What is the purpose of a protective conductor?
What is the purpose of a protective conductor?
The purpose of the protective conductors is to provide a path for earth fault current so that the protective device will operate to remove dangerous potential differences, which are unavoidable under fault conditions, before a dangerous shock can be delivered.
Can you use the conduit as CPC?
Steel conduit is permitted for use as a circuit protective conductor (CPC).
What is CSA electrical term?
CSA. Cross Sectional Area usually of a cable.
What does a main bonding conductor connect to?
Main bonding – Green and yellow conductors that connect metal pipes (gas, water or oil) from inside a building to the main earthing terminal of the electrical installation.
What is a bonding conductor?
Bonding conductor — a conductor that connects the non-current-carrying parts of electrical equipment, raceways, or enclosures to the service equipment or system grounding conductor.”
What is the purpose of a CPC within a circuit?
The circuit protective conductor (increasingly called the ‘c.p.c.’) is a system of conductors joining together all exposed conductive parts and connecting them to the main earthing terminal. Strictly speaking, the term includes the earthing conductor as well as the equipotential bonding conductors.
What can be used as a protective conductor?
Use as a main protective bonding conductor The armouring of a cable may be used as a main protective bonding conductor. With reference to Fig 1, the distribution board is supplied from the main switchgear at the origin of the installation by an armoured cable.
What is AWM wire type?
Appliance wiring material (AWM) is a large category of wire and cable that spans over different constructions. AWM is commonly used in a variety of applications such as general purpose wiring circuits, control circuits and internal wiring of appliances.
What is the purpose of a circuit protective conductor?
Circuit Protective Conductor (CPC) The circuit protective conductor (CPC) is used to provide protection from electric shock and to allow sufficient current to flow so the protective devices can trip. Various national and international standards define the requirements for CPC.
Why do you need a circuit protection system?
Electrical power and control systems require circuit protection to prevent fires, short circuits, and equipment damage. As part of their system design process, the electrical engineering team specifies the required circuit breakers and supplemental protectors.
What are the different types of CPCs in a circuit?
Any CPC is also an important consideration in the calculation of Earth Fault Loop Impedance. Common types of allowable CPC include: an insulated or bare conductor in a common enclosure with insulated live conductors a metal conduit, cable management system, or electrical continuous support system
How does overcurrent protection work in a circuit?
Overcurrent protection is provided by circuit breakers or fuses which operate within specific limits, disconnecting the supply automatically when there is an overload or fault current (short circuit or earth fault). Overcurrent conditions arise from overloads or short circuits.
What is the purpose of a protective conductor? The purpose of the protective conductors is to provide a path for earth fault current so that the protective device will operate to remove dangerous potential differences, which are unavoidable under fault conditions, before a dangerous shock can be delivered. Can you use the conduit as CPC?…