Electrical wiring for dummies pdf free#

RCCB (3) РІР‚вЂњ Residual Current Circuit Breaker, what most people commonly refer to as an РІР‚ВRCDРІР‚в„ў, will often be found in a consumer unit protecting a bank of circuits.

There are three commonly encountered types: If there was a fault between line and earth, the RCD would trip as there would be no current on the neutral conductor. It does this by essentially monitoring the line and neutral currents. RCD РІР‚вЂњ Residual Current Device, this is a type of device used to disconnect the electrical supply to a circuit, or bank of circuits in the event of a fault from line to earth. They are designed so that when more current is drawn through them than they are designed to take, a part of it melts, causing the circuit to become open and the electricity supply to become disconnected. РІР‚В SinglesРІР‚в„ў (5) РІР‚вЂњ A colloquial term used for when a cable is a self contained single conductor, can refer to any cable that is singular, however in a domestic setting PVC insulated singles are often what is mean by the use of the term.Р”В¬ircuit breaker (1) РІР‚вЂњ A type of protective device for circuits, it will protect a circuit from overload and fault currents.Р”Р‡use (2) РІР‚вЂњ A fuse is a protective device.

Electrical wiring for dummies pdf free#

LSHF (4) РІР‚вЂњ Low Smoke Halogen Free cable is a cable with a particular type of insulation that is designed so that it emits a small amount of smoke and zero halogen when exposed to fire or heat. SWA (3) РІР‚вЂњ Steel Wire Armour, this is a cable that is surrounded by a layer of armour made up of steel wire, it is generally used where the cable requires a high degree of protection.

Each individual conductor is made up of very fine strands of copper to allow the cable to repeatedly flex.

A third un-insulated conductor sits between the two and this is used as the Circuit Protective Conductor or РІР‚ВearthРІР‚в„ў as it is commonly known.Р”Р‡lex (2) РІР‚вЂњ A flexible cable that has a soft rubber or thermoplastic outer sheath and individually insulated conductors inside it. Inside, it has two single conductors of the same size that are both separately insulated, one is brown in colour denoting its intended use as the line conductor, and the other is blue, denoting its intended use as the neutral conductor. Twin and Earth (1) РІР‚вЂњ This is the most common cable used in domestic electrical installations, it is a flat grey thermo-plastic sheathed cable. Cable РІР‚вЂњ A cable is made up of one or more conductors and their insulated surrounding