Questions tagged [earth]
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Why don't we use neutral wire for to ground devices and earth wire for closing the circuit?
I know that the neutral point of a distribution transformer is connected to the grounding (earthing) wire, so I think they are the same.
Can I use the neutral wire for protecting metal-cased electric ...
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Why on earth are o-scopes earth referenced?
Thinking about it: You would never find a "Grounded" multimeter as robust and useful if a path to ground through the multimeter were introduced, modifying the circuit's behaviour and possibly damaging ...
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Is ground connection in home electrical system really necessary?
I know that the answer to my question is "Yes, it is!". The ground connection is needed to avoid a person touching a metallic part of faulty equipment to be electrically shocked. So the ...
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In any electrical equipment having single ph 230 v ac supply ,if neutral and earth wire exchanged then what will be the consequence
I am handling the supply in a locomotive coach and have noticed that the neutral and earth wires have been accidentally flipped,inside the appliance(hot case) is there a problem from the safety point ...
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Why is earth used for ground? Literally earth?
I never considered earth to be particularly conductive. It's just dirt, after all.
However, I've seen "earth ground" conductive stakes driven into the ground in order for electricity to be grounded, ...
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Why is main's neutral tied to earth?
My dad is an Electrician and I myself am an Electronics Design Engineer, and to this day he still hasn't been able to give me a good reason for this.
Consider the two following pictures/situations - ...
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"Ground" vs. "Earth" vs. common vs. negative terminal
This may just be me not having a degree in electrical engineering or electronics, but the whole notion of "ground" and "earth", when used in electrical circuit diagrams (especially integrated circuits)...
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Can I ground the negative DC bus of a variable frequency drive?
Suppose I have a typical VFD: rectifier, DC bus caps, inverter, feeding a motor.
In general it would not be advisable to tie the DC bus to earth ground, because the AC line may also be referenced to ...
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Ground Symbol, which one I should use?
I normally use this symbol in my schematic as my signal ground.
But recently my manager asked me to use this symbol instead because the one that I am using is the earth ground and I should use the ...
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Does potential difference exist between Earth ground in geographically diverse locations?
Earth ground is used as a reference from which all voltages are measured in systems which are earth grounded. Because the earth absorbs or dissipates nearly unlimited electric charge, it should always ...
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Should I connect a cable's shield to the ground layer of board when it's isolated from earth?
I have a controller board powered by DC that may or may not be isolated from earth ground. The chassis of the device is non-metallic.
This board connects through a long (30-40m), shielded cable to a ...
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Resistor or low impedance path between common ground point and mains earth?
A simple EPA (ESD Protected Area) consists of 3 things:
wrist strap
antistatic mat
common point ground
Wrist strap and antistatic mat both should grounded to the common point ground.
ANSI/ESD S6.1 ...
user127725
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Grounding the chassis with capacitor
My question involves chassis grounding to earth ground.
My PCB circuit is a simple signal generator using a microcontroller. It has a separate 'ground' from earth ground, supplied by a floating 5VDC ...
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What is the effect on noise immunity of a floating shield on a shielded twisted pair
We have an installed system where resistive sensors are connected to some electronics by shielded cables of between 2 and 10 metres. The cable is a twisted pair sheathed in a stainless steel braid. ...
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Earth Ground Portable Generator
I recently bought a pure sine wave 2kV portable generator to use for camping. In the manual it states that the generator should be grounded to actual earth through a metal stake and then attached to ...
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Why are laptops grounded to earth via 1 MΩ resistance but desktops are not?
I measured a few laptop AC-to-DC adapters. They have 1 MΩ between the GND pin (goes into the laptop) and the earth prong (into the wall).
Desktops are grounded directly to earth: 0 Ω.
Why this ...
user127725
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Proper Chassis Grounding
I'm starting to design things that run off mains voltage and I want to be sure that I have a proper connection from my chassis to earth ground.
I've been reading a bit about proper grounding and have ...
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What is the difference between neutral and ground?
What is the difference between neutral and ground? I do not understand the difference.
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Is it possible for lightning strike to travel up ground / earth pin on a mains outlet?
I live in a country that follows the UK mains specification, where there are 3 pins on a wall outlet with the topmost pin being earth/ground. Now, is it possible that during a lightning strike, extra ...
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About floating ground and circuit problems
Good morning,
I have a power supply with floating ground that drives my circuit.
Since the circuit doesn't work as expected (it works fine only if the ground is tied to earth) I did some measures with ...
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Is 'grounding a desktop PC via 1MΩ resistor' unsafe when working inside the case?
Activity: maintenance (installing/replacing hardware parts, like motherboard, CPU, DIMMs, graphics cards) inside an ATX case. Goal: ESD protection and user safety.
Original question: Is 'grounding a ...
user127725