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A 'floating ground' (or 'floating earth'), in the context of your question, describes an appliance whose metal enclosure is ungrounded when it is designed to be grounded. This can happen, for example, when the supply cable's ground wire is not connected to the earth pin at a plug, or has become accidentally disconnected at the appliance.
The purpose of grounding an appliance's metal enclosure is to provide a low-resistance path to earth in the event that an internal live conductor should accidentally make contact with that enclosure -thus causing the local overcurrent protective device to disconnect the appliance. If the ground wire becomes disconnected, then this protection will no longer apply, and the appliance becomes a shock hazard.
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Why third pin is plastic in 3 pin plug?
Double-insulated electrical appliances, such as electric drills, only require two connections -a line and a neutral- to the supply. An earth (ground) connection is unnecessary. In the UK, all electric socket outlets have shutters that blank off the line and neutral terminals when there is no plug inserted. These shutters are operated by the earth pin of the plug. As double-insulated appliances don't require an earth connection, a plastic earth pin is moulded into the plug in order to open the socket shutters in place of a normal metallic earth pin.
What is an Earthed voltage transformer?
An earthing transformer provides a neutral in a delta connected system.
Explain what a circuit main earth does?
Basically, it's an earth connection applied for the purpose of making apparatus safe to work on before a Permit to Work or Sanction for Test is issued. Disconnect from power, test dead, apply CME.
Draw and explain the operation of fault voltage ELCB and residual current device?
ELCB means Earth Leakage Circuit Breaker -- it is used to trip the Circuit breaker if any leakage fault occured means
Why are electricians wearing slippers while working?
They're not slippers. They are insulating shoe covers or insulating boots. They stop electricity going down to earth from a live wire if you accidentally touch it. That may stop you getting electrocuted
Is the sea floating on the Earth or is the Earth floating on the sea?
the sea is technically floating on the earth, as at the bottom of the sea there are techtonic plates.. Our oceans are just gigantic canyons that are filled to the brim with water.
What does a portable appliance tester do?
A portable appliance tester is a device used to check the safety and electrical integrity of electrical appliances. It typically performs tests such as insulation resistance, earth continuity, and polarity checks. This helps ensure that appliances are safe to use and comply with electrical safety regulations.
Explain how earth's mass is related to its ability to have an atmosphere?
The Earth has an atmosphere because it has the gravity necessary to keep the gases from floating off into space. The more mass a planet has, the more gravity it has, and the more gravity it has, the thicker an atmosphere it can sustain.
Is the UK a floating island?
No, the UK is not a floating island. No islands are truly floating islands, as all land forms are connected to the earth's crust.
Reasons for Earth's gravity?
So that we will not be floating in the air.
What planet looks like its floating on its side?
Earth
What is the surface of the earth floating on?
The crust, on which we live on, is like islands of tectonic plates that are floating on the semi-molten magma.
Can you see the picture of earth from space?
Yes you can because you are floating in a orbit around earth
How is gravity important for earth?
Gravity Pulls us Down on Earth. We would be Floating With Out it!
Explain gravity on earth in regards to different masses?
if their was no gravity on earth everything would be floating around in the air and us humans would have no physical control of ourselves. Why do you think astronauts are able to float around in mid in outer space because their is no gravity.
How do you explain the effects of the sunlight striking earth?
explain the effects of the sunlight striking earth
About how many pieces of space are floating around earth?
a %$#@load
