Another excellent video! Dont just screenshot the flowchart, you have to watch the whole thing. At fault current levels the impedance of the gec can increase 100X if not bonded at both ends in ferrous raceway. There is a video out there showing fault current on a conduit raceway that dies not have wrench tight couplings. Its a good example of why bonding is important.
Really good stuff Ryan. Is there is violation shown at 30:52 ? Note the size of the GEC in the upper conduit vs the size of the bonding jumper. (Love your flow chart btw.)
Hello, thank you for your explanations and all amazing videos. Would it be possible to do an explanation video for grounding SDS specifically for solar installations? Thanks!
Question about transformer sealtite in the classified area slide. Does that bonding jumper needed if the conduit has egc and fittings are rated for gronfinding? Does the egc inside need to be sized as bonding jumper? Tough topic
I have always bonded both sides of a raceway for a gec, but does it really need to be if the raceway connection to panel is rated and punchedholes? Seem redundant if the main bonding jumper is in panel??
Hi Ryan! Is there a such thing as over-bonding anything? Such as in the case where an AHJ specifies beyond the NEC, are there any consequences to over-bonding?
First off Thank you! My question on 250.64. What if instead of GEC, there is EGC? Will the rule still applies, and both end need to be bonded with bonding bushings? According to definition GEC used to connect equipment to a grounding electrode.
@@aaronm5221 There is no such thing as a separately derived service. There are services, and there are separately derived systems. You don't need to bond the primary or secondary raceway at a transformer unless the 277V side goes through a concentric knockout.
Can you post this somewhere so it can be downloaded? Thanks for covering this topic, and also clarifying the requirements for conduits containing service conductors. We were discussing this at work just the other day.
What about 314.3 Exceptions Nos 1 & 2? continuing IS THE ENCLOSURE/BOX NONMETALLIC? ∨ yes DOES THE WIRING METHOD FEED THROUGH THE NONMETALLIC ENCLOSURE/BOX TO ANOTHER METAL RACEWAY/CABLE? ∨ no ∨ yes BONDING IS REQUIRED ON ONE END ∨ still yes BONDING IS REQUIRED ON EACH END (INCLUDING AT ITS NONMETALLIC BOX CONNECTION) AND, IF THE CONTINUING RACEWAY/CABLE IS METAL/METAL-ARMORED, BONDING REQUIRED ALSO AT THIS END’S INTERNAL/INTEGRAL BONDING CONNECTION OF THE NONMETALLIC BOX
What about 250.146(D)? IS THE RACEWAY OR CABLE METAL? ∨ no ∨ yes YOU NEVER NEED TO BOND NONMETALLIC RACEWAY OR CABLE ∨ still yes IS THERE AN INSULATED EQUIPMENT GROUNDING CONDUCTOR CIRCUIT CONNECTING TO ISOLATED GROUND RECEPTACLE(S)? ∨ no ∨ yes DOES THE RACEWAY/ CABLE THREAD INTO THE ENCLOSURE/ BOX? continue as-is ∨ still yes BONDING IS REQUIRED ON EACH END
![Grounding, System and Equipment [250.4, 2020 NEC]](http://i.ytimg.com/vi/lyD6gzEze68/mqdefault.jpg)
Best electrical teacher on UA-cam. The visuals make a huge difference.
Amazing video! This is one of those topics that I always wanted to understand clearly!! Thanks Ryan
Very well explained, and very timely information. Thank you for the improved flow chart, much appreciated!
thank you ryan for your free youtube videos , they really help me understand i think you’re the best teacher
Ryan, Thank You very much for this video.
Ryan, thanks so much for the information! Love the content. I'm definitely going to download this flowchart for myself & coworkers.
Great video, thank you very much for the extremely detailed review.
As always, Ryan demystifies the code! Thanks for all you do!
Awesome video dude..just what we needed. 🤗
Love your videos
You should do a flow chart when we can and can't use the next size up breaker
Another excellent video! Dont just screenshot the flowchart, you have to watch the whole thing.
At fault current levels the impedance of the gec can increase 100X if not bonded at both ends in ferrous raceway.
There is a video out there showing fault current on a conduit raceway that dies not have wrench tight couplings. Its a good example of why bonding is important.
Thank. You for what your doing lm 75 still in the trade never enough of information
Great information & explanation, very helpful. Thank you
Great job giving education
Thankyou for doing this!!!!!!!!
Really good stuff Ryan. Is there is violation shown at 30:52 ? Note the size of the GEC in the upper conduit vs the size of the bonding jumper. (Love your flow chart btw.)
29:41
Great video.
Hello, thank you for your explanations and all amazing videos. Would it be possible to do an explanation video for grounding SDS specifically for solar installations?
Thanks!
Question about transformer sealtite in the classified area slide. Does that bonding jumper needed if the conduit has egc and fittings are rated for gronfinding? Does the egc inside need to be sized as bonding jumper? Tough topic
Great explanation but on next video can we full view of the pictures for examples please. 🙏
I have always bonded both sides of a raceway for a gec, but does it really need to be if the raceway connection to panel is rated and punchedholes? Seem redundant if the main bonding jumper is in panel??
Hi Ryan! Is there a such thing as over-bonding anything? Such as in the case where an AHJ specifies beyond the NEC, are there any consequences to over-bonding?
Not really
Any idea as to *why* exactly standard locknuts are not sufficient for bonding service conductors, bud they are sufficient for most other situations? 🤔
First off Thank you!
My question on 250.64. What if instead of GEC, there is EGC? Will the rule still applies, and both end need to be bonded with bonding bushings?
According to definition GEC used to connect equipment to a grounding electrode.
Hi Mr. Ryan!
Thanks for such of a great information!
Greetings from Memphis,Tennessee!
Have you ever seen a gec in an AL RMC?
What's the difference between an EGC (Equipment Grounding Conductor) and a GEC (Grounding Electrode Conductor)?
whelp, there goes my next 40 minutes. thanks as always 💪
Coming out of a transformer isnt it considered a new separately derived sevice
@@aaronm5221 There is no such thing as a separately derived service. There are services, and there are separately derived systems. You don't need to bond the primary or secondary raceway at a transformer unless the 277V side goes through a concentric knockout.
Can you post this somewhere so it can be downloaded? Thanks for covering this topic, and also clarifying the requirements for conduits containing service conductors. We were discussing this at work just the other day.
@@stillthakoolest The link is in the description
Thanks Ryan!
What about 314.3 Exceptions Nos 1 & 2?
continuing
IS THE ENCLOSURE/BOX NONMETALLIC?
∨ yes
DOES THE WIRING METHOD FEED THROUGH THE NONMETALLIC ENCLOSURE/BOX TO ANOTHER METAL RACEWAY/CABLE?
∨ no
∨ yes BONDING IS
REQUIRED ON
ONE END
∨ still yes
BONDING IS REQUIRED ON EACH END (INCLUDING AT ITS NONMETALLIC BOX CONNECTION) AND, IF THE CONTINUING RACEWAY/CABLE IS METAL/METAL-ARMORED, BONDING REQUIRED ALSO AT THIS END’S INTERNAL/INTEGRAL BONDING CONNECTION OF THE NONMETALLIC BOX
I have seen pipe thread putty used in classified loc. Installs. Pipe thread dope, what ever..unbeliveable...
I am first. And first edited.
What about 250.146(D)?
IS THE RACEWAY OR CABLE METAL?
∨ no
∨ yes YOU NEVER
NEED TO
BOND
NONMETALLIC
RACEWAY OR
CABLE
∨ still yes
IS THERE AN INSULATED EQUIPMENT GROUNDING CONDUCTOR CIRCUIT CONNECTING TO ISOLATED GROUND RECEPTACLE(S)?
∨ no
∨ yes DOES THE
RACEWAY/
CABLE
THREAD INTO
THE
ENCLOSURE/
BOX?
continue as-is
∨ still yes
BONDING IS REQUIRED ON EACH END
@@brianerock Too much to try and put on a flow chart.