Main electrical panel explained - Load center - service panel
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Date: 2023-11-17
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Comments and reviews: 29
Mark
These videos have somehow achieved an unmatched level of informational digestibility.
I say somehow because Ive seen the same topics explained in what I thought was a similar manner, yet have never been able to comprehend & understand the presented information as efficiently as Ive been able to with these. For example, I dont think Ive ever seen such a quick & simple, yet understandable explanation of the 120/240v relationship regarding the transforms center-tap & the connected common rail. Clear & simple gold.
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These videos have somehow achieved an unmatched level of informational digestibility.
I say somehow because Ive seen the same topics explained in what I thought was a similar manner, yet have never been able to comprehend & understand the presented information as efficiently as Ive been able to with these. For example, I dont think Ive ever seen such a quick & simple, yet understandable explanation of the 120/240v relationship regarding the transforms center-tap & the connected common rail. Clear & simple gold.
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Irwan
I'm from Malaysia and we used UK-base electrical system. When I start watching this video, I was confuse why there are 2 live (hot) incoming, I though one is live, one is neutrals as they are oscillating the current flow, but then suddenly the neutral come in into the picture. WAIT. What? Ohhhh, US have different transmission system! Got it. We have 3 lives incoming supply too for bigger house but we always see that the neutral wire is the one completing the transmission circuit, i. e, for current oscillating.
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I'm from Malaysia and we used UK-base electrical system. When I start watching this video, I was confuse why there are 2 live (hot) incoming, I though one is live, one is neutrals as they are oscillating the current flow, but then suddenly the neutral come in into the picture. WAIT. What? Ohhhh, US have different transmission system! Got it. We have 3 lives incoming supply too for bigger house but we always see that the neutral wire is the one completing the transmission circuit, i. e, for current oscillating.
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Matthew
Thanks for the great explanation.
So for the last point made do I have this right?
Say we have a house that was plumbed with copper pipe. Then some years later a renovation was done which replaced some of the copper runs with PEX.
If the 2nd floor still had all copper pipes within it's walls, but it was being fed from the basement using PEX, then technically those copper pipes on the 2nd floor could be energized if an electrical wire made contact with them.
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Thanks for the great explanation.
So for the last point made do I have this right?
Say we have a house that was plumbed with copper pipe. Then some years later a renovation was done which replaced some of the copper runs with PEX.
If the 2nd floor still had all copper pipes within it's walls, but it was being fed from the basement using PEX, then technically those copper pipes on the 2nd floor could be energized if an electrical wire made contact with them.
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Rakesh
1. While reviewing data, you notice the following reading:
Voltage = 122V
Current = 12A
Power Factor = -. 99
Phase Angle = 176. 66
What are your observations? Does the data look acceptable?
What question do you have? Would additional information help you?
If you have determined the data is inaccurate, what are some causes, and what could resolve it?
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1. While reviewing data, you notice the following reading:
Voltage = 122V
Current = 12A
Power Factor = -. 99
Phase Angle = 176. 66
What are your observations? Does the data look acceptable?
What question do you have? Would additional information help you?
If you have determined the data is inaccurate, what are some causes, and what could resolve it?
reply
David
i want to replace my main 100amp breaker inside my load panel with a 200amp breaker and add a new circuit with a 50 amp 240volt breaker for my welder my question is how can i shut the power off to the main breaker to safeley replace the main breaker is there another main inside the meter upstream? and is it legal or okay to shut the meter off inside the meter box?
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i want to replace my main 100amp breaker inside my load panel with a 200amp breaker and add a new circuit with a 50 amp 240volt breaker for my welder my question is how can i shut the power off to the main breaker to safeley replace the main breaker is there another main inside the meter upstream? and is it legal or okay to shut the meter off inside the meter box?
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Adam
Great video, but I do have one question that boggles my mind. Is there a good reason that there is no gfci or afci for 240v circuit, even on outdoor or wet environment use? As far as I understand, not only code does not require it, but no stores are even selling one. 240v is far more dangerous than 120v, correct?
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Great video, but I do have one question that boggles my mind. Is there a good reason that there is no gfci or afci for 240v circuit, even on outdoor or wet environment use? As far as I understand, not only code does not require it, but no stores are even selling one. 240v is far more dangerous than 120v, correct?
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Kyle
My neutral and ground bus bars aren't bonded in my breaker box. I think they are by the meter though. My stove wire only has 3 wires, black - white - bare. They are thicc. Does the bare wire connect to my ground bus bar or my neutral? How does the clock work on it with no neutral/120v?
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My neutral and ground bus bars aren't bonded in my breaker box. I think they are by the meter though. My stove wire only has 3 wires, black - white - bare. They are thicc. Does the bare wire connect to my ground bus bar or my neutral? How does the clock work on it with no neutral/120v?
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Allan
I was trying to get a light to work in the laundry room and accidentally shorted power to the box from the switch. It threw a breaker for the garage door. The switch for the light still had power. Can shorting to the switch box cause another breaker to trip through the ground?
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I was trying to get a light to work in the laundry room and accidentally shorted power to the box from the switch. It threw a breaker for the garage door. The switch for the light still had power. Can shorting to the switch box cause another breaker to trip through the ground?
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John
Question: If nothing in the house is on, completely empty, nothing plugged in, no lights on, water heater off, ac off, etc. Nothing is using electricity. All breakers on, except hot water and ac. Does the meter spin/Is power being used? Just off of the resistance of the wires?
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Question: If nothing in the house is on, completely empty, nothing plugged in, no lights on, water heater off, ac off, etc. Nothing is using electricity. All breakers on, except hot water and ac. Does the meter spin/Is power being used? Just off of the resistance of the wires?
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Scott
I work with a lot of electronic circuits over the years as a field engineer on medical devices, but I never delved into electrical for housing. This was extremely interesting and pretty simple when you get right down to it. Great video.
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I work with a lot of electronic circuits over the years as a field engineer on medical devices, but I never delved into electrical for housing. This was extremely interesting and pretty simple when you get right down to it. Great video.
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Karan
Thank you so much for what you do! I'm learning so much about the trades now thanks to your videos. I took these classes in school and never understood a thing. You're doing a great service to tradesmen and others alike.
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Thank you so much for what you do! I'm learning so much about the trades now thanks to your videos. I took these classes in school and never understood a thing. You're doing a great service to tradesmen and others alike.
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deminybs
I always wondered why the electricians hooked to our copper entrance line, nowadays though we come into the house with poly instead of copper so now they connect to an exposed piece of rebar in the basement somewhere
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I always wondered why the electricians hooked to our copper entrance line, nowadays though we come into the house with poly instead of copper so now they connect to an exposed piece of rebar in the basement somewhere
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Bryan
The power supply shown is line to line 240v, in the lighting part the power supply from 1 circuit breaker and 1 line from the neutral bar, its 120v as mentioned earlier. so lighting fixtures should be rated at 120v.
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The power supply shown is line to line 240v, in the lighting part the power supply from 1 circuit breaker and 1 line from the neutral bar, its 120v as mentioned earlier. so lighting fixtures should be rated at 120v.
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Ed
To all of you want to be electricians. Do yourself a favor and leave the panel work to pros. change outlets and switches if you dare, more citizens are killed in the home effing with electricity than any other reason.
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To all of you want to be electricians. Do yourself a favor and leave the panel work to pros. change outlets and switches if you dare, more citizens are killed in the home effing with electricity than any other reason.
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Jay
Great video. I am in my first year of apprenticeship and have been taught how to do things but not how it functions. If anyone has any nec codes they can send my way that i should be studying i would appreciate it.
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Great video. I am in my first year of apprenticeship and have been taught how to do things but not how it functions. If anyone has any nec codes they can send my way that i should be studying i would appreciate it.
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Aries
Im going to turn off the big breaker open up the panel to see if the bathroom is actually grounded or is it a false ground(there is three wires and the third wire isnt bridging the Gap between neutral and ground)
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Im going to turn off the big breaker open up the panel to see if the bathroom is actually grounded or is it a false ground(there is three wires and the third wire isnt bridging the Gap between neutral and ground)
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Ishan
Really good video, but it is the same exact video from 4 years ago 120V 240V Electricity explained - Split phase 3 wire electrician. I just wanted to make sure I wasn't missing anything. Thank you though!
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Really good video, but it is the same exact video from 4 years ago 120V 240V Electricity explained - Split phase 3 wire electrician. I just wanted to make sure I wasn't missing anything. Thank you though!
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Dakota
im currently an apprentice for a commercial electrical company and i have always struggled to understand whats actually going on in these panels. I took notes from this video and it really helped me
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im currently an apprentice for a commercial electrical company and i have always struggled to understand whats actually going on in these panels. I took notes from this video and it really helped me
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IamHootch
I work as an electrical wholesaler and love videos like this as I'm really just a salesman and this helps me understand what the heck my customers are talking about. thank you!
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I work as an electrical wholesaler and love videos like this as I'm really just a salesman and this helps me understand what the heck my customers are talking about. thank you!
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ghost
can anyone tell me why my panel only has 1 bus bar and no ground wire coming from the electrical companies end? however the ground wire from my bus bar goes into the ground
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can anyone tell me why my panel only has 1 bus bar and no ground wire coming from the electrical companies end? however the ground wire from my bus bar goes into the ground
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WISEGUY
I'd like to request a video explaining portable generators for residential temporary back up power. Does neutral have potential to back feed utility power lines? Thanks
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I'd like to request a video explaining portable generators for residential temporary back up power. Does neutral have potential to back feed utility power lines? Thanks
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Wayne
Excellent info and much needed. Thanks for taking the time and sharing the knowledge with us on this much needed subject matter. It is very much needed and appreciated.
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Excellent info and much needed. Thanks for taking the time and sharing the knowledge with us on this much needed subject matter. It is very much needed and appreciated.
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Adam
Can you please make a video that explains the differences between the US and the UK electrical systems like you did here in this video as a side-by-side comparison?
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Can you please make a video that explains the differences between the US and the UK electrical systems like you did here in this video as a side-by-side comparison?
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Sam
Could you please explain how AC work in RVs & Boats? Are neutral and ground bonded? If not where does electrical current flow if the source was onboard generator?
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Could you please explain how AC work in RVs & Boats? Are neutral and ground bonded? If not where does electrical current flow if the source was onboard generator?
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Fatfett
Great content. Do you have a sub panel video yet? Curious to see the differences and explanation for why the ground and neutral must be separate.
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Great content. Do you have a sub panel video yet? Curious to see the differences and explanation for why the ground and neutral must be separate.
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education
This is one of the best 'learning' videos that I have ever seen. It cleared up some of the things I was confused about inside the breaker box.
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This is one of the best 'learning' videos that I have ever seen. It cleared up some of the things I was confused about inside the breaker box.
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Samuel
I am a bit confused by the role of the grounding bus bar shown in the schematic. Can the ground wire connect to that bar instead of the neutral?
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I am a bit confused by the role of the grounding bus bar shown in the schematic. Can the ground wire connect to that bar instead of the neutral?
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Samir
Now I realized why India has 240 V residential and Western countries have 120V residential. In India we only use 1 hot 1 neutral from the meter.
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Now I realized why India has 240 V residential and Western countries have 120V residential. In India we only use 1 hot 1 neutral from the meter.
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XO
Love going into random building and finding electrical panels bonded to natural gas lines.
A+ for safety effort.
F for achieved safety.
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Love going into random building and finding electrical panels bonded to natural gas lines.
A+ for safety effort.
F for achieved safety.
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