This fellow got to be the coolest fellow on youtube explaining this type of stuff in such a consise manner and pleasant demeanor. Thank you!
@BenjaminSahlstrom
4 жыл бұрын
Thanks! Glad it was helpful.
@m.v.d.4064
3 жыл бұрын
@@BenjaminSahlstrom Hello....love your videos very well detailed. Thanks a bunch. I was wondering if you could clarify something for me. I have meter box, disconnect and main panel on the same building. If I understood you right. I have to connect disconnect box to grounding rod, then to main panel with bonding screw removed. From main panel I run a grounding wire to ground rod on a separate grounding bar and connect all my ground wire to that bar. Thank you any help will be greatly appreciated.
@PaulJones-bo8gt
2 жыл бұрын
I totally agree!
@alanmcrae8594
2 ай бұрын
Liked & subscribed! A very clear & concise video that explains exactly what a bonding screw does & why. No annoying music, no wind noise, no shaky video, and no rambling to find the right words. Just straight up crystal clear technical explanation.
@smokiesleather
4 жыл бұрын
You are literally the only guy on here that makes this stuff easy to understand and that explains it thoroughly so that there are no questions/doubts. Thanks man!
@kaikaimeha2027
5 жыл бұрын
I like easy fast and efficient information like what you just gave. Straight up without going in circles and loosing attention on the subject! Great job mate! 🤙🏽
@stroys7061
4 жыл бұрын
Right on - Times 2!
@lalarobert
Жыл бұрын
Great video. I work for a local utility that has many rural horse farms. Every winter we get trouble calls for horses not wanting to drink water due to stray voltage in their tubs which is caused by their heaters. We would get anywhere from 2-6 volts in the water. We always thought it would be a bad neutral or poor grounding conditions somewhere on the property. As it turns out, all of these farms have had sub panels installed that needed their bonding screw removed.
@isaiahcorona6198
Жыл бұрын
Why only when it’s cold (every winter)??
@lalarobert
Жыл бұрын
@Isaiah Corona the hands on the farms place heaters in the horses water trough to prevent it from freezing. Heaters are only needed in the winter.
@rupe53
5 жыл бұрын
Other than calling that first panel a "cut off" I think it's a well explained. For those who want to know why we don't bond (connect) the neutral and ground at other sub panels, it creates what's called a ground loop where you have the possibility of unwanted voltage in the wrong wires, which may false-trip GFIC breakers and interfere with other electronic gear. (that we didn't have 40 years ago) Ground rods (a pair, a minimum of 8 ft apart) get tied in at the first point of disconnect, meaning the first place you find a breaker that shuts off the whole service. Pulling the meter does not count as a point of disconnect, but a meter pan with a breaker does count and will have room for this junction. After that point everything will need to be separated into white and green wires. (or identified with colored tape, shrink wrap, etc) Oh, one more sticking point in the code is about the ground wire being continuous from the main disconnect to the rods. This means one wire WITHOUT any breaks going from the far rod, and through the connection at the closer rod, then onto the bonding point. NOT 2 wires being joined under a ground clamp out in the yard. NOT 2 wires making a home run to the panel. No splices and one wire under one screw / clamp.
@BenjaminSahlstrom
5 жыл бұрын
Thanks for sharing your knowledge! I have noticed that the proper term for what I call the "cut off panel" should simply be called a "main disconnect". Wish I could update that in the video somehow. Thanks again and happy new year! Ben
@mostlikelywedoitservices9743
5 жыл бұрын
Rupe could you explain how when the main ground to pannel breaks that 220 can show up at a 115v outlet. voltage in the home become crazy.
@rupe53
5 жыл бұрын
@@mostlikelywedoitservices9743… The problem you mention is not that an outlet will all of a sudden have 220 or 240 volts but it will become unbalanced. The simple explanation is that each outlet is one leg of the 240 (120 each) tied to the neutral. If the neutral is lost at the outlet you can't run the appliance (open circuit) but if the neutral is lost at the entrance panel or the service wire going to the pole (more common) what happens is the power follows the path of least resistance because it has to go somewhere, which is usually back to the panel and to another neutral wire going to another appliance, which may be on the other leg of the 240. Depending on the resistance this voltage could be 150 - 190 on one leg and the balance (up to 240) will show up on the other leg so it will be between 50 - 90 volts on the other leg. IOW, in the most common sense you would notice some bright lights and some dim lights around the house but these days with fancy electronics it's not that simple. Stuff will burn out.
@mostlikelywedoitservices9743
5 жыл бұрын
@@rupe53 Thank you for the explaining how and why. I am constantly studying to be more valuable to my customers. Thanks again.
@rupe53
5 жыл бұрын
@@mostlikelywedoitservices9743… BTW, what I explained in my last post was a lost neutral and you had asked about a ground, which is different. Most people wouldn't notice it if none of their appliances ever had an issue needing ground. OTOH, because you mentioned the classic high voltage problem I tried to go with what I though you wanted. Hopefully I was correct in my assumption.
@DucCuong_Tran
Жыл бұрын
Very clean about the green screw inside the panel 👍 thanks that's what I need to know.
@KevinCoop1
4 жыл бұрын
Great job Benjamin! You didn't tell "why" the bonding screw is to be installed in the main panel. In the main panel, neutral and ground conductors are on the same bars. The issue is that the N bars are insulated by plastic mounting means. So the green screw bonds or grounds the panel can in case of short to the metal can. Sub-panel has ground bar screw mounted to the can, therefore connect to grounding system. Respectfully, Kevin
@royakalah181
2 жыл бұрын
very clear explanation on the issue of joining neutral and earth in main panel and their separation in the subpanels
@ip5232
4 жыл бұрын
Best videos I ever seeing! Can clearly underhand , he goes to the point on what he is explains, and NOT at all like others that wanted their face to show,more than necessary and leave the content of the video out. Thanks!!
@seantu1496
4 жыл бұрын
Great video. If you haven't already, you might want to do another one on why you need to remove the screw. I would suggest starting with how a GFCI works and what leaving the screw in the sub panel will do to the things :)
@Mister_Mass
5 жыл бұрын
Ambiguous answers everywhere I've looked lol. This was nice and short and to the point. Very helpful!
@Feldspar__
4 жыл бұрын
"Chuck it in the grove." My man is living that country life. Cicadas buzzing.
@racenuke
2 жыл бұрын
Thanks brother. I'm a commercial electrician and was trying to figure out exactly how the residential side does it. Nice explanation!
@stroys7061
Жыл бұрын
Great explanation. I had a Generac generator installed and upgraded my service panel from 100 to 200 Amp. The green bonding screw is not installed and there is a separate grounding bar. The panel outside my house is where the neutral is bonded because it serves both the generator sub panel and the house 200 amp sub panel. This matters to me because I added a few new circuits and split a couple, so knowing that the growing wires needed to go directly to the grounding panel is critical.
@eloisemorley8906
3 жыл бұрын
Kudos, Ben. I've watched many too many videos and read many too many texts and you are the one who made it clear to me that a neutral and a ground cannot be connected. Thanks.
@johnmorris646
2 жыл бұрын
This video actually answered my questions regarding the neutral and ground in a subpanel box thank you
@royallclark6331
5 жыл бұрын
Thank you for a great video Ben. So nice to get the information needed without the hype.
@YourAflacGal
Жыл бұрын
Thank you! Finally the separate ground bar was explained well!
@electricianron_New_Jersey
5 жыл бұрын
The main bonding jumper is required at the MAIN DISCONNECT. This is the only place an equipment ground is bonded with the neutral conductor. Otherwise, current will flow on grounded parts and cause objectionable current flow. NEC 250.6 goes into great detail of an effective ground fault current path is. NEC 250.28 is where you'll find out about the MBJ.
@stevelopez372
5 жыл бұрын
electricalron Thankyou, finally someone injects the NEC into the mix. And as you can tell the Saga of Grounding and Bonding confusion continues,Lol.
@RallyBlueSubaru
10 ай бұрын
Thank you for an easy explanation with good visuals!
@allancastelli9610
4 жыл бұрын
Thanks for these videos, I will be adding grounding rods to my subpanel in my remote building.
@FrugalRepair
6 жыл бұрын
Thanks! I'm wiring up an AC disconnect for a PV (solar) system. The formula in the code indicates that I need to run #4 AWG ground and #4AWG Neutral from my Breaker panel (combines the output of 2 inverters) to the AC Disconnect, which then ties directly to the service meter (at the meter lugs). My question is about the ground wire size. After the AC Disconnect (where the neutral and ground are combined) the copper wire then goes to the ground rods. This is allowed to be #6AWG, then what is the point of having the #4 AWG run with the (2) 120V conductors? I'm asking because I have to pull these wires on a long run, and because I'm curious. Any thoughts?
@Maggie-Gardener-Maker
2 жыл бұрын
I am a longtime subscriber and viewer. You're channel is one of my favorites on electricity. I would appreciate your opinion as well as any knowledgeable viewer's opinion on when not to use grounding screw on main first panelboard as I describe in my home. I own an old home that has a main panel inside the house, it's the first and only panel coming from meter. It doesn't have a bonding screw. I was thinking I need to add the bonding screw but then I consulted a book I have and read that the main panel must not use the bonding screw if the breaker or switch is used, such as in a panelboard on the load side. I belive that my panel fits that description because the hot wires from meter go directly into a 100 amp breaker and the neutral from meter goes into lug on the neutral ground bar in panel. The book I got this information from page 93, section Bonding the busbar, in the 45th edition of Wiring Simplified that is based on 2017 NEC code. Author F P Hartwell.
@scottzingaro1727
3 жыл бұрын
Great Explanation!! Very easy to understand and very well presented.
@jimmckenzie5144
3 жыл бұрын
Another great job explaining what a BONDING SCREW actually does and when you don't use it in a sub-panel. Excellent!!!! And, thank you!
@דנילוינסון
2 жыл бұрын
Ben you are amazing, explain so good , so clear with such understandable drawings Wow!!!! Thanks
@scottcarter7515
6 ай бұрын
i have a subpanel in my single family home in northern California that is fed from the main service panel with 2 hots and a neutral only, no grounding wire. The grounds and neutrals are all bonded together in the subpanel, including a #6 to earth grounding rod at the subpanel. This house was constructed in early 1990's, have the codes changed since then? Should I be looking at adding a ground wire from the main service panel to the subpanel, and separating the grounds and neutrals? Thanks so much for the great content!
@jaredrobbins2120
2 жыл бұрын
Wow thanks so much for that info. You really helped me out. I’ve done electrical work my whole life but with limited knowledge of how all of the tecchnical stuff works. Im starting to understand more, the older I get.
@kurtknapp6201
2 жыл бұрын
Excellent videos. A lot of misinformation out there, including from electricians. While I’m well versed in residential wiring, it was the main service entry that I was never clear on, especially with a main outside disconnect and a main panel inside the house several feet away. Not only can I now fix the second property I have, but this clearly shows the licensed electrician, and building inspector got my main home wrong. They have the neutral and ground bonded together in main panel, yet I have an external disconnect 20ft away, and the ground neutral are bonded there as well. There is no separate ground bar in the main panel. Another job from a pro I must fix. Appreciate your posts, best out there.
@johnathanfaircloth9639
3 жыл бұрын
Your awesome dude. Straight forward information with demonstration like I was looking for. Thx
@perry9492
4 жыл бұрын
In some panels you can remove the bonding strap between the two neutral bus bars and make the left one a ground bus. This keeps you from having to install a separate ground bus.
@LoganAddisMusic
2 жыл бұрын
Thanks!
@ahdam82
Жыл бұрын
Quick and informative. Good work!
@rogermabry2816
Жыл бұрын
Very well done , great job in explaining
@jaysidhu3313
5 жыл бұрын
to the point and no bs talk. good job buddy
@scarecrow27jf
5 жыл бұрын
Great video but why NO green tape on your incoming ground wires?
@CARYBORDERSHART
2 жыл бұрын
Great videos. Very helpful, to the point and easy to understand. That's a skill in and of it's self.
@kevinkenney5228
2 жыл бұрын
Good show Ben. Whoever installed my sub panel didn't pay any attention to segregating (hate that word but it fits) the gnds and neutrals. I really appreciate the close up picture of the Gnd screw and where it goes, and the other close ups. Question - When changing out a Sub panel and some wires are too short to reach the correct Bars/busses, what are the rules for installing a additional bar/buss to connect the short wires to? Rather than using a wire nut and pigtail to make it reach?
@farstrider79
2 жыл бұрын
Thank you, that was a very clear explanation.
@MichaelCarreras
Ай бұрын
Quick, and thorough. Thanks.
@gibsonleather5835
3 жыл бұрын
Excellent job, Ben! Thanks for taking the time to make these, and explain them. Very Handy! --God Bless.
@davidcarpenter5467
4 жыл бұрын
Great practical stuff I've wondered about but never known where to find out/discuss.
@jessstuart7495
3 жыл бұрын
I should probably go check if my two subpanels have the bonding screws or not. They were here when I bought the place, but I've never checked this. Our GFI's do trip every once and a while (a couple of times a year) for no apparent reason.
@jamescole3152
Жыл бұрын
Well done. You explained it real good.
@hammerdowntrucking9146
3 жыл бұрын
Thank you! Just answered a bunch of my questions!!
@jeffron7
2 жыл бұрын
Thank you for such a clear explanation!
@PAULYPOLLACCIA
3 жыл бұрын
Love the video, was looking for solid information. Thanks again, BTW I subbed.
@pumarodriguez3964
3 жыл бұрын
Great explanation Benjamin! 👍🏼
@jbrewington10
3 жыл бұрын
Answered my question real quick.
@Dominic-jb1uf
4 жыл бұрын
Great info! Thanks. The video shown is perfect and to the point.
@exortiz64
4 жыл бұрын
Great way of explaining such that it is understandable. Thanks so much
@Nolaman70
3 жыл бұрын
Found mine in the main panel. It's a strap in mine, was looking because I will have to add a ground bar to the main panel and remove the strap for when I add a automatic transfer switch before the main panel. Then i will bond in the transfer switch, as it will be in first place.
@2loco
6 жыл бұрын
Interesting how you fellas do your wiring. In Australia, we use green/yellow for earth, black for neutral, and red/white/blue for the 3 phases. The neutral and earth are also bonded at the point of entry and we call this the M.E.N link. We use a modified version of the TNC-S earthing configuration. Our voltages are 240v from line to earth or neutral and 415v from line to line.
@ronaldmoore5187
4 жыл бұрын
I see that you have the white and bare wires on the same bar. So why would it be necessary to separate them in another box if it goes to the first box that has the wires mix
@limadu671
4 жыл бұрын
Since the Disconnect Box near the meter has a grounding rod, does the subpanel still need a grounding rod?
@duds2323
3 жыл бұрын
No
@truthsayers8725
3 жыл бұрын
@@duds2323 depends on the AHJ....
@emmanuelgutierrez8616
Жыл бұрын
Do you need a bonding screw for each busbar side? Or is the grounding bar already touching the box and you just need to put it in the neutral bus? First shut off point after meter/main and only box.
@matthawley5896
3 жыл бұрын
So if the neutrals and grounds share a bus-bar, there should be a bonding screw? Thanks for the videos.
@armymobilityofficer9099
5 жыл бұрын
I have an older house. The green screw was missing. The inspector said that I could either find a replacement screw or run a copper wire from the neutral to lug screwed into the base of the breaker box.
@dwightvoeks9970
5 жыл бұрын
Just the info I needed. I do home inspections and never learned about the bonding screw. I've been inspecting panels looking for bonding straps or wires. Now I will look for the presence of green screws on the neutral bus
@derekevans7780
5 жыл бұрын
Make sure you know when to look for it and not. Also, when it's not needed. Master electrician and Electrical contractor
@athhud
5 жыл бұрын
So you have no clue how to do your job and pass/fail based on guesses???
@crunch9876
4 жыл бұрын
athhud that’s all home inspectors
@HaploBartow
3 жыл бұрын
Does that cutoff, or "main", panel outside have a ground wire connecting it to grounding rods? Or does only the subpanel inside have a direct connection to them? If so, why?
@hardqore-gaming9048
4 жыл бұрын
I just liked and subscribed to your channel. I have been able to achieve so much on my own and safely with your videos. Thank you...
@andrewmcivor7265
2 жыл бұрын
Don Smith finally added a reason why you tie the grounds back to a single first point. Amplifier hum. There will be other reasons as well. rupe53 contributed a false trip on a GFIC. I would like to know about those scenarios as well as the color of the bonding screw. While following the electrical code is one reason to do proper grounding, it is not the only reason.
@benjimenfranklin7650
5 жыл бұрын
Square D always made great panels and I really like there breakers.
@sku32956
4 жыл бұрын
i think they are the best
@benjimenfranklin7650
4 жыл бұрын
@@sku32956 Yeah me too especially if ever got to work on FPE panels.
@LoveForTheTruthTV
2 жыл бұрын
Ben this was short and sweet. I got it.
@larry8529
2 жыл бұрын
To answer your question about the remaining current still flowing (albeit very small amperage) through copper gas line, etc. after separating your ground buss from neutral bus at sub panel: We know current is flowing through the neutral conductor at the sub panel BACK TO THE FIRST DISCONNECT PANEL WHERE NEUTRAL AND GROUND BUSSES ARE BONDED TOGETHER. Feed-back initiates here and then returns BACK TO THE SUB PANEL via the grounding conductor and to any grounded appliances etc. downstream. Furnace electrical components are grounded to the furnace cabinet, and your copper gas supply line is as well. SIMCE YOUR FURNACE IS SUPPLIED BY A GAS LINE CONDUCTOR PLEASE USE A DIELECTRIC UNION at the gas line-to-furnace connection point! Gas stoves, gas HWH and all other end points connected to both power and gas should use dielectric gas line connectors as well.😉
@christopherbryant4318
Жыл бұрын
Hi Ben. Love your videos. I have a question I'm hoping you can help me with. I have a sub panel that has the bonding screw removed like it's supposed to be. My main panel has the bonding screw attached. My sub panel is in my tiny house about 25 feet away. My problem is, when the wiring was originally run, only three wires were run to the sub panel. 2 hots, and a neutral. The ground is just a very large rod driven into the ground. Is that ok, or do I need to run a separate ground wire back to the panel? I've checked the entire system and everything is showing grounded and wired correctly. Thank you so much and keep making those great videos. Chris.
@tzimme7639
3 жыл бұрын
Bro, I cant say thank you enough for your videos. Been re-doing the electrical on my house and have lived on your channel. Many thanks! Can you answer two questions for me? 1.) At the main disconnect by meter socket, you point out a yellow cable. What is the other striped cable? 2.) On the panel inside, did you mount the grounding bar straight to the panel OR did you use some non-metalic screws/spacers? Thanks!
@rickshawphilippines
4 жыл бұрын
Sure wish some of my inspectors watched your stuff
@smitlag
2 жыл бұрын
Ground loop is really a small difference of potential between grounds. Ideally all grounds would be at absolute zero potential. But have two or more separate grounds creates a situation where one or more can be at a slight difference from absolute zero. Thus this creates small induced currents that can cause disruption to sensitive electronics in your home or wherever this occurs. As an example ground loops are famous for causing ac hum in amplification systems. So you are always best to have one master connection point to an earth ground. Don't confuse grounding with electrical bonding of metallic raceways and or equipment boxes.
@rudyruiz9521
2 жыл бұрын
The sub panel has that ground you showed on the left and an earth ground also connected in the same spot, correct?
@mayviewmo
6 ай бұрын
How do you test to make sure that your feed from the disconnect is got the grounding screw? Is there a way to test it with a meter?
@duckbizniz663
3 жыл бұрын
Hi Ben. Uhmmmm. So your cut-off panel outside of your house has a neutral bar, and I see white wires (copper wires wrapped in white insulator, i.e. neutral wiring) and a lot of bare copper wire (grounding wires) secured to the same neutral bar.. Does that imply you are mixing neutral wiring plus grounding wiring on the same bar? The green screw connects the neutral bar to the metal panel. Is there a separate grounding bar (where bare copper grounding wires are secured to) in your cut-off panel box? If so then your green bolt in your cut-off panel has just connected your neutral bar to your grounding bar. I learned that having the neutral wiring connected to the grounding wiring at the initial point where electricity enter a residence and not to have neutrals and groundings connect in a sub-panel was to avoid objectionable current, that is randomly wondering current that might hurt someone. So we only electrically link neutrals to groundings at Service Entry Points like cut-off panels, service panels, and other entry points from the power company to consumer residence.
@adamlangley7341
2 жыл бұрын
I have a GE panel, that has a spot for a bonding screw on both the neutral and ground bars. Should I use two bonding screws?
@elBusDriverKC
4 жыл бұрын
What is the danger when it comes to bonding in a sub panel? Is there risk of current heading through neutral loads upstream that would otherwise head through ground on the main panel?
@MaxPowerElectric
4 жыл бұрын
From what I can tell, it seems to be an issue of turning the grounding wire into a current-carrying conductor by wiring it in parallel with the neutral. With this current comes voltage drop and thus a potential to exist between earth ground and the chassis of any equipment bonded to the downstream ground wire, creating a possible shock hazard scenario. In other words the earth ground can become a much more likely return path through a human body due to exposed metal on equipment having small voltages above earth ground, again a result of voltage drop due to current and resistance in the equipment grounding conductor
@smiken0952
3 жыл бұрын
Thanks man! Very helpful
@analajaji
3 жыл бұрын
If the main panel is bonded to the neutral, wouldn't the panel box give a shock if it is touched due to returning power carried by the neutral when load is not balanced inside the house.
@gotchaplumber
Ай бұрын
Does the green screw get removed from main panel only if one has a sub-panel?
@josemontiel8958
2 жыл бұрын
What can I do if the sub panel doesn't have ground wire? Install new ground wire or install the green screw? Thank you.
@PaulJones-bo8gt
2 жыл бұрын
That was great advice 👍
@bigdaddy7670
4 ай бұрын
Excellent video!!
@nickglaude9071
Жыл бұрын
Can I isolate one of my neutral bars and bond it to the box. Then use that as my separate ground bar?
@coolhotct1
4 жыл бұрын
Great education, answered the questions I had.
@howtodoitdude1662
3 жыл бұрын
So all new panels come with a bonding screw and depending if it’s use (main or Sub) that’s what determines if you use or remove the bonding screw? Am I getting this right?
@isabellavision
3 жыл бұрын
That's my understanding-- only the main panel should have the bonding screw. Sub-panels keep the ground and neutral separate.
@pearnold
5 жыл бұрын
Quick question, if you were on the main panel, does that mean the neutral and the ground can go into the same bus? I'm installing a NEMA 14-50. Just trying to be very cautious with how I install a ground in the neutral. The box is definitely the main and first electrical panel from the power source (city meter)
@CountryLivingOnTheFarm
6 ай бұрын
What if my meter enclosure and breakers are all in the same panel. Do I need a green screw for that? What if the panel didn’t come with a green screw?
@TheTheo58
4 жыл бұрын
I understand the adding the separate grounding bar at the breaker panel and any subsequent sub panel that maybe installed later, however shouldn't the single ground conductor been wrapped with green phase tape or stripped green as a positive indication it's a ground wire? As the yellow stripping was done with the neutral conductor.
@BenjaminSahlstrom
4 жыл бұрын
Correct. This should have been done and I may add it at some point. Good catch!
@markvieto4118
3 жыл бұрын
Im relocating my panel from the basement to the second floor. Not physically moving the panel, installing a new 100 amp panel on the second floor ..... I installed a 100 amp breaker in the panel in the basement & ran # 2 wire to new main lug 100 amp panel. Is that technically a sub panel..... do I have to remove the bonding screw on the new panel on the second floor & add a ground bar.
@jp9403
Жыл бұрын
Why isn't the ground bar included when you buy a subpanel?
@ldubel5922
3 ай бұрын
The screw bonds the N to Gnd IF... the neutral in the meterbase is isolated. That wasn't mentioned. Many will actually bond to Gnd in the meterbase, which means then the screw in the panel is removed. So, basically in the meter enclosure a bonding strap would be used and the grounding would be from THAT point. It would be a CONSUMER'S SERVICE GROUNDED AT THE METER MOUNTING DEVICE. It would be potentially confusing if someone who watched this video, now out in the field, comes across this scenario and then decideds to put in a screw based on what you said, which might be wrong. Leave the bonding screw in, if the N in the meter mounting device is NOT isolated.
@raecross8872
4 жыл бұрын
In Canada only point of entry neutral is bonded to ground...all others removed after that point!
@jfarinacci0329
4 жыл бұрын
Good explanations. Thank you.
@invishand3
4 жыл бұрын
I have a 1950s 4plex w main shut off, 4 cut off boxes under service, & subpanels yards away in each apt's kitchnen... I am replacing pushamatic subpanels which only have 3 wires (neutral/2phases) in subpanels and uses METAL Conduit. Do I rely on the metal conduit to create the ground bar connection with the ground poles/original supply neutral in the meter room? That is my guess... ( so electrical current returns thru neutral wire to grounds in electrical room instead of conduit). If anyone gets this and replies, THANKS IN ADVANCE! Looking thru comments now in case already answered...
@O.Bey7Podcast
Жыл бұрын
Hello Benjamin...I recently installed a 100 amp panel with 30 spaces. I was able to connect my wall heater which is a 20/20 double post, my electric water heater which is a 30/30 double post and a Dr. Infrared heater which is a 40/40 double post. I had my refrigerator and security cameras also connected which is a 15 & 20 breaker. When I updated the electric socket outlet I am now just get a flickering light from only the new installed electric socket outlets. The heaters and electric water heater are working well but cannot seem to find why is the electric socket outlets now working? Any info or suggestions?
@bebopalooblog2877
3 жыл бұрын
Hey Ben, I think maybe you should pin something to make it clear that you only remove the screw if you're sharing the ground from the main. There are some installations which allow for an independent ground, in which case I believe you must bond the neutral if you want your breakers to trip on a short to ground. I believe the Ontario Electrical Code allowed for both types of installation, though only the shared-main ground was permitted for livestock operations. I heard a rumor that was to change - but I just watched KZitem Guy so-and-so install a subpanel with and independent ground in his workshop/garage. Licensed electrician at that - though not currently working in domestic wiring. It wouldn't do to have people un-bonding such installations. Of course it also wouldn't do to go with an independent and bonded ground if your remote ground rods are too close to the main ground either. The magic pixies will find a way to tunnel through that in the first rainstorm - which is why it's not permitted for livestock operations I imagine.
@ralphcrawford9741
2 жыл бұрын
Sorry, the above paragraph is dangerous and should be ignored. There is "never" an "independent ground." Bebopalooblog is referring to an ISOLATED ground. It runs directly from the grounded device or location to the main grounding point at the "service location," (a term from the National Electrical Code in the USA, usually where the meter is located) and the only place where you should find a green panel bonding screw whose purpose is to connect the metal enclosure to the "Grounding" system which otherwise has the capacity at every location to carry enough current to trip the breaker or fuse in case of a short to ground. The "Grounding" system by design (normally) only carries current during a short to "ground." In contrast, the "Grounded Neutral System," (or "Grounded Conductor" as opposed to the [green or bare or green/yellow] "Grounding Conductor"), generally the white wires in the USA, by design always carries all the return current from the "Hot" wire. (Note: If ALL the current from the hot isn't "found" in the neutral, the GFCI breaker will disconnect - a ground wire is not factored into its operation.) NEVER create a safety or isolated "ground" for an electrical power system by connecting ONLY to a ground rod. The NEC specifically forbids this "use of the earth as a conductor" since the earth's conductivity can be as high as 1,000,000 ohms and cannot be relied upon to carry enough current to trip a breaker or fuse. The main purpose of the ground rod is to assure that any voltage difference between the earth and any nearby accidentally electrified exposed metal that could be contacted by a person or an animal stays low enough to remain safe. It is OK to connect (or bond) an extra "Supplemental Ground Rod" to any point in the building or site "grounding system." Yet, some electronic systems, devices and appliances internally connect capacitors, for example, from line and neutral wires to their ground wire to "drain off" voltage spikes and high-frequency noise and these connections inject a small amount of current into the "Grounding System" that can introduce electrical interference in other sensitive electronic devices. In a hospital's "critically sensitive patient area" these small currents can be lethal. A properly sized "ISOLATED" GROUND is installed directly from the sensitive device or area to the "service entrance grounding point" to assure that it shares none of these extraneous currents yet can still carry any short circuit current needed to trip the appropriate breaker.
@abrahamvaro1637
5 жыл бұрын
Allways ,you make good videos ,thanks.
@tedlahm5740
5 жыл бұрын
As correctly stated, the bonding screw bonds the neutral bus and the grounding bar.
@kengartner204
4 жыл бұрын
What is meant by Benjamin's final comment to take the green bonding screw out of secondary panels and "chuck it in the grove"? Is that the same as 'toss it in the garbage' or is it some subtle electrician lingo?
@BenjaminSahlstrom
4 жыл бұрын
Hey Ken! Here in Southwest Minnesota everyone has a "grove" which is defined like this: grove /ɡrōv/ noun a small wood, orchard, or group of trees. So yes, it basically means that you should discard the bonding screw so that it will not be accidentally reinstalled. Sorry if it was a bit confusing! Also, thank you for being a subscriber!!!
@jolyonwelsh9834
4 жыл бұрын
I like to save the green bonding screw. They're painted green and if a main breaker panel is missing one and needs one, I will have one that might fit.
@CNHInspections-CentralNebraska
7 ай бұрын
But what if I have a 3 wire feed to my sub panel? Do I still separate the neutral in the ground?
@airmanfloyd719
3 жыл бұрын
I thought there would be a neutral and a ground bus. Two different buses but connected? And why is it bonded to the casing like receptacles are bonded to metal boxes?
@sonoferin54
4 жыл бұрын
if the meter is in and the disconnect is turned off is the neutral leg live or dead..we have been told to put a neutral bonding screw in and wondered if it can be done without pulling the meter again
Пікірлер: 385