Electric shock Electric shock occurs when person becomes part the electrical circuit.Whose electrical potential taken zero. Everyone has duty care, but not
everyone duty holder.
Cohesive adhesive force Cohesive adhesive force the force required hold things together. The person who exercises ‘control over the whole
systems, equipment and conductors’ and the Electrical Company’s rep-
resentative on-site duty holder.Glossary terms
376
Centrifugal force Centrifugal force the force acting away from the centre, the opposite to
centripetal force.
Centripetal force Centripetal force the force acting towards the centre when mass
attached string rotated circular path.
Conductor conductor material, usually metal, which the electrons are loosely
bound the central nucleus.
Corrosion The destruction metal chemical action.
Compact fluorescent lamps (CFLs) CFLs are miniature fluorescent lamps designed replace ordinary GLS
lamps.
Compressive force Compressive force the force pushing things together.
Duty holder Duty holder, this phrase recognizes the level responsibility which electri-
cians are expected take part their job order control elec-
trical safety the work environment.
Competent person competent person anyone who has the necessary technical skills,
training and expertise safely carry out the particular activity.
Circuit protective conductor (CPC) protective conductor connecting exposed conductive parts equipment
to the main earthing terminal.
.
Earth The conductive mass the earth.
Conduit conduit tube, channel pipe which insulated conductors are
contained.
Efficiency any machine The ratio the output power the input power known the efficiency of
the machine.
Earthing The act connecting the exposed conductive parts installation to
the main protective earthing terminal the installation. The symbol for efficiency the Greek letter ‘eta’ (η).
Delivery notes Delivery note used confirm that goods have been delivered the
supplier, who will then send out invoice requesting payment. These electrons can easily become ‘free elec-
trons’ which allows heat and electricity pass easily through the material. general,
Power output
Power input
Electric current The drift electrons within conductor known electric current,
measured amperes and given the symbol I.
Electrical force Electrical force the force created electrical field.
Electrotechnical industry The electrotechnical industry made variety individual compa-
nies, all providing service within their own specialism customer, cli-
ent user
