Earthing Conductors

Earthing conductor is used to connect earth rod to the terminal during earthing. It is commonly made of copper, aluminium and available in red, blue, green and other colors. It is available in stranded conductors with 1 core, 2 core etc. The voltage rating is 220V, 240V, 50v etc. It is generally used on construction sites, oil drilling industry, etc.

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Detailed Description for Earthing Conductors

An earthing system or grounding system is circuitry which connects parts of the electric circuit with the ground, thus defining the potential of the conductors relative to the Earth's conductive surface. The choice of earthing system can affect the safety and electromagnetic compatibility of the power supply. In particular, it affects the magnitude and distribution of short circuit currents through the system, and the effects it creates on equipment and people in the proximity of the circuit. If a fault within an electrical device connects a live supply conductor to an exposed conductive surface, anyone touching it while electrically connected to the earth will complete a circuit back to the earthed supply conductor and receive an electric shock.

A protective earth (PE), known as an equipment grounding conductor, avoids this hazard by keeping the exposed conductive surfaces of a device at earth potential. To avoid possible voltage drop no current is allowed to flow in this conductor under normal circumstances. In the event of a fault, currents will flow that should trip or blow the fuse or circuit breaker protecting the circuit. A high impedance line-to-ground fault insufficient to trip the overcurrent protection may still trip a residual-current device if one is present. This disconnection in the event of a dangerous condition before someone receives a shock, is a fundamental tenet of modern wiring practice and in many documents is referred to as automatic disconnection of supply (ADS). The alternative is defence in depth, where multiple independent failures must occur to expose a dangerous condition - reinforced or double insulation come into this latter category.

 

People use an earthing system mainly for these applications:

·         To protect a structure from lightning strike, directing the lightning through the earthing system and into the ground rod rather than passing through the structure.

·         Part of the safety system of mains electricity, preventing problems associated with floating ground.

·         The most common ground plane for large monopole antenna and some other kinds of radio antenna.

Other, less common applications of earthing systems include:

·         Single-wire earth return.

·         One at each end of a ground dipole ELF antenna.

 

 


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