Linked Questions

5
votes
4answers
66k views

Neutral vs ground wire? [duplicate]

I have a simple question about neutral and ground wire. Since the neutral is connected to the ground, I have problems understanding the difference. Assuming it is connected to the ground, it should ...
3
votes
4answers
2k views

My country does not have grounding system, How can I protect myself?

I live in Egypt where the neutral wire is grounded. The ground wire is not separated from the neutral wire. A wall outlet has two holes only (live and neutral), The third whole (ground) does not exist....
0
votes
6answers
4k views

Why are both fuse and earthing are needed?

This question arose in my mind today that when you already have the fuse for safety precautions why do you need the earthing?
1
vote
4answers
1k views

How does grounding the circuit provide safety?

I don't understand the concept of grounding a circuit for safety reasons, in this circuit that I simulated, imagine my hand touching the circuit as the closed switch. I am creating a closed loop ...
0
votes
4answers
379 views

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 ...
1
vote
2answers
2k views

Is it dangerous not to connect ground to a 12v power supply

Alright, so I realize that this probably is a very foolish question but I'm new to electronics and how they work. Basically I have a 12v regulated power supply that I use for a car audio amplifier in ...
0
votes
4answers
2k views

Neutral and the earth are bonded at the main panel or the substation but why is only earth wire used for safety?

Typical distribution system can be illustrated as: Here are my premises (and assumptions): 1-) Chassis in a house must be connected to the earth, not to the neutral. 2-) The earth and the neutral ...
0
votes
1answer
706 views

Why have a ground rod?

I read this on another site: "In a properly designed circuit, if a fault were to occur on the 120-volt outlet between the hot-wire and the ground, the current will flow through ground wire back to ...
0
votes
3answers
878 views

Why 2 pole AC power switch?

What is the purpose of switching both load and neutral lines of AC power as opposed to just switching the load wire?
3
votes
5answers
175 views

If ground and neutral are bonded at main panel, why aren't all grounded device chassis energized?

I know this is a question with variants that have been asked countless times on the internet and on this site. Believe me that I have scoured through these questions and answers in search for a ...
0
votes
2answers
174 views

Outlet grounding confusion

I don't have much AC knowledge, but I am willing to learn. I've been surfing the web to find out more about outlet grounding. I still want to know more, that is why I am asking this here. Grounding ...
0
votes
2answers
90 views

where the extra electricy in earthing goes? [closed]

excuse me I'm newbie in electricity , can you please explain how electric will go through one cable that is connected to an earthing rod that is not connected to the circuit or the system being ...
-3
votes
3answers
108 views

Current from mains to Earth [closed]

There are 3 wires in most home appliance I see - 220V, neutral, and Earth. Sometimes when I measure resistance from Earth to certain things in my house, I can see which things have a current path to ...