not condescending. He wouldn't correct me if I didn't want it. As an author, this feedback is really quite valuable I do appreciate your sentiments too, however. I know that you said that in my defense, and I am fortunate to have people like yourself in my corner. Thanks!