1
An Electrical installation certificate requires a tick against three types of work, they are
(A)
Minor works, Periodic inspection, Alterations
(B)
Periodic testing, additions, visual inspection
(C)
New installations, Alterations, Additions to existing installations
(D)
Cable colour change, New switches, low energy lamps
2
An Electrical installation certificate requires the due date of the first periodic inspection
and test to be recorded by
(A)
(B)
(C)
(D)
3
Which of the following is a non statutory document
(A)
EWAR 1989
(B)
BS 7671
(C)
ESQCR 2002
(D)
HASAWA 1974
4
Which sense human sense would be best suited to identifying an incomplete enclosure
(A)
Smell
(B)
Hearing
(C)
Touch
(D)
Sight
5
High levels of safety must be present when using test leads and probes, which of the
following would be suitable
(A)
Accurate test equipment
(B)
Finger guards
(C)
Probes exceeding 4mm
(D)
Very short leads
6
Which instrument would be used to carry out a test for the continuity of protective bonding
conductors
(A)
A low resistance ohmmeter
(B)
A continuity tester
(C)
A high ohmmeter
(D)
An insulation resistance tester
7
When carrying out a test for protective bonding continuity the test instrument should have
a range of
(A)
0.2 to 2MΩ
(B)
0.01 to 100Ω
(C)
2.0 to 20Ω
(D)
0.2 to 2.0Ω
(D)
0.2 to 2.0Ω
8
When carrying out a test on main protective bonding it is important that
(A)
One end is disconnected
(B)
The installation is not isolated
(C)
It is connected at both ends
(D)
The correct colour test leads are used
(A)
One end is disconnected
9
When carrying out a ring circuit test the end to end resistance for each live conductor is
0.6O and the cpc end to end resistance is 1.0O. The expected value between L and E at each
socket after cross connection would be
(A)
1.6Ω
(B)
0.3Ω
(C)
0.4Ω
(D)
1.2Ω
(C)
10
The minimum permissible insulation resistance value between live conductors and earth on
a low voltage lighting circuit is
(A)
1.0Ω
(B)
1.0mΩ
(C)
1.0 MΩ
(D)
0.5MΩ
(A)
A low resistance ohmmeter
(C)
1.0 MΩ
11
State the minimum acceptable insulation resistance test voltage for a circuit supplying
equipment at 600v
(A)
1000v d.c.
(B)
500v d.c.
(C)
600v d.c.
(D)
250v d.c.
(A)
1000v d.c.
12
Name three special locations identified in BS 7671
(A)
Caravan park, ice skating rink, room containing a bath or shower
(B)
Restrictive conductive location, Marina, Construction site
(C)
Sauna, areas with protective conductor currents, Swimming pool
(D)
Street lighting, mines and quarries, underground car parks
13
The IP rating specific to finger protection is
(A)
IPXXB
(B)
IP2X
(C)
IPXXD
(D)
IPX2
(A)
IPXXB
14
The minimum IP rating for the cover plate on the top of a motor is
(A)
IP56
(B)
IPX2
(C)
IPX4
(D)
IP4X
(D)
IP4X
15
The external loop impedance for an installation should be measured at
(A)
The end of a final circuit
(B)
The nearest socket outlet
(C)
The origin of the supply
(D)
At each socket outlet
16
The maximum Ze expected for a TN-C-S system would be
(A)
0.8Ω
(B)
0.035Ω
(C)
21Ω
(D)
0.35Ω
(D)
0.35Ω
17
Ze should always be measured with the earthing conductor
(A)
Disconnected from the consumers unit
(B)
Coiled up
(C)
Bypassed
(D)
Connected to the consumers unit
(A)
Disconnected from the consumers unit
18
A metallic earth return path would be found in a
(A)
TT system
(B)
TN-S system
(C)
TN-C-S system
(D)
TN-C system
(B)
19
The symbol I∆n is used to indicate the
(A)
Maximum RCD operating current
(B)
The tripping time of an RCD
(C)
The type of RCD
(D)
The current at which the RCD should trip
20
The trip rating of an RCD used for additional protection should be
(A)
0.03mA
(B)
0.30mA
(C)
100mA
(D)
0.03A
(C)
The origin of the supply
(D)
0.03A