1.
● prevention detrimental influences (e.
● connection conductors
● identification conductors
● routing cables safe zones
● selection conductors for current carrying capacity and volt drop
● connection single-pole devices for protection switching in
phase conductors only
● correct connection socket outlets, lampholders, accessories and
equipment
● presence fire barriers, suitable seals and protection against ther-
mal effects
● methods ‘basic protection’ against electric shock, including the
insulation live parts and placement live parts out reach by
fitting appropriate barriers and enclosures
● methods ‘fault protection’ against electric shock including the
presence earthing conductors for both protective bonding and
supplementary bonding.
Definition
All existing installations should be
periodically inspected and tested to
ensure that they are safe and meet
the regulations the IEE (Regulations
610 634).
Visual inspection
The installation must visually inspected before testing begins. The
test procedures must followed carefully and the correct sequence, as
indicated Regulation 612.
The method used test installation may inject current into the sys-
tem.3 gives checklist for the initial visual inspection
of installation, including:
Definition
The installation must visually
inspected before testing begins. corrosion)
● presence appropriate devices for isolation and switching
● presence undervoltage protection devices
Key Fact
Testing
● All new installations must be
inspected and tested during
erection and upon completion
● All existing installations must be
inspected and tested periodically
● IEE Regulations 610 634. However, test unlikely identify cracked socket outlet, a
chipped loose switch plate, missing conduit-box lid saddle, is
also necessary make visual inspection the installation.
Definition
The testing installation implies
the use instruments obtain
readings. 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. The
aim the visual inspection con-
firm that all equipment and accesso-
ries are undamaged and comply with
the relevant British and European
Standards, and also that the installa-
tion has been securely and correctly
erected.
All new installations must inspected and tested during erection and
upon completion before being put into service. However, test unlikely
to identify cracked socket outlet,
a chipped loose switch plate, a
missing conduit-box lid saddle, so
it also necessary make visual
inspection the installation. This ensures that the protective conductors
are correctly connected and secure before the circuit energized. This current must not cause danger any person equipment in
contact with the installation, even the circuit being tested faulty.g. All existing installations
should periodically inspected and tested ensure that they are safe
and meet the regulations (IEE Regulations 610 634). Regulation 611.
.Electrical installations and wiring systems
349
Inspection and testing techniques
The testing installation implies the use instruments obtain
readings
