I've had enough..... ! According to my normally sweet and lovely wife has turned tyrant now that I've discovered your UA-cam channel ---> I am currently: "WASTING ALL OF MY 'CHORE TIME' WATCHING YOUR TRAINING & INFORMATIONAL VIDEOS"! The truth of the matter is that she is partially correct in that I have been watching your content nearly non-stop. But... it has absolutely NOT been a waste of time, but a great resource and keeps my mind somewhat occupied as I am being harassed to complete household projects waiting for decades to complete. LOL All kidding aside: As a retired sparky (mostly low voltage & communications) and volunteer Firefighter/EMT, I can honestly say that you have THE BEST educator skills combined with captivating materials of anyone I have ever had the pleasure (or pain! LoL) of watching or listening to. If you had been around in this format back in the 1970's and 80's, I have no doubt that I would have hired you to instruct my employees on everything "NEC". Any and all costs would have easily been recouped quickly and the crews would have been much more equipped to deal with all of the changes we have seen in technology. So... just a quick "THANK YOU!" 🙂 RBAD An old, ancient and somewhat crippled now-retired spark-maker & extinguisher of sparks located in the People's Republic of New Jersey. NJ = Home to the most restrictive and oppressive firearm "laws" in the USA. They just cannot comprehend the true meaning of "Shall Not be Infringed".
Years ago worked at a very large candy company. They had a 20,000 square foot room that housed 3 Mogul starch machines. They would deposit hot carmel, marshmallow etc into starch boards then let them set up for 24 hours in that room. When they built the plant they used regular 3/4" condulets with a short nipple feeding approved gasketed 4' luminares. When I told boss that they should have used explosion proof condulets that have 4 heavy screws to secure cover. Boss said regular condulets were okay because they used a rubber gasket. Same cheap boss would purchase the shortest copper colored explosion flex to feed motors, solenoids & micro switches where I always used flex 3' long. Could not believe that they used 480 volts on all start stop stations, micro switches etc on a 30 amp time delay fuse. Was able to down size control fuse to a 10 amp fuse. Mechanics had to always wait at least a hour to let dust settle then sweep floor then hose down floor and area where they had to weld. Had 4 roof hatches that just sat on top of curb box and could move in the event if an explosion. Installed some explosion proof luminares where the mixed chemicals. They had to cuf 2 long slots on walls think it was every 50' that would blow out in an explosion. They used a very thin chaulk on only one sidde of cuts to keep bugs & water out. Thanks Ryan for another great vid.
I like the way you've explained this article to make it simple to understand. I don't remember seeing much on seals. Could you make a video on seals. Especially when it come to purge systems boundaries, equipment etc. Thanks for the video
That was an impressive 2 hours worth of article 500 you introduce me to concepts. They'll have to meditate on..... My question to you is, did you do that whole video with only one break? Wow!!
Great video! Thank you for explaining things so clear with examples and pictures. You made it very interesting. Please keep posting such great videos. Thank you very much deep down from my heart.
38:28 ... I love watching some of these HVACR and safety videos so I can point out the errors. Propane is obviously a typo. It boils at around -44.1 deg f. It is a gas. It's flash point is -158 deg f, and it's saturated vapor pressure is around 110 to 115 psig at room temperature. Seriously, now, that has got to be a colossal typo.
You mentioned there was a table describing the properties of various flammables in the annex of the NEC handbook. I can’t seem to find it in my 2017 handbook. I think I remember using the table in my handbook about 15 years ago...?.?
Talking about the acetone bought something up. A few years back I asked if they could install a second battery operatedb hand opetated in busy hallway that housed 3 elevators in the hospital. Believe all hallways that elevators emptied into had triple 5/8" fire rated sheetrock on heavy metal studs. The hand santizers held maybe a quart of flamable alcohol based liquid. Safety department that they were permitted to have 1 hand station maybe every hundred feet. Sermed liken over kill. Entire building had smoke detectors and a fire pump that sparkies test ran every week.
Thank you for the excellent presentation. Your effort in creating and sharing this valuable resource is greatly appreciated. I have a question regarding the difference between Class 1 - Division 1 and Division 2. We are currently considering Division 1 for equipment leakage and breakdowns. However, I am wondering why we are not treating these events as abnormal and defining them as Division 2 instead. After all, it is not normal for hazardous equipment to leak or break down, is it?
I agree with you. If the only time you have an ignitible mixture is when equipment breaks down, I would classify the area as Division 2. But if a leak would directly cause an explosion, that owuld be Division 1. Or if a leakage is a common occurance at the facility, that too would be Division 1. But, again, I think most locations that are only hazardous due to leakage are Divisision 2.
I must say thanks for your video just did my master electrical exam (E-1) and passed hazardous locations was one of my weaknesses in the code book and there is quite a few questions on this test don’t how much someone reads chapter 5 it’s doesn’t come close to they way you explains this chapter
Great question. Unfortunately...nowhere. Section 502.115(A) used to call it out specifically. Now, it just says you need enclosures that are identified for that location. Using the definition of "identified" the AHJ could allow just about anything, although I think the intent is to use dust ignitionproof.
Excellent presentation. Thank you for taking the time to put this together and allowing people to access it for free.
I've had enough..... !
According to my normally sweet and lovely wife has turned tyrant now that I've discovered your UA-cam
channel ---> I am currently:
"WASTING ALL OF MY 'CHORE TIME' WATCHING YOUR TRAINING & INFORMATIONAL VIDEOS"!
The truth of the matter is that she is partially correct in that I have been watching your content
nearly non-stop. But... it has absolutely NOT been a waste of time, but a great resource and
keeps my mind somewhat occupied as I am being harassed to complete household projects
waiting for decades to complete. LOL
All kidding aside:
As a retired sparky (mostly low voltage & communications) and volunteer Firefighter/EMT,
I can honestly say that you have THE BEST educator skills combined with captivating materials
of anyone I have ever had the pleasure (or pain! LoL) of watching or listening to.
If you had been around in this format back in the 1970's and 80's, I have no doubt that I would
have hired you to instruct my employees on everything "NEC". Any and all costs would have easily
been recouped quickly and the crews would have been much more equipped to deal with all of the
changes we have seen in technology.
So... just a quick "THANK YOU!" 🙂
RBAD
An old, ancient and somewhat crippled now-retired spark-maker & extinguisher
of sparks located in the People's Republic of New Jersey.
NJ = Home to the most restrictive and oppressive firearm "laws" in the USA.
They just cannot comprehend the true meaning of "Shall Not be Infringed".
Wow, thanks so much for that. I really appreciate it!
Years ago worked at a very large candy company. They had a 20,000 square foot room that housed 3 Mogul starch machines. They would deposit hot carmel, marshmallow etc into starch boards then let them set up for 24 hours in that room. When they built the plant they used regular 3/4" condulets with a short nipple feeding approved gasketed 4' luminares. When I told boss that they should have used explosion proof condulets that have 4 heavy screws to secure cover. Boss said regular condulets were okay because they used a rubber gasket. Same cheap boss would purchase the shortest copper colored explosion flex to feed motors, solenoids & micro switches where I always used flex 3' long. Could not believe that they used 480 volts on all start stop stations, micro switches etc on a 30 amp time delay fuse. Was able to down size control fuse to a 10 amp fuse. Mechanics had to always wait at least a hour to let dust settle then sweep floor then hose down floor and area where they had to weld. Had 4 roof hatches that just sat on top of curb box and could move in the event if an explosion. Installed some explosion proof luminares where the mixed chemicals. They had to cuf 2 long slots on walls think it was every 50' that would blow out in an explosion. They used a very thin chaulk on only one sidde of cuts to keep bugs & water out. Thanks Ryan for another great vid.
Ryan keep up your excellent presentations thank you for your great contribution to our electrical industry.
Thank you, Sir. Please keep the UA-cam Video's coming. I still want to build that transformer, that was mind blowing!
Sir.... I love you. (Working to get my elec contractors license.... and Classified locations has been a weak point for me. Thank you.)
Great video, awesome explanation
I like the way you've explained this article to make it simple to understand. I don't remember seeing much on seals. Could you make a video on seals. Especially when it come to purge systems boundaries, equipment etc. Thanks for the video
Great presentation, thank you!
I’ve seen you at mike holts classes, you’re great!
Once again great explanations and great examples. You're the NEC whisperer. 👍
That was an impressive 2 hours worth of article 500 you introduce me to concepts. They'll have to meditate on.....
My question to you is, did you do that whole video with only one break?
Wow!!
Yep!
Great video! Thank you for explaining things so clear with examples and pictures. You made it very interesting. Please keep posting such great videos. Thank you very much deep down from my heart.
thanks for the info Ryan god bless you..
Great class, thank you for putting that together!
Thanks a lot you have clarified a lot of things! Thanks!
Dang that is incredible your experience is amazing
Excellent, well done. Very informative. Thank you Ryan.
Excellent class! Thanks.
I appreciate you Sir, great video.
38:28 ... I love watching some of these HVACR and safety videos so I can point out the errors. Propane is obviously a typo. It boils at around -44.1 deg f. It is a gas. It's flash point is -158 deg f, and it's saturated vapor pressure is around 110 to 115 psig at room temperature. Seriously, now, that has got to be a colossal typo.
You mentioned there was a table describing the properties of various flammables in the annex of the NEC handbook. I can’t seem to find it in my 2017 handbook. I think I remember using the table in my handbook about 15 years ago...?.?
There was at one time. It looks like they got rid of it.
Outstanding video, thanks for making this available
It's a golden video!!
Talking about the acetone bought something up. A few years back I asked if they could install a second battery operatedb hand opetated in busy hallway that housed 3 elevators in the hospital. Believe all hallways that elevators emptied into had triple 5/8" fire rated sheetrock on heavy metal studs. The hand santizers held maybe a quart of flamable alcohol based liquid. Safety department that they were permitted to have 1 hand station maybe every hundred feet. Sermed liken over kill. Entire building had smoke detectors and a fire pump that sparkies test ran every week.
Thank you very much!
Thank you Sir!
great job
Thank you for the excellent presentation. Your effort in creating and sharing this valuable resource is greatly appreciated.
I have a question regarding the difference between Class 1 - Division 1 and Division 2. We are currently considering Division 1 for equipment leakage and breakdowns. However, I am wondering why we are not treating these events as abnormal and defining them as Division 2 instead. After all, it is not normal for hazardous equipment to leak or break down, is it?
I agree with you. If the only time you have an ignitible mixture is when equipment breaks down, I would classify the area as Division 2. But if a leak would directly cause an explosion, that owuld be Division 1. Or if a leakage is a common occurance at the facility, that too would be Division 1. But, again, I think most locations that are only hazardous due to leakage are Divisision 2.
Great video!
Awesome vid. Thank you
thanks so much i learn alot with you videos
GOD bless You
Awesome and well informed video...
I must say thanks for your video just did my master electrical exam (E-1) and passed hazardous locations was one of my weaknesses in the code book and there is quite a few questions on this test don’t how much someone reads chapter 5 it’s doesn’t come close to they way you explains this chapter
Thank you, and congratulations!
Thanks!!!!
Great video. You have been an inspiration for years. Thanks for all you do.
Valuable info on chapter 5 Ryan tnx
16:46 saving to study!
how does the explosion proof equipment differenciate with the IP classification of equipments?
Great video , thank you so much
Very professional!
Epic video, but audio sometimes is tough.
Where in nec does it say we need to use a dust ignition proof be used?
Great question. Unfortunately...nowhere. Section 502.115(A) used to call it out specifically. Now, it just says you need enclosures that are identified for that location. Using the definition of "identified" the AHJ could allow just about anything, although I think the intent is to use dust ignitionproof.
Thanks!!
The town is hiring for construction inspector