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WorksheetsCannock Inspection and Testing
Total questions: 35
Worksheet time: 38mins
If multiple trades are working on a piece of equipment which needs
to remain isolated until each trade is finished.
What would be the best lock out device?
Don't lock out just
check with the other trades
A single combination
lock out
Single lock out with a single key
Multi hasp lockout
Regional electricity companies quote a maximum likely value of external loop impedance (outside the consumer's installation) for a TN-S system as:
0.35 ohm
0.8 ohm
21 ohm
200 ohm
EAWR states that working live is acceptable unless:
Suitable tools are used
Suitable PPE is worn
It is reasonable in all circumstances for it to be dead
An engineer gives you permission
Which of the following is the correct voltage for carrying out an insulation resistance test on a 400V three-phase circuit terminated at an isolator?
250 V
400 V
500 V
1000 V
End-to-end resistance checks would be carried out on a:
radial circuit
lighting circuit
ring final circuit
fused connection unit
The purpose of the test button of a residual current device is to check the
Earth fault loop impedance
Continuity of the earthing conductor
Earth electrode resistance
Mechanical operation of the rcd
What is the IP rating for the top of an electrical enclosure
IP4X
IP2X
IPXXB
IP
What is the process called for a new installation
EICR
EIC
Initial Verification
Periodic inspection and testing
What does the initial verification prove?
the installation is safe to stay into service
the installation is safe to put into service
the installation does not work
the installation needs a minor works certificate
What is the test voltage to be applied on an IR test for a low voltage circuit?
250v AC
500v DC
250v DC
500v AC
what is the test instrument called for the continuity of a ring final circuit called?
insulation resistance tester
continuity tester
Low resistance Ohm Meter
MFT
when performing the Live test of polarity what is the reason?
to confirm the supply to the installation has correct polarity
the confirm the insulation of the cable
to confirm we have a cpc at every point
to make sure we have an earth fault loop path
what is the name of the tester used for an earth electrode resistance tester?
low reading ohm meter
earth electrode resistance tester
MFT
insulation resistance tester
what percentage do we take of our maximum earth fault loop impedance values from BS7671
100 %
70%
80%
25%
what certificate should be provided for an alteration to an existing circuit?
electrical installation minor works certificate
electrical installation certificate
electrical installation condition report
an invoice
A reading of below 2 mega ohms requires what action?
no action as it is acceptable
full rewire
further investigation
change of accessories
Put these tests in the correct order?
Continuity of CPC, Insulation resistance, Polarity, Continuity of ring final circuit
Insulation resistance, Polarity, Continuity of ring final circuit, Continuity of CPC
Continuity of CPC, Continuity of ring final circuit, Insulation resistance, polarity,
Polarity, Continuity of CPC, Continuity of ring final circuit Insulation resistance
what tester is used for the earth fault loop impedance measurement?
low reading ohm meter
earth fault loop impedance tester
earth electrode resistance tester
approved voltage indicator
What two tests make up your IPF measurement?
Polarity and insulation resistance
PEFC and PSCC
Ze + (R1 + R2)
PEFC and Zs
Testing is to be carried out at the origin of a large, unoccupied building which has a standby generator. What must be done before tests are carried out?
A. Check the operation of the standby supply.
B. All main protective bonding must be disconnected.
C. Temporary lighting must be installed for all escape routes.
D. The standby supplies must be isolated to ensure safe testing.
Which document is statutory?
A. BS 7671.
B. EAWR.
C. GN3.
D. GS38
Which value would be obtained when a continuity of circuit protective conductors test, is measured at the furthest point on a radial circuit, using a temporary link between line and cpc at the distribution board?
A. R1
B. R2
C. (R1 + R2).
D. (R1 - R2).
What would be indicated by the readings below, during a test of ring final circuit continuity? Line – Line loop reading = 0.1 Ω Neutral – Neutral loop reading = 0.1 Ω cpc – cpc loop reading = 0.167 Ω
A. The cpc is a shorter length than the live conductors.
B. The cpc is the same csa as the live conductors.
C. The cpc is a larger csa than the live conductors.
D. The cpc is a smaller csa than the live conductors.
What would be the minimum acceptable value of insulation resistance for a 230 V lighting circuit?
A. 0.5 MΩ.
B. 1 MΩ.
C. 2 MΩ.
D. 4 MΩ.
What should be confirmed during a test for polarity?
A. Continuity of line conductors.
B. Continuity of protective conductors.
C. Outer metal contacts of ES lamps are connected to the line conductor.
D. Single-pole switches and devices are connected in the line conductor only.
The BS 7671 maximum tabulated earth fault loop impedance value for a protective device is 2.73 Ω. What is the maximum measured value of earth fault loop impedance permitted for a circuit protected by this device?
A. 3.41 Ω.
B. 2.73 Ω.
C. 2.18 Ω.
D. 2.04 Ω.
What would be recorded as Ipf when PEFC and PSCC at the origin of a three-phase installation are tested using a single-phase instrument, and values of 0.9 kA and 1.5 kA were measured respectively?
A. 0.9 kA.
B. 1.5 kA.
C. 2.4 kA.
D. 3.0 kA
Who should be provided with the original copies of test documentation upon completion of a rewire of a rented domestic property?
A. The client.
B. The tenant.
C. The local authority.
D. The insurance company.
What are the options, when filling in the boxes on a Schedule of Inspection, for a new installation?
A. ✓ : X : N/A : LIM.
B. ✓ : X : N/A.
C. ✓ : X : LIM.
D. ✓ : N/A.
What is a Tong tester and what does it measure
Its to measure current in a cable otherwise known as a Clamp meter
It measures earth loop Impedance it measures resistance
It a taste test
Its to measure IP ratings
On an Electrical Installation Certificate what information would be in the
Nature of supply parameters section
Maximum Demand
Main Switch location
Nominal voltage
Extent and limitations
Which Part of the Regulations would I find inspection and testing in
Part 8
Part 1
Part 4
Part 6
What inspection is listed in the schedule of inspections on an EIC
Maximum Insulation Resistance result
Maximum ZS results
Condition of consumers intake equipment
Trip time of RCDs
Which of the below options would I find on the schedule of inspections.
Earth loop Impeadance values
Isolation and Switching
Maximum PFC values
Functional test
Whos signature is necessary for an electrical installation
Lead accounts manager
Architect
Designer
H&S manager
