It really depends on what gauge (Thickness) of wire were talking about, but plastic and rubber are the most common ones.
human body is good conductor of electricity.For our safety electric tool are coated with insulating materials.
One thing that tradesmen are taught is that you do not depend on the insulation factor of your tool handles to save you from an electrical shock. The fact that tool handles are made of insulating materials is coincidental. The handle material has to be comfortable in the hand, has to be cheap to produce and that it is an insulating material is secondary.All electrical work should be done in the off condition for safety purposes and it does not matter if the handle is an insulating material or not.
Generally, it is for safety purposes.
Any electrical device (switch, receptacle, etc.) is required to have an barrier between the point of electrical connection and the user interface mechanism. This is for safety purposes.
is factor of safety of brittle material half of ductile material
An electrical safety device that can be reset and used again fits the description of an electrical circuit breaker.
The primary purposes of the health and safety regulations are to establish minimum requirements for health and safety in the workplace and to explicitly establish the health and safety responsibilities of employer, employee and government.
safety ground
The Electrical Safety Foundation, sometimes referred to as ESFI is a non profit organization devoted to commercial and residential electrical safety. ESFI produces and distributes safety, educational and awareness materials to groups and organizations to increase the public's knowledge.
electrician tools must be insulated so that they dont get electrocuted
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India is a sovereign nation and develops and follows its own standards for electrical safety.