Code of Practice for the Electricity (Wiring) Regulations - 2009 Edition

Code 21 PROCEDURES FOR INSPECTION,
TESTING AND CERTIFICATION
21A Inspection of Low Voltage Installations
A visual inspection should be made to verify that the electrical equipment as
installed is correctly selected and erected in accordance with the Wiring
Regulations and this CoP, and that there is no apparent damage. The visual
inspection should include a check on the following items, where appropriate:
(a) adequacy of working space, access, and maintenance facilities,
(b) connections of conductors,
(c) identification of conductors,
(d ) adequacy of the sizes of conductor in relation to current carrying capacity
and voltage drop,
(e) correct connections of all equipment with special attention to socket
outlets, lampholders, isolators, switches, residual current devices,
miniature circuit breakers, and protective conductors,
(f ) presence of fire barriers and protection against thermal effects,
(g) methods of protection against direct contact with live parts (including
measurement of distances where appropriate), i.e. protection by
insulation of live parts, or protection by barriers or enclosures,
(h) presence of appropriate devices for isolation and switching,
(i) choice and setting of protective and indicative devices,
( j) labelling of circuits, fuses, protective devices, switches, isolators and
terminals,
(k) selection of equipment and protective measures appropriate to adverse
environmental conditions,
(l) presence of danger and warning notices,
(m) presence of diagrams, instructions and other similar information,
(n) connection of single pole devices for protection or switching in phase
conductors only,
(o) methods of fault protection,
( p) prevention of mutual detrimental influence,
(q) presence of undervoltage protective devices,
(r) erection method.
133