Single Phase Electricity Explained - wiring diagram energy meter
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Date: 2023-11-17
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Comments and reviews: 26
Craig
Looking for some advice, I have 3 appliances each allegedly consuming 3050 at maximum capacity, but the wires and my main feed to the consumer unit is getting so hot. I deliberately upgraded my consumer unit so it could handle these appliances. I installed the outlet (Specifically for these appliances) using Prysmian 10mm2 twin and earth, wired to a 50-amp breaker, then installed ANOTHER Prysmian 10mm2 twin and earth, wired to a another 50-amp breaker so there are now 2, one for two lower end of the consumer unit and the other for the higher end. Furthermore, I also have two BG 80A 30mA 2 Residual current device (RCD) installed on the consumer unit and the main feed that powers the consumer unit has a fuse of 100amps.
These appliances are in a container where I linked each outlet to one another so they can draw power from the first one (again, each has its own 50-amp breaker at the opposing side of the consumer unit, one for the upper side and one for the lower side, not sure if that is causing resistance as I even have the powercables with 13amp fuses to power those appliances, but since there is a 50amp breaker for each outlet, Im still confused.
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Looking for some advice, I have 3 appliances each allegedly consuming 3050 at maximum capacity, but the wires and my main feed to the consumer unit is getting so hot. I deliberately upgraded my consumer unit so it could handle these appliances. I installed the outlet (Specifically for these appliances) using Prysmian 10mm2 twin and earth, wired to a 50-amp breaker, then installed ANOTHER Prysmian 10mm2 twin and earth, wired to a another 50-amp breaker so there are now 2, one for two lower end of the consumer unit and the other for the higher end. Furthermore, I also have two BG 80A 30mA 2 Residual current device (RCD) installed on the consumer unit and the main feed that powers the consumer unit has a fuse of 100amps.
These appliances are in a container where I linked each outlet to one another so they can draw power from the first one (again, each has its own 50-amp breaker at the opposing side of the consumer unit, one for the upper side and one for the lower side, not sure if that is causing resistance as I even have the powercables with 13amp fuses to power those appliances, but since there is a 50amp breaker for each outlet, Im still confused.
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Hope4Today9
If you compare the circuit shown at 6: 00 with the the circuit shown at 6: 26 you will find the he has power going in the bottom of the device and out the top. In and the next illustration he has this reversed with power going in the top and out the bottom.
The correct way to wire the circuit breaker is to connect the incoming power to the stationary part of the breaker and the load on the side which moves.
Now in the US the entry would be at the top of the breaker with the lettering right side up. How these breakers (he's showing) are made? idk
Apparently In the UK they may not be concerned about the arc flash.
A quick comparison in the UK they have a little over 20, 000 Residential Electrical Fires. while in the US we have about 24, 200 per year.
There are (ballpark) 24, 000, 000 home in the UK and about 140, 000, 000 homes in the US. nearly six times as many house holds (in the US.
So percentage wise 0. 08% of homes will have an electrical fire in the UK.
In the USA it's 0. 01%. WOW eight times more likely to have a electrical house fire in the UK.
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If you compare the circuit shown at 6: 00 with the the circuit shown at 6: 26 you will find the he has power going in the bottom of the device and out the top. In and the next illustration he has this reversed with power going in the top and out the bottom.
The correct way to wire the circuit breaker is to connect the incoming power to the stationary part of the breaker and the load on the side which moves.
Now in the US the entry would be at the top of the breaker with the lettering right side up. How these breakers (he's showing) are made? idk
Apparently In the UK they may not be concerned about the arc flash.
A quick comparison in the UK they have a little over 20, 000 Residential Electrical Fires. while in the US we have about 24, 200 per year.
There are (ballpark) 24, 000, 000 home in the UK and about 140, 000, 000 homes in the US. nearly six times as many house holds (in the US.
So percentage wise 0. 08% of homes will have an electrical fire in the UK.
In the USA it's 0. 01%. WOW eight times more likely to have a electrical house fire in the UK.
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Streptococcus
In my home single phase it like this but minimal difference
1 the earth or ground wire was connected the neutral wire before connected main breaker and it connected to ground rod
2 the RCD I used total 8 RCDs
one is for main breaker that cut all whole systems
five is for air conditioning and gate that cut only line wire for each fault
two is for water heater that cut line and neutral for each fault
3 the meter doesn't have any fuse
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In my home single phase it like this but minimal difference
1 the earth or ground wire was connected the neutral wire before connected main breaker and it connected to ground rod
2 the RCD I used total 8 RCDs
one is for main breaker that cut all whole systems
five is for air conditioning and gate that cut only line wire for each fault
two is for water heater that cut line and neutral for each fault
3 the meter doesn't have any fuse
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Justin
Is it me, or did your diagram not show the appliance earthing cable connecting back to the neutral block in the distribution board? I heard you say it, but could not see it depicted. I think that is needed to allow an MCB on the circuit to trip in the case of a ground fault (say, where the phase wire touches a metal casing of an appliance, but looks like it may not be needed with an RCD? Otherwise super-clear explanation, thanks!
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Is it me, or did your diagram not show the appliance earthing cable connecting back to the neutral block in the distribution board? I heard you say it, but could not see it depicted. I think that is needed to allow an MCB on the circuit to trip in the case of a ground fault (say, where the phase wire touches a metal casing of an appliance, but looks like it may not be needed with an RCD? Otherwise super-clear explanation, thanks!
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Wendy
You will probably think I'm silly asking this. My husband used to be an electrical engineer until he retired some 20 years ago. Unfortunately he has developed dementia and I want to know a few basic things about electricity. He can't remember the colours of a plug or how to use a multimeter. He can't remember Ohms Law which I believe is a basic thing. Do you think this site would help me (and him) to so I can ask him questions?
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You will probably think I'm silly asking this. My husband used to be an electrical engineer until he retired some 20 years ago. Unfortunately he has developed dementia and I want to know a few basic things about electricity. He can't remember the colours of a plug or how to use a multimeter. He can't remember Ohms Law which I believe is a basic thing. Do you think this site would help me (and him) to so I can ask him questions?
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kcpkcp1000
Thank you for the video. In Malaysia here most of our MCBs are designed to have the incoming section on the top and the outgoing section on the bottom. The incoming section is usually labelled 1, 3 or 5 while the outgoing section is label 2, 4 or 6. The new rule also requires each instant water heater (usually installed in shower room) to have its own RCD with a sensitivity of 10mA.
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Thank you for the video. In Malaysia here most of our MCBs are designed to have the incoming section on the top and the outgoing section on the bottom. The incoming section is usually labelled 1, 3 or 5 while the outgoing section is label 2, 4 or 6. The new rule also requires each instant water heater (usually installed in shower room) to have its own RCD with a sensitivity of 10mA.
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2K
Sir, one question that troubles a lot of people, if current alternates why do we distinguish the 2 cables (for a single phase ) as hot wire and neutral. if it alternates then shouldn't for the first half cycle the brown wire (L) to be the hot one and blue wire (N) to be the neutral and for the second half cycle the brown wire to be the neutral one and blue wire to be the hot one?
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Sir, one question that troubles a lot of people, if current alternates why do we distinguish the 2 cables (for a single phase ) as hot wire and neutral. if it alternates then shouldn't for the first half cycle the brown wire (L) to be the hot one and blue wire (N) to be the neutral and for the second half cycle the brown wire to be the neutral one and blue wire to be the hot one?
reply
2K
Sir, one question that troubles a lot of people, if current alternates why do we distinguish the 2 cables (for a single phase ) as hot wire and neutral. if it alternates then shouldn't for the first half cycle the brown wire (L) to be the hot one and blue wire (N) to be the neutral and for the second half cycle the brown wire to be the neutral one and blue wire to be the hot one?
reply
Sir, one question that troubles a lot of people, if current alternates why do we distinguish the 2 cables (for a single phase ) as hot wire and neutral. if it alternates then shouldn't for the first half cycle the brown wire (L) to be the hot one and blue wire (N) to be the neutral and for the second half cycle the brown wire to be the neutral one and blue wire to be the hot one?
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PageSparx
Your videos are super educational, Thank you! I'm going to throw you a crazy question. Say I relocate my family to England from the US but I want to use some or even all of my old US appliances. Is there a way to use both European and US based appliances without having a transformer at every outlet. Can this be achieved at the breaker box?
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Your videos are super educational, Thank you! I'm going to throw you a crazy question. Say I relocate my family to England from the US but I want to use some or even all of my old US appliances. Is there a way to use both European and US based appliances without having a transformer at every outlet. Can this be achieved at the breaker box?
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Oldhogleg
European style outlet boxes for lighting, receptacles, and switches are better designes than used here in the US with the use of terminal blocks; makes our system look like an archaic throwback. But the European circuit breaker distribution panels are rather archaic by US standards, resembling something from the 1940's-50's at best.
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European style outlet boxes for lighting, receptacles, and switches are better designes than used here in the US with the use of terminal blocks; makes our system look like an archaic throwback. But the European circuit breaker distribution panels are rather archaic by US standards, resembling something from the 1940's-50's at best.
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Nirmal
How current will flow back to the transformer in last case where there is no direct connection between ground and neutral? Connecting the ground wire to ground rod will create high resistive path to Transformer which will allow very small amount of current to flow back but not trip the breaker.
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How current will flow back to the transformer in last case where there is no direct connection between ground and neutral? Connecting the ground wire to ground rod will create high resistive path to Transformer which will allow very small amount of current to flow back but not trip the breaker.
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Enrico
I am confused. if each appliance is a representation of a recistance in the houses cuircut, why does adding more appliances increase the current, instead of decreaning it? For example, if we take a simple circuit with a fixed battery, the more bulbs we add the dimmer the light becomes.
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I am confused. if each appliance is a representation of a recistance in the houses cuircut, why does adding more appliances increase the current, instead of decreaning it? For example, if we take a simple circuit with a fixed battery, the more bulbs we add the dimmer the light becomes.
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Inglese29
So the neutral effectively acts as a ground line, completing the circuit and allowing electricity to flow while the earth line is there purely as a safety precaution.
Is that correct?
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So the neutral effectively acts as a ground line, completing the circuit and allowing electricity to flow while the earth line is there purely as a safety precaution.
Is that correct?
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Chai
EngineeringMindset Thanks for the video made. I have a question about solar systems in residential homes. Would it be connected to the main switch? Would you have a picture of the diagram?
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EngineeringMindset Thanks for the video made. I have a question about solar systems in residential homes. Would it be connected to the main switch? Would you have a picture of the diagram?
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WeAreTheD
Is there another bus bar (neutral) linking the RCD and the individual circuit breakers in this video? Could you clarify? I have seen some people use two bus bars (neutral & live.
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Is there another bus bar (neutral) linking the RCD and the individual circuit breakers in this video? Could you clarify? I have seen some people use two bus bars (neutral & live.
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no112358
MCBs don't protect themselves, they protect the cables, so they don't melt, that's why its important to get the right Amp MCB for the mm2 wires you have in the walls.
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MCBs don't protect themselves, they protect the cables, so they don't melt, that's why its important to get the right Amp MCB for the mm2 wires you have in the walls.
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Trustnuffin
So is the neutral basically a return for the phase and if so where does this neutral electricity end up? Are we giving a percentage back to the system for free?
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So is the neutral basically a return for the phase and if so where does this neutral electricity end up? Are we giving a percentage back to the system for free?
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Matt
If electricity is distributed in 3 phases and only one property can use one of these 3 phases? therefore only 3 house per one transformer? Could someone explained it?
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If electricity is distributed in 3 phases and only one property can use one of these 3 phases? therefore only 3 house per one transformer? Could someone explained it?
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Dyriten
I studied in electronics and now that im done with that i might go back to school to be an electrician aswell, This is so much simpler than electronics
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I studied in electronics and now that im done with that i might go back to school to be an electrician aswell, This is so much simpler than electronics
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Nur
1. can the RCD be eliminated and the system still work? So just the MCBs in this case
2. Can the MCB's be eliminated and just use the RCD's?
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1. can the RCD be eliminated and the system still work? So just the MCBs in this case
2. Can the MCB's be eliminated and just use the RCD's?
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Felipe
Very interesting, I'm amazed at how similar it is to the setup we use here in Brazil, even though we mostly use 110/127 volts circuitry.
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Very interesting, I'm amazed at how similar it is to the setup we use here in Brazil, even though we mostly use 110/127 volts circuitry.
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Tom
7: 23 is that's supposed to be like that's the neutral is connected from the RCD to the first MCB well looks like it is
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7: 23 is that's supposed to be like that's the neutral is connected from the RCD to the first MCB well looks like it is
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gladiator
When does a Human Electrical Shock occur? : When a guy is grounded or when he becomes part of the circuit
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When does a Human Electrical Shock occur? : When a guy is grounded or when he becomes part of the circuit
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Andrew
Electricity can be dangerous - you should be qualified or desperate to carry out any electrical work.
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Electricity can be dangerous - you should be qualified or desperate to carry out any electrical work.
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Maleesha
Home electricity circuit was rocket science for me. This video is super helpful for me to understand it
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Home electricity circuit was rocket science for me. This video is super helpful for me to understand it
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Popandu
The Engineering Mindset Great video guys. Surely you mean armoured sheath and not armoured sheaf?
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The Engineering Mindset Great video guys. Surely you mean armoured sheath and not armoured sheaf?
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