Thanks Ryan. I try to keep up with everything that I can and you do a fine job with keeping us up-to-date on what's going on I appreciate everything you do
Sounds like the manufactures need to change the door hinge design to allow the door to open 180 degrees. Or provide an available hinge retro kit. Still would be super tough to get every manufacturer of every different panel, gear, or cabinet in any given electrical room to be on the same page anytime soon...
Hey Ryan, you’ve always had great content so thank you! I had gotten Mike Holts 2011 library and watched you on the panel for many hours. Just ran across your channel tonight and subscribed. Thanks!
PAD WORKING SPACE: My interpretation is that a xfmr doesn't need servicing. But anything with a fuse, etc does. Transformers should last their entire service life without needing servicing. IF you want to adjust the taps for some new equipment it feeds, that can be done - you're not standing in front of it, you're kneeling. DOORS: If the door swing closed in the direction of egress travel, that's better. If it is fixed at open 90 degrees, not good. IBC 1010.1..2.1. But IBC 1003.6 says the width of egress path can't be narrowed, which leads to the 4" max. protruding object rule. IBC Tbl 1020.2 has a min. width of egress corridor at 24" for mechanical rooms, but this is an escape! Still, the occupant load in an electrical room is very low. The NEC should address design of escape with direction of door swing and latchable or not at 90 degrees. Manufacturing requirements should change to have doors open past 90 degrees and be approved to remove door latches fixing the at 90. If the door can be fixed at 90, then a 32" path width, if hinged to freely swing and not latch, then a 24" path is ok. SHIPPING CONTAINERS: Just need a fire saw, a good welder, and some steel.
Depends on your definition of "servicing". I'd agree, there's not much to mess with w.r.t. to transformers. HOWEVER, there are certainly some maintenance tasks one should perform from time to time. (i.e. inspection) One word: c-r-i-t-t-e-r-s No matter where you put it, critters are going to find it -- be it roaches, ants, spiders, scorpions (if you have 'em), mice/rats, lizards, snakes, birds, f'ing squirrels... In one of his pictures, the transformer is on a pad sitting in the great outdoors. Also, don't bank on fuses/breakers totally protecting them -- I've seen prolonged imbalances slowly cook 'em. (PSA: Fire ants _love_ electricity.)
GA Mr. Jackson. I'd like you to comment specifically about 110.26(C)(1) and the meaning of the word "entrance," which BTW most of the people assume it means "door"( Even Mike Holt!!) It is quite a challenge to argue what I understand the wording of this article in the code means and what most people think it means!
It does not mean door. It simply means that you need a way to enter the working space and a way to exit the working space. If you are in the working space and move two feet to the left/right and are no longer in the working space, you comply. I wrote Mike's changes book from 2008-2017, and edited nearly all of his books in that era. I know for a fact that he never beleived a door was required, and I would be very surprised if he did now. But he certainly could have changed his mind.
I totally get your understanding of the wording of the article, but images I've seen from Understanding the NEC show doors, which brought about my comment on what I think Mike was trying to convey. Maybe I got it all wrong.
Hi Mr Jackson ,my question is ,if we can use drop down hinges so we can opened the door and pull it out while we work,or bolt on doors ,i know some MCC we may have to remove the handle to do that but they can design cabinet that allowed us to take the door out without removing the handles. would like to see you opinion about it thanks Franklin ,New York
seems like the best solution for the open door problem is to change the kind of doors on the equipment so they are lifted upwards and not to the side. maybe another equipment manufacturing guideline is warranted.
That would require 8' of space in front of them in many applications, and if you had equipment facing each other you'd need twice that. I don't see that happening.
IMHO we allow more hot work than really needs to happen. We should strive to avoid it. End rant. This rule is a good start to clearer design rules and safer switchgear. Letting the designer, owner, and AHJ agree on solutions may be the best way to develop consensus on what is practical and meets the intent of a rule.
8:47 I have made this mistake a lot. I always thought it meant two exits. Ty for sharing.
Thanks Ryan. I try to keep up with everything that I can and you do a fine job with keeping us up-to-date on what's going on I appreciate everything you do
Sounds like the manufactures need to change the door hinge design to allow the door to open 180 degrees. Or provide an available hinge retro kit. Still would be super tough to get every manufacturer of every different panel, gear, or cabinet in any given electrical room to be on the same page anytime soon...
I'm a resi but I like the commercial/industrial content.
Great info Mr. Ryan, thanks a lot for your time and videos you share.
Thanks for info. You time is not wasted
Thanks for all the effort you put in.
Your videos are awesome!!!
Hey Ryan, you’ve always had great content so thank you! I had gotten Mike Holts 2011 library and watched you on the panel for many hours. Just ran across your channel tonight and subscribed. Thanks!
Thanks!
Great info on this one thank you!
Very helpful, thank you Sir!
Great video thanks for your time .
Tons more clear and straight to the point compared to Mike Holts cult.
PAD WORKING SPACE: My interpretation is that a xfmr doesn't need servicing. But anything with a fuse, etc does.
Transformers should last their entire service life without needing servicing.
IF you want to adjust the taps for some new equipment it feeds, that can be done - you're not standing in front of it, you're kneeling.
DOORS: If the door swing closed in the direction of egress travel, that's better. If it is fixed at open 90 degrees, not good. IBC 1010.1..2.1.
But IBC 1003.6 says the width of egress path can't be narrowed, which leads to the 4" max. protruding object rule. IBC Tbl 1020.2 has a min. width of egress corridor at 24" for mechanical rooms, but this is an escape! Still, the occupant load in an electrical room is very low. The NEC should address design of escape with direction of door swing and latchable or not at 90 degrees. Manufacturing requirements should change to have doors open past 90 degrees and be approved to remove door latches fixing the at 90. If the door can be fixed at 90, then a 32" path width, if hinged to freely swing and not latch, then a 24" path is ok.
SHIPPING CONTAINERS: Just need a fire saw, a good welder, and some steel.
Depends on your definition of "servicing". I'd agree, there's not much to mess with w.r.t. to transformers. HOWEVER, there are certainly some maintenance tasks one should perform from time to time. (i.e. inspection) One word: c-r-i-t-t-e-r-s No matter where you put it, critters are going to find it -- be it roaches, ants, spiders, scorpions (if you have 'em), mice/rats, lizards, snakes, birds, f'ing squirrels... In one of his pictures, the transformer is on a pad sitting in the great outdoors. Also, don't bank on fuses/breakers totally protecting them -- I've seen prolonged imbalances slowly cook 'em.
(PSA: Fire ants _love_ electricity.)
Thank you !!!!!!
GA Mr. Jackson. I'd like you to comment specifically about 110.26(C)(1) and the meaning of the word "entrance," which BTW most of the people assume it means "door"( Even Mike Holt!!) It is quite a challenge to argue what I understand the wording of this article in the code means and what most people think it means!
It does not mean door. It simply means that you need a way to enter the working space and a way to exit the working space. If you are in the working space and move two feet to the left/right and are no longer in the working space, you comply. I wrote Mike's changes book from 2008-2017, and edited nearly all of his books in that era. I know for a fact that he never beleived a door was required, and I would be very surprised if he did now. But he certainly could have changed his mind.
I totally get your understanding of the wording of the article, but images I've seen from Understanding the NEC show doors, which brought about my comment on what I think Mike was trying to convey. Maybe I got it all wrong.
what are the exceptions to panel boards and working space? what does existing dwelling mean , or other way to phrase that exception
Thank you sir, great explanations.
Hi Mr Jackson ,my question is ,if we can use drop down hinges so we can opened the door and pull it out while we work,or bolt on doors ,i know some MCC we may have to remove the handle
to do that but they can design cabinet that allowed us to take the door out without removing the handles. would like to see you opinion about it
thanks
Franklin ,New York
Hi Franklin! The Code doesn't really address that, but I think it is a reasonable concept, especially in existing installations
Thanks,for you respond
Can I come over with my code book and get some tutoring? I would love to have you as a mentor.
seems like the best solution for the open door problem is to change the kind of doors on the equipment so they are lifted upwards and not to the side. maybe another equipment manufacturing guideline is warranted.
That would require 8' of space in front of them in many applications, and if you had equipment facing each other you'd need twice that. I don't see that happening.
IMHO we allow more hot work than really needs to happen. We should strive to avoid it. End rant.
This rule is a good start to clearer design rules and safer switchgear.
Letting the designer, owner, and AHJ agree on solutions may be the best way to develop consensus on what is practical and meets the intent of a rule.
Mark the changes required.
nfpa 70e hierarchy of risk control
Thank you!!