2392 exam preparation

This Section is highlight the areas covered by the 2392-10 syllabus. Student are expected
to have knowledge of all that is in the syllabus.
For this qualification, candidates will be required to successfully complete both of the
following assessments:
One closed-book multiple-choice online test covering the underpinning knowledge of
outcomes 1-3 (2392-101)
Practical assessment unit (2392-102)
It will be graded pass or fail.
Duration: 100 minutes
No of questions: 50
Outcome number Unit title Number of
items
Approximate
percentage %
1 Preparation for inspection and testing 8 16
2 Inspection 6 12
3 Testing 32 72
Total 50 100
Fundamental Initial Verification of Electrical Installations
There are three areas to this unit:
Preparation for initial inspection and testing
Inspection
Testing
It is recommended that 30-35 hours should be allocated for this unit.
Preparation for initial inspection and testing
The candidate will be able to, given the information required:
Carry out the Initial Verification (inspection, testing and certification) of an installation to
BS 7671
Complete an Electrical Installation Certificate (as given in BS 7671 or Guidance Note 3),
for the installation, including the Schedule of Test Results
Carry out an inspection of installation components and complete the Schedule of
Inspections.
The candidate will be able to demonstrate knowledge of:
Requirements for Initial Verification
Information required to correctly conduct the initial inspection and testing of an
installation
Statutory and non-statutory requirements and relevant guidance materials which apply to
the activity of inspecting and testing of electrical installations
Need to comply with statutory and non-statutory requirements, guidance material for
particular locations and environments in which electrical installations are installed
Essential and optional information to be contained on the Electrical Installation
Certificate and Minor Electrical Installation Works Certificate and how the information is
recorded.

Inspection
Carry out the Initial Verification (inspection, testing and certification) of an installation to
BS 7671
Complete an Electrical Installation Certificate (as given in BS 7671 or Guidance Note 3),
for the installation in item 3, including the Schedule of Test Results
Carry out an inspection of installation components and complete the Schedule of
Inspections.
State the human senses that may need to be employed during the Initial Verification of
an installation
Refer to and select the items to be checked during the inspection process for given
systems and locations
State the requirements of the Electricity at Work Regulations for safe inspection and
testing in terms of those carrying out the work and those using the installation and the
building during the inspection and testing.
Testing
Select the correct instruments or functions and appropriate scales to carry out tests
Check and prove instruments and leads for safety and function
Carry out the Initial Verification (inspection, testing and certification) of an installation to
BS 7671
Complete an Electrical Installation Certificate (as given in BS 7671 or Guidance Note 3),
for the installation in item 3, including the Schedule of Test Results
Carry out an inspection of installation components and complete the Schedule of
Inspections.
State the need for instruments to be regularly checked and the need for compliance with
the requirements of BS 7671 (current edition) and HSE Guidance Note GS 38
List the correct instruments, functions and appropriate scale(s) to carry out each test and
explain the reasons for each choice
State the recommended sequence of tests covered by this unit and the reasons for that
sequence

Protective Conductors
State the requirements which need to be considered for protective conductors in terms of
a earthing conductors
b main protective bonding conductors
c supplementary equipotential bonding conductors
d circuit protective conductors
Describe the need for, and methods of, verifying the continuity of protective conductors
and the interpretation of results
State the relationship between conductor length, cross sectional area (csa) and resistance
State the effect of temperature on conductor resistance.
Ring Final Circuits
State the effect on conductor resistance when cables are connected in parallel
Describe the need for, and the method of verifying the continuity of, ring final circuit
conductors and the interpretation of results
State the relationship between conductor length and conductor resistance.
Insulation Resistance
Explain, by example, the effect on insulation resistance of
a cables connected in parallel
b variation in cable length
State the difference between measurements taken for insulation resistance and conductor
resistance, and the order of magnitude that would be expected in each case
State the preconditions required for the performance of insulation resistance testing in
terms of
a client consultation
b safety procedures and notices
State the precautions to be taken before testing insulation resistance in terms of
a isolation of circuits and equipment
b voltage sensitive equipment
c electronic components

Describe methods of testing insulation resistance
State the required test voltages and minimum values of insulation resistance for circuits
operating at various voltages
SELV
Describe the test to verify separation between SELV circuits and other circuits.
Special Installations and locations
State the requirements for locations containing baths or showers in terms of
a circuits
b equipment
c zones.
IP Code
State the appropriate degrees of protection required for given locations and environments
afforded within the IP classification BS EN 60529.
Polarity
State the reasons for tests to confirm correct polarity
Describe the methods of testing used to identify correct polarity
State the reasons for confirming correct polarity following initial energising of installations.
Earth Electrodes
State the instruments used for testing earth electrodes as
a Earth electrode resistance tester
b Earth fault loop impedance tester
Describe the method testing earth electrode resistance using an earth fault loop
impedance tester.
Earth Fault Loop Impedance
Describe the earth fault loop impedance paths for the following systems
a TN-S
b TN-C-S

c TT
Describe methods of determining earth fault loop impedance in terms of
a the tests used for measuring actual earth fault loop impedance
b methods of calculation of earth fault loop impedance from given data and measurement
of conductor impedance
Given maximum tabulated values of earth fault loop impedance, verify that measured
values are acceptable, taking into account conductor operating and ambient temperatures
Residual Current Devices (RCD)
Describe methods of testing the correct operation of an RCD, independent of in-built test
facilities
State the applications for various RCD ratings
State the requirements for RCD in series.
Prospective Fault Current
Describe prospective fault current in terms of
a prospective short-circuit current
b prospective earth fault current
State methods of determining prospective fault current
Describe the methods of measuring prospective fault current
Explain the importance of confirming that protective devices are appropriate for the
prospective fault current.
Verification of voltage drop
State the methods of evaluating voltage drop
Determine compliance with voltage drop from given criteria.

Practical Assessment Practical Assessment Requirements 2392-102 Inspection,
Testing and Certification – practical
This practical assessment element must be completed, in addition to 2392-101, for
candidates to gain a certificate.
The practical assessment consists of one assessment.
The test procedure should be completed within the time indicated. The candidate should
be continuously monitored during the test procedures.
Where candidates supply their own test instruments and/or tools, the assessor is
responsible for verifying the suitability of these for the tasks to be undertaken.
Test procedure
The candidate should be given
An Electrical Installation Certificate, the Schedule of Test Results and Schedule of
Inspections for the assessment
A selection of hand tools, where required, to carry out testing of the installation
A range of test instruments including those required to complete the tests.
The information contained within the candidate section of the 2392-102 Assessment
Guide.
Candidate identification and other relevant information should be completed on the
appropriate result sheet prior to the commencement of each test.
The candidate will be expected to record all relevant information and results for all circuits
on the appropriate documents.
The tests and performance criteria for assessment
The tests that must be completed and the detailed performance criteria the candidate must
meet in order to pass the test are provided in the Assessment Guide for Centres. A copy of
each set of performance criteria must be completed for each candidate.
Consideration should be given to the Electricity at Work Regulations throughout the
assessment process, and it should be made clear to the candidate that failure to observe
appropriate safe working practices will result in the assessment being stopped.