Nutral wire can be measured by using clamp meter, if there is a current passing through the wire, we got a reading in the clamp meter i.e. 2A.
If we clamp the earth wire by the clamp meter the reading will be zero.
Making a load On, By using a clamp meter for measuring the current in the wires : we find a reading in Amps. if we clamp the neutral wire. and zero when clamping the earthing wire.
The earthing wire does not normally carry current.
only earthing can not be measure. Anyone can only measures the voltage and the current with respect to the earthing .Thus it is impossible to measure the earthing.
GREEN
no use laying an earthing strip in a cable tray better tap both the ends of the earthing wire to the trunking,it will save your wire also,or lay out a cable in the other trunking where you have low voltage wire running in.
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.
we can measure earth resustance with megger.b.vigneshwar
Yes
earth wire not cnnected from main earth
A thick earthing wire, or a wide, flat conductor, is preferred, because it's more important to minimize henrys (inductance) in the earthing system than to reduce ohms (resistance). For the same reason, corners and small angles in an earthing conductor should be avoided, and the conductor should approach any connections from a parallel direction.
normally the blue and red wires are hot white is standaed for nutral,
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.