The aircraft outer body is made of highly conductive material and insulated with the inner body. In the air Craft outer body gets charged statically which is of very high value.the design is so made that charge tries to remains at the outer surface of the craft. At the time of landing a strip type part touch the ground and all the charged decay in the earth without any damage of anything.
grounding is done for protection of equipment from high voltage & heavy current whereas earthing is done for dead matallic part of machine.
Protection from shock hazard.
chemical earthig is that type of earthing where low water level mostly used in hilly areas
For earthing pipe of 40mm dai & 3 mtr. Long required 5 kg. Of salt & 6.5 kg of charcoal. This type of earthing is done for distribution transformers of various rating.
Chemical Earthing and Conventional Earthing are different types of earthing techniques. Conventional Earthing is based on plate earthing and pipe type earthing but Chemical Earthing on GI or Copper.
The collective nouns for aeroplanes are a flight of aeroplanes or a squadron of aeroplanes.
Earthing is done to make electrical appliances safe and secure, from immediate shock or lightning that may affect building.
Electrical earthing is classified into many types as Neutral earthing Body earthing Pipe earthing Plate earthing Chemical earthing Ground Compound Earthing
Earthing?
An earthing boss and earthing lug are parts of a grounding connection. An earthing boss is in a casting that allows for the drilling and tapping of hole. A earthing lug is used to bond a wire to the ground.
Collective nouns for aeroplanes are a flight of aeroplanes or a squadron of aeroplanes..
System Earthing is the earthing associated with current carrying conductor & is essential for the security of the system. Equipment Earthing is the earthing associated with non-current carrying metal work & is essential for the security of human life and property.