Why do we need good earthing for systems and medical equipment?

Why do we need good earthing for systems and medical equipment?

Equipment provides highest degree of protection against electric shock. It is safe for electrical connection to the heart of the patient. The patient part of the equipment is also isolated (floating circuit) and is separated from earth like BF. The permitted leakage current is much lower than for type B and BF.

What is earthing and equipment earthing?

System earthing deal with earthing of the system neutrals 2 sure system security and protections while equipment earthing deal with earthing of non current carrying parts of the equipment to ensure safety of person and protection against lightning.

What are the equipment grounding methods?

• Equipment Grounding Conductors.
• Isolated Grounding System.
• Branch-Circuit Grounding.
• Ground Resistance.
• Ground Rods.
• Ground Ring.
• Grounding Electrode System.
• Lightning Protection System.

What electrical equipment needs grounding?

The term grounding is commonly used in the electrical industry to mean both “equipment grounding” and “system grounding”. Equipment grounding means the connection of earth ground to non-current carrying conductive materials such as conduit, cable trays, junction boxes, enclosures, and motor frames.

What is the main purpose of grounding?

Grounding of electrical equipment has two purposes: To ensure that persons in the area are not exposed to dangerous, electric-shock voltage. To provide current-carrying capability that can accept ground-fault current without creating a fire or explosive hazard.

What is another name for equipment earthing?

Equipment earthing (safety grounding) connecting bodies of equipment (like electric motor body, transformer tank, switchgear box, operating rods of air break switches, LV breaker body, HV breaker body, feeder breaker bodies etc) to earth.

What is purpose of grounding?