1
The documents which should be completed after the addition of a ring final circuit to an
existing installation are
(A)
Minor works certificate and a condition report
(B)
Schedule of tests and an electrical installation report
(C)
Electrical installation report, Schedule of test results and a schedule of inspections
(D)
Electrical installation condition report, Condition report schedule of inspections and a schedule
of test results
2
The statutory document which relates to the DNO
(A)
(B)
(C)
(D)
3
Who should be consulted with regards to the extent and limitations when carrying out a
periodic inspection which has been requested on a licensed property?
(A)
The client and the DNO
(B)
The DNO and the insurance company
(C)
The insurance company and the fire brigade
(D)
The local licensing authority and the landlord
4
When and where should the extent and limitations of a periodic inspection be recorded?
(A)
Before starting work and on an electrical installation condition report
(B)
On completion of the work and on an electrical installation condition report
(C)
Before starting work and on an electrical installation certificate
(D)
Before starting work and on a periodic inspection report
5
List in the correct sequence the first three tests to be carried out on a new 3 phase
industrial cooker circuit
(A)
Continuity of cpc, insulation resistance an polarity
(B)
Polarity, continuity of cpc and insulation resistance
(C)
Visual inspection, earth fault loop and continuity of cpc
(D)
Polarity, earth fault loop impedance and insulation resistance
6
What would be the most appropriate way to verify the continuity of a 45m long 10mm2
protective bonding conductor
(A)
Use method 2
(B)
Visual inspection
(C)
Use method 1
(D)
R1 + R2 method
(A)
Use method 2
7
The maximum length of 10mm2 cable which has a resistance of 1.83mO per mtr which can
be used for main protective bonding is
(A)
20mΩ
(B)
27mΩ
(C)
29mΩ
(D)
25mΩ
(B)
8
When carrying out the 1st stage of a ring final circuit test the most likely reason for the cpc
resistance value being higher than the live conductors is
(A)
The csa is greater
(B)
The conductor is longer
(C)
The csa is smaller
(D)
The conductor is shorter
(C)
The csa is smaller
9
Stage one of a ring final circuit test gives the values of the live conductors as 0.6O and the
cpc as 0.99O. The tests carried out at stage 2 and stage 3 should provide the following
values at each socket on the ring
(A)
0.3Ω and 0.397Ω
(B)
0.6Ω and 0.397Ω
(C)
0.397Ω and 0.8Ω
(D)
0.3Ω and 0.3Ω
(A)
0.3Ω and 0.397Ω
10
The effect on the measured value of insulation resistance and conductor resistance when
the length of the conductor is increased is
(A)
Insulation resistance will reduce and the conductor resistance will increase
(A)
Continuity of cpc, insulation resistance an polarity
(B)
Insulation resistance will reduce and the conductor resistance will reduce
(C)
Insulation resistance will increase and the conductor resistance will increase
(D)
Insulation resistance will not change and the conductor resistance will increase
11
The measured value of insulation resistance when a circuit is tested together with ten other
circuits will
(A)
Not change
(B)
Increase
(C)
Reduce
(D)
Be ten times greater
12
An insulation resistance test carried out on a circuit containing a surge protection device,
the test voltage used and minimum insulation resistance value is
(A)
500v d.c. and 1 MO
(B)
250v d.c. and 1 MO
(C)
250v d.c. and 0.5MO
(D)
250v d.c. and 1 mO
13
One effect of a circuit protective device connected in to the neutral conductor only would
be
(A)
The device will operate on a neutral to earth fault
(B)
The device will not operate on overload
(C)
The circuit will remain live after an overload
(D)
The device will not operate during a short circuit
14
Two special locations which are divided into zones are
(A)
A restrictive conductive location and a room containing a bath or shower
(B)
A Sauna and a Construction site
(C)
A Marina and a Caravan site
(D)
A Sauna and a room containing a bath or shower
15
The recommended IP rating for equipment installed in Zone 1 of a Bathroom is
(A)
IPX4
(B)
IP4X
(C)
IPXXD
(D)
IP5X
16
Electrical equipment installed in a wet room which is cleaned by the use of a hose should
have a minimum IP rating of
(A)
IP5X
(B)
IPX5
(C)
IPX4
(D)
IPX8
17
Using the circuit data provided
Ze 0.32O
Conductor resistance 7.41mO/m
Circuit length 38 m
The measured earth fault loop impedance for the circuit would be
(A)
0.563Ω
(B)
0.883Ω
(C)
0.442Ω
(D)
0.281Ω
18
What is the maximum percentage voltage drop permitted for a 230 volt lighting circuit
(A)
6.9%
(B)
11.9%
(C)
5%
(D)
3%
19
The maximum volt drop permitted for a 230v ring circuit is
(A)
6.9v
(B)
11.5v
(C)
5v
(D)
3v
(B)
11.5v
20
The type of inspection and test most likely to require verification of volt drop is
(A)
Initial verification
(B)
Installation where no documentation is available
(C)
Periodic inspection and test
(D)
Industrial
(C)
Periodic inspection and test