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a circuit conductor that normally carries current, and is connected to ground (earth) at the main electrical panel.

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Below is the picture of the main MCB in the distribution board of the house. The incoming wire from the pole is of aluminium. There is some white powdery substance on the neutral wire. I got to know ...
Awais Saeed's user avatar
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I keep seeing the same answer everywhere: "it's to complete the circuit and it also serves as a return path for current," but I have two problems with this: Why is it necessary to complete ...
Salvador's user avatar
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I need to understand from electrical theory why a neutral will rise in voltage on a single phase transformer when the neutral is not earthed and , not a centre tapped trf just a trf with a live and ...
N B's user avatar
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I’ve read it many times that current requires a closed path in order to flow in circuits but how come electricity flowing from live wires can be sinked into the earth? In order to have a closed path ...
CaptDeaDpooL's user avatar
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If AC is alternating the current between phase and neutral then why we don't get shock by touching neutral wire?
Xavier's user avatar
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In an earlier post, I asked for a circuit design that would keep the coax shield from becoming the neutral back to the transformer in the case of a broken power company neutral. There were some great ...
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I am someone who has little knowledge about electricity, but I have something I am curious about. I could not find the answer by searching on the internet. If the electric current comes from the phase ...
Ahmet's user avatar
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A 240v line runs to a house from an autotransformer operated by the power company, and a coax cable makes the same run. At the pole the coax shield is connected to the floating ground of the ...
rmcdow24's user avatar
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I apologize for the basic question, but I just bought a transformer with the following specifications. On the input side, there are two black wires and two red wires. Here is a photo. And here the ...
Zlmanuel87's user avatar
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Please refer to the following drowing: Imagine from utility to the electrical outlet we receive line, neutral and earth as shown above in Figure 1. This is connected to a device such as a power ...
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I'm trying to build a AC “power bar” with metering per “outlet”. The 2 most interesting chips I found are the Microchip MCP39F521 and the Allegro ACS37800. Due to costs, I've chosen the former. The ...
Joshua T's user avatar
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I'm trying to understand the behavior of current in the neutral wire of a wye (Y) transformer secondary (EU residential wiring). Specifically, I'm curious about the following points: Does the current ...
A R's user avatar
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https://www.youtube.com/watch?v=G8JgS-STozA&t=537s First, I apologize this video is in a different language, but I'll point out what is relevant. So, in this video. There is a man saying that his ...
Nhit C's user avatar
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Here are the two wiring diagram.
Nhit C's user avatar
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Single phase transformer serving 3 houses: I am not sure if this correct. Can someone confirm?
Nhit C's user avatar
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I am very new to electronics and electrical design, so please be nice. This is probably a dumb question to people more knowledgeable than me in the subject, but I'm just wanting/trying to learn. I've ...
Yourtakingmylife's user avatar
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Connecting some thicker gauge cable to my trailer to ground neutral for the 12v DC system. The current 8AWG wire uses a receptacle style lug where the wires are inserted and the that receptacle is ...
jhickok's user avatar
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Consider a normal 3 phase motor with star/delta, focusing on the star wiring here... what would theoretically happen if I placed a neutral wire from the star connection contactor, to the electrical ...
llVIU's user avatar
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So we have this electrical control panel in which we have a 24v dc and a 24v ac circuit both. The 24v ac is coming out of a 400/24v transformer. The transformer primary is being fed from a 3-phase ...
Aamir Awan's user avatar
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Yeah, I know, it is such an old question, so many discussions on this topic, but I cannot realy find an exact answer in the Internet. I live in Ukraine, where we have 230V AC outlets, as in most ...
Gog's user avatar
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I'm exploring the capabilities of my cheap Aneng SZ08 multimiter, which I've recently purchased. I have a question related to the detection of a neutral line in the wall socket using a multimiter. ...
Gog's user avatar
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How does neutral grounding resistor in power generation side, see and link up with grounding fault at the secondary side of a transformer?
Natnael Goitom's user avatar
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We have a 5 KVA Diesel Genset with a 220V AC Output. Also, we have a single phase 220V AC Mains Supply. The genset is connected to a dedicated ground pit with a 10 mm Cable. We have checked the ground ...
Srijit B's user avatar
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From the hardware store I bought a NEMA 14-30 power cord, to which connected a NEMA 5-15 receptacle so I can plug in a 240V appliance. https://www.amazon.ca/AC-WORKS-Generator-250Volt-Flexible/dp/...
Tempus Nomen's user avatar
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I have heard that transformer connects to house only via phase(s) - neutral from house is actually grounded, as well as transformers and they connect via earth. Is this true? What is resistance of ...
Ri Di's user avatar
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Story time: Last week my furnace failed. The blower motor run capacitor went toast, so the motor wouldn't spin. The furnace is on a multi-wire branch circuit and shares its neutral with the basement. ...
Thomas's user avatar
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1 answer
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I have a small motor controller test board setup like the diagram below: A few loads such as a motor controller, and some switches are connected to the live and neutral terminal blocks for power. ...
blueturkey's user avatar
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As the title asks, is that possible? By "easy access" I mean through some connection I can find inside my home, rather than burying my own grounding electrode and running wires from it to ...
Outis Nemo's user avatar
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Is it good engineering practice to share two different 24 VDC SMPS's neutral wires? I work in manufacturing with Toshiba extrusion machines which are controlled by PLCs. Our management wants to add a ...
Paul's user avatar
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4 answers
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I have a three-phase supply voltage, between them is 415 V. Can I connect a 415/230 V step-down transformer between any two phases and use the output of the transformer as phase and neutral? Or ...
Jishnu Prakash Nambiar K K's user avatar
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1 answer
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I have two inverters. Inverter A is producing 220 V, 50 Hz while inverter B is producing 110 V, 60 Hz. Can they share a neutral on the output?
El Jefe's user avatar
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I recently installed a solar inverter in my house and learned that earth must be connected to neutral. I am very puzzled by this, since AC changes direction of current flow, so according to me, there ...
Philip's user avatar
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2 answers
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I have an offgrid inverter/charger - an MPPSolar PIP4048MS (4000W inverter, 48V system). By and large it has worked well for 7 years. Recently I bought an MPPSolar PIP5048MS (5000W inverter, 48V ...
user1273784's user avatar
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I know this is a bad idea, but that does't mean I don't want to try it. Powerline networking is a thing. It could well be they do this in the way I'm considering, but I'd imagine they probably ...
ScottishTapWater's user avatar
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We have a high-current industrial machine rated for 3-phase at 230 V; the nameplate literally says "PHASES: 3Ph + PE", "VOLTAGE: 3X230VAC", and "FULL LOAD: 92A". There ...
bernz's user avatar
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I own an old SONY radio / amplifier, model STR-7800SD. I opened it and I saw a resistor between one of the AC lines and the chassis. The funny thing is that it has a REVERSIBLE 2-prong plug! So, I ...
SimplyTech's user avatar
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1 answer
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Morning All, my first post here! I am looking at 3 phase calculations and how to find the current in the neutral for an unbalanced 3 phase system. I am aware that it can be drawn out to find the ...
Terry70's user avatar
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4 answers
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Long story short, I did a bit of a career change, I'm now doing electrical engineering with an architecture firm instead of embedded systems. So I've jumped from the simple world of DC to the land of ...
audiFanatic's user avatar
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1 answer
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Multiple types of domestic power sockets around the world (including the ones in my country) do not distinguish between live and neutral even when ground is present. I am shopping for an AC-DC PSU ...
DarioP's user avatar
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2 answers
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In a three phase system, we use a vector sum to calculate resulting neutral current. I don't understand why we use vector sum. The resulting neutral current is actually the sum of instantaneous values ...
user299763's user avatar
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10 votes
10 answers
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As far as I can understand the concept of AC, it does not matter which wire is live or neutral as this changes like 100 times per second (implying 50Hz) I believe. I read the fuse must be connected to ...
Musa's user avatar
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1 vote
1 answer
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I want to control some WS2811 lights with a Raspberry Pi. The lights need 24V ~180W ~8A from a supply such as this, whereas the Pi wants 5V and presumably low power from a supply such as USB. I ...
spraff's user avatar
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-1 votes
1 answer
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I’m running a film project that involves a huge LED wall. I have 1000 screens that can pull .6 A each. They are balanced for load on a 400 A 3 phase supply but I’m measuring the same current in the ...
James S 's user avatar
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1 vote
1 answer
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I'm going to power a 235 V band heater with a computer power cable (has fuse, SSR and thermocouple, too.) Everything is enclosed within a box, and there are no open junctions etc. I am unsure what to ...
Kemkoooo0's user avatar
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3 votes
2 answers
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In LTSpice, measuring a current through passive elements (components) is very straightforward. Now I'd like to measure a current through a neutral wire where no element is connected to it. So can ...
Ady's user avatar
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I keep seeing that the space vector generation (as a part of a FOC) is generated around DC Link / 2. What effects would be expected if the (in this case isolated) star point were permanently shifted? ...
ben5en's user avatar
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Of course we are not talking about code or best practice, but hypothetically if someone wanted to do some welding a few hundred meter from the closed power point could he/she run one hot conductor to ...
chris alyui's user avatar
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1 answer
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I was reviewing an energy meter specification and I came across neutral current measurement. What is the importance of neutral current measurement in an energy meter for three phase power supply? I ...
miky-1's user avatar
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1 vote
1 answer
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Okay so this is a two part question. First Question is probably more of an ELI5 question. But I am a fairly experienced electrician (NOT AN ENGINEER mind you.) but I have a generally good working ...
ElectricianPat's user avatar
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0 answers
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I was thinking of buying a Residual current device but I don't know if the power supply to my home is grounded properly or not. For initial testing I used my multimeter to check the voltage coming to ...
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