Visual inspection The installation must visually inspected before testing begins. However, for scientific pur-
poses this not acceptable since velocity also concerned with direction.
Velocity everyday conversation often use the word velocity mean the same
as speed, and indeed the units are the same. The
aim the visual inspection confirm that all equipment and acces-
sories are undamaged and comply with the relevant British and European
Standards, and also that the installation has been securely and correctly
erected.
Step transformers Step transformers are used increase the output voltage.
Step down transformers Step down transformers are used reduce the output voltage, often for
safety reasons.
Trap protection Trap protection places alarm sensors internal doors and pressure pad
switches under carpets through routes between, for example, the main
living area and the master bedroom.
.
Thermosetting polymers Once heated and formed, products made from thermosetting polymers are
fixed rigidly.
Synthetic rubber Synthetic rubber manufactured, opposed being produced naturally.
Trunking trunking enclosure provided for the protection cables which is
normally square rectangular cross-section, having one removable
side.Glossary terms
383
Spring toggle bolts spring toggle bolt provides one method fixing hollow partition walls
which are usually faced with plasterboard and plaster skimming.
Tensile force Tensile force the force pulling things apart.
Static electricity Static electricity voltage charge which builds many thousands of
volts between two surfaces when they rub together. The elec-
tricity generated power station stepped for distribution the
National Grid network.
Time sheets time sheet standard form completed each employee inform the
employer the actual time spent working particular contract site. Trunking may thought more accessible conduit system.
Transformer transformer electrical machine which used change the value of
an alternating voltage. Plug tops, socket outlets and switch plates are made from this
material.
Thermoplastic polymers These may repeatedly warmed and cooled without appreciable changes
occurring the properties the material.
Switching for mechanical The switching for mechanical maintenance requirements similar those
maintenance for isolation except that the control switch must capable switching
the full load current the circuit piece equipment.
Statutory Regulation Statutory Regulations have been passed Parliament and have, therefore,
become laws
