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1
QUESTION 1:
WHAT IS AN ELECTRICAL INSTALLATION?
ANSWER:
The regulations published under notice R2920 in the Government Gazette
23rd October 1992, as amended in the new EIR 2009, say that an electrical
installation is where any machinery is used for the transmission of electricity from a
point of control to a point of consumption on any premises. Vehicle, telecommunication,
and certain other equipment including that of the supply authority is excluded from
the definition.
QUESTION 2:
WHO IS RESPONSIBLE FOR THE SAFETY, SAFE USE AND MAINTENANCE OF AN INSTALLATION?
ANSWER:
These same regulations state clearly that the USER/LESSOR/LESSEE is responsible for
the installation. Reg 2(1) (2) (3). EIR 2009.
QUESTION 3:
HOW CAN A LAYMAN KNOW IF THE INSTALLATION IS SAFE?
ANSWER:
By ensuring that the installation is covered by a valid certificate of compliance /
test report . The law requires that the USER must possess a valid certificate of
compliance for the installation being used.
QUESTION 4:
WHERE CAN A CERTIFICATE OF COMPLIANCE BE OBTAINED?
ANSWER:
A certificate of compliance / test report can be obtained from a REGISTERED PERSON,
who has been registered by the Chief Inspector of the Department of Labour in terms
of the regulations (as an electrical contractor).
QUESTION 5:
WHAT MUST THE REGISTERED PERSON DO BEFORE ISSUING A CERTIFICATE OF
COMPLIANCE TEST REPORT?
ANSWER:
The law requires that a visual inspection covering no less than 15 aspects of the
installation must be carried out as well as a series of 16 electrical tests. The details are
shown on page 18 at the back of the booklet.
QUESTION 6:
WHAT ELECTRICAL TESTS MUST BE CARRIED OUT?
ANSWER:
The tests required are: (see page 18)
1) Continuity of bonding
2) Resistance of earth continuity conductor
3) Continuity of ring circuits (if applicable)
4) Earth loop impedance test: at main switch
5) Prospective short-circuit current at point of control (PSCC) for sub-distribution boards
6) Elevated voltage between incoming neutral and external earth (ground)
7) Earth resistance at electrode (if required)
8) Insulation resistance
9) Voltage at main distribution board with no load for each phase to neutral
10) Voltage at main distribution board with load (as calculated for full load) for each
phase to neutral
11) Voltage at available load (worst condition as calculated for full load) for each
phase to neutral
12) Operation of earth leakage units
13) Operation of earth leakage test button
14) Polarity of points of consumption
15) Phase rotation at points of consumption for three-phase systems
16) All switching devices, make-and-break circuits
Summary of Contents for ACADEMY T419
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