My home was built in 1910. I had the ungrounded "panel-of-death" upgraded (electrician's term, not mine) but the wiring is still tube/knob. When circuits trip, I leave them alone while I learn from all of you and study the code. A big "thank you!" and YES, I will hire an electrician to check my rewiring work before powering up.
I tried to apply the .83 rule to a detatched garage project last year. Had to switch from a 100 to 90 amp breaker. So if It was an auxiliary dwelling unit out back instead of a 1 car garage, the wire would have been fine for a 100 amp breaker. School of hard knocks, lesson learned.
THIS HELPED ME...THANK YOU, I WAS LOOKING IN THE CODE BOOK WHERE COULD I GET MY CONDUCTORS IN OTHER THAN DWELLING UNITS FOR MY HOMEWORK AND YOU ANSWERED IT PERFECTLY
If I understand this rule correctly, this rule can only be applied to residential as you mentioned, but also, the feeders or service conductors must supply the ENTIRE load of the dwelling unit. So if I have a bus fed service panel (no main breaker), and I feed an interior sub panel from a 100a breaker and then feed an air conditioner (or any other load) from another breaker in the service panel, I cannot use the .83 rule on the feeder to the interior panel. Is my understanding correct?
Depends on what you're calling a service panel, if it is the first panel that has over current devices in it then that is your main panel regardless of if there's a main. In that scenario correct you could not use the 0.83 rule any point past that first panel. But if you're regarding the service panel as like a meter center meter socket or something like that, then those are still considered service conductors all the way in until you get to the first panel. And you could apply that rule.
What if you’re in southern states where ACs are expected to be working during summer times? From my experience this will be increasing the power demand and hence the current drawn. Such situations are strictly commercial like.
so just explain if i’m wrong. 200 amp main breaker for the 186 amp load. i take 200 x .83 and get 166. i can now size my wire at 166 amps in the 75*C column since im over 100 amps?
Thank you for your time and dedication. Maybe you can help me clarify something. On the video you said a reduction can't be made on the service wires when dealing with a two family or multifamily dwelling. Why is that? Doesn't the service wires from the point of attachment to the meter enclosure always carry the entire load? And if no adjustment or correction factor is required then why can't the .83 reduction be made on the service wire.
It can be used on the individual runs feeding those units it just cannot be used on the service. I suppose it would be hard for them to calculate who would be using what, when. So they allow it on the individual feeders to each unit just not on the whole service.
What still boggles me is even though you can’t adjust ampacity on a commercial service , if you use the 6 breaker rule in a switch gear let’s say the total of the breakers can be more then the ampacity of the cable so it’s kind of like adjusting the ampacity of the service conductors as well even in commercial…
My home was built in 1910. I had the ungrounded "panel-of-death" upgraded (electrician's term, not mine) but the wiring is still tube/knob. When circuits trip, I leave them alone while I learn from all of you and study the code. A big "thank you!" and YES, I will hire an electrician to check my rewiring work before powering up.
Yep just work with a local license electrician and your local electrical inspector be the best thing ever did
You’re the man , excellent and very informative .Great to listen to you on the electrical code.
Thank you so much for all that you do!! Very useful content. God bless!
Let's go!
Well explained. Thank you!
Love your videos!
Let's go!!
Thank you for that relevant information. Appreciate your videos, full of knowledge. Happy new year to everyone watching this video....
Here here thank you sir
You helped me in so many ways. Love how you simplify it and also explain when you can't use it. My man 🤜🤛
🤜🤛
Happy New Year master!!
Happy New Year!
Good morning El code coach happy new year...!
Thank you 🙏
I tried to apply the .83 rule to a detatched garage project last year. Had to switch from a 100 to 90 amp breaker. So if It was an auxiliary dwelling unit out back instead of a 1 car garage, the wire would have been fine for a 100 amp breaker. School of hard knocks, lesson learned.
I love how much you explain in a short time in your videos! - BTW the pro version is totaly worth it!
Happy New Year 2022
This is good information,
Happy New Year Perry to you and you family and for the support that they give you that ables you to do this Thanks
Happy new year!
THIS HELPED ME...THANK YOU, I WAS LOOKING IN THE CODE BOOK WHERE COULD I GET MY CONDUCTORS IN OTHER THAN DWELLING UNITS FOR MY HOMEWORK AND YOU ANSWERED IT PERFECTLY
Can't find your "The .83 Rule Explained" video. This video did clear up a lot of my questions, thank you.
ruclips.net/video/Ny88wFEanGU/видео.html
Here is a real OG version it should get the job done though
Happy New Years Coach!
Happy new year!
Have a great year MY Coach. SORRY I MISSED YOU OVER
THE HOLIDAYS/
INDIANA JONEZ
Happy New Year!!!!
DEFINITELY A
"HAPPY NEW YEAR TO (U)
AS WELL"!!!
great information coach. you're the best. Happy New Year brother.
Happy new year!
not applied to sources: ie backfeeding SOLAR? I believe the wording indicates (not). Thanks!
What about a detached shop/barn with a service/meter separate from the home?
If I understand this rule correctly, this rule can only be applied to residential as you mentioned, but also, the feeders or service conductors must supply the ENTIRE load of the dwelling unit. So if I have a bus fed service panel (no main breaker), and I feed an interior sub panel from a 100a breaker and then feed an air conditioner (or any other load) from another breaker in the service panel, I cannot use the .83 rule on the feeder to the interior panel. Is my understanding correct?
Depends on what you're calling a service panel, if it is the first panel that has over current devices in it then that is your main panel regardless of if there's a main.
In that scenario correct you could not use the 0.83 rule any point past that first panel.
But if you're regarding the service panel as like a meter center meter socket or something like that, then those are still considered service conductors all the way in until you get to the first panel. And you could apply that rule.
Happy New Year pal
Happy New Year!!
Would I then change my breaker size as well?
How did we determine that we had a 186 amp load
So what is the point of ampacity tables if we are going to ignore them?
What about a 100 amp sub panel, that is fed from the 200 amp main panel ? It says must be entire load
Now this wouldn't apply to a sub panel correct?
Complicated coach. thanks
Stay with the 3/0 then have no trouble? Thank you.
LOL if you got money to burn
Has this been removed from the 2020 nec?
What if you’re in southern states where ACs are expected to be working during summer times? From my experience this will be increasing the power demand and hence the current drawn. Such situations are strictly commercial like.
Great question! This only applies to residential
so just explain if i’m
wrong. 200 amp main breaker for the 186 amp load. i take 200 x .83 and get 166. i can now size my wire at 166 amps in the 75*C column since im over 100 amps?
Thank you for your time and dedication. Maybe you can help me clarify something. On the video you said a reduction can't be made on the service wires when dealing with a two family or multifamily dwelling. Why is that? Doesn't the service wires from the point of attachment to the meter enclosure always carry the entire load? And if no adjustment or correction factor is required then why can't the .83 reduction be made on the service wire.
It can be used on the individual runs feeding those units it just cannot be used on the service.
I suppose it would be hard for them to calculate who would be using what, when.
So they allow it on the individual feeders to each unit just not on the whole service.
What still boggles me is even though you can’t adjust ampacity on a commercial service , if you use the 6 breaker rule in a switch gear let’s say the total of the breakers can be more then the ampacity of the cable so it’s kind of like adjusting the ampacity of the service conductors as well even in commercial…
Yeah the next size up real still gives you a little Grace
So with sizing the wire based off .83, 200 amps would be reduced to 166 amps but would the breaker capacity stay 200 amps or be reduced as well?
Great question! No you still keep the 200 or whatever size you originally came up with
@@ElectricalCodeCoach Thanks!
Coach..! If you put three separate 20 amps circuit by using single wires in a nonmetallic conduit how many EGC wires require ?
should be at least one
Thks coach
One ground wire per conduit equals to your biggest conductor. Let say you have two 20 amp # 12 wire and a 30 amp #10 your ground should be a 10 wire.
Yea alot of these California ahj'S always ask why I run 2/0 instead of 😁 😁 😁
George from cali
Happy new year
Let the sky make some noise tonight ✌️👍
Happy New Year brother