Because of the risk of electric shock to people touching it ! It also guards against two wires touching each other - causing a short circuit.
yes and no The problem is that the Word "Wire" refers to the both the metal core and the Wire as a conductor and insulation package. Another problem is what you mean by "quality". What definition are you using? The insulation is critical to determining the use and safety of a wire. The resistance of the metal wire is not affected by the insulation, but its ability to dissipate heat while carrying high current is.
Glass has excellent insulation characteristics
Magnetic wire has a coating of varnish for an insulation.
They are for stripping the insulation off electrical wire.
The action of removing insulation for a wire is called stripping.
The covering of a wire is typically made of materials like plastic (such as PVC), rubber, or nylon. These materials provide insulation and protection for the metal conductor inside the wire.
No, overhead primary wires have no insulation on them and they carry the electricity to the consumers very well. Wires with no insulation on them just need more clearance space around them and between them to prevent the wires from short circuiting to each other or to ground.
Earth wire (or earth grounding wire) is a safety system which helps prevent electric shocks. It is connected to the electrical cable of an appliance.The earth wire connects the metal frame of the electrical appliances to the ground. The convention is to have green colour for earth wires. The purpose of earthing is that in case of an insulation failure in some appliance, this wire connected to the metal body will provide a path for the current to flow on the ground. In absence of earth wire, this fault current would have flown through the body of the operator, causing electrical shock.
To use wire strippers effectively for stripping insulation from wires, first select the appropriate size notch on the wire stripper that matches the gauge of the wire. Place the wire in the notch and squeeze the handles together to cut through the insulation. Gently pull the wire stripper away from the wire to remove the insulation. Be careful not to cut into the wire itself while stripping the insulation.
To remove insulation from electrical wires using wire strippers, place the wire in the appropriate gauge slot, squeeze the handles to cut through the insulation, and then pull the insulation off the wire. Be careful not to cut into the wire itself.
Actually it is insulated, the red coating of varnish is the insulation. Also after a motor is wound, it is soaked in varnish and baked giving it added protection.
To use a wire stripper effectively for stripping insulation from wires, first select the appropriate size notch on the stripper for the wire gauge. Place the wire in the notch and squeeze the handles together to cut through the insulation. Pull the wire stripper away from the wire to remove the insulation. Be careful not to cut into the wire itself.