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027888            Inspection, Testing and                  Certification                        of             Electrical ...
City & Guilds 2391-10                                                                                                 Syno...
City & Guilds 2391-10                                                                          SynopsisRationale for City ...
City & Guilds 2391-10                                                                         SynopsisAdministrative Arran...
City & Guilds 2391-10                                                                         SynopsisComplaints and Appea...
City & Guilds 2391-10                                                                      Synopsis2. Underpinning Knowled...
City & Guilds 2391-10                                                                       Synopsis2.3 TestingInstruments...
City & Guilds 2391-10                                                                       Synopsis2.3.12 State the requi...
City & Guilds 2391-10                                                                      Synopsis2.3.23 Describe methods...
City & Guilds 2391-10                                                                           Synopsis                  ...
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City & guilds 2391 courses and training

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Inspection, Testing and Certification of Electrical Installations

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City & guilds 2391 courses and training

  1. 1. 027888 Inspection, Testing and Certification of Electrical Installations Scheme 2391-10 - Course SynopsisIssue 3.1 Prepared by Trans-Euro Engineering Services Ltd © Trans-Euro Engineering Services Ltd - Consultancy, Training & Power Quality www.trans-euro.co.uk +44 (0) 1327 353 800
  2. 2. City & Guilds 2391-10 Synopsis ContentsRationale for City & Guilds 2391-10 Three-Day Course..............................................3Course Framework......................................................................................................3Administrative Arrangements ......................................................................................4Safety Warning............................................................................................................4Equal Opportunities.....................................................................................................4Trans-Euro Staff ..........................................................................................................4Complaints and Appeals .............................................................................................5Disclaimer....................................................................................................................5Data Protection............................................................................................................5Syllabus.......................................................................................................................51. Practical..................................................................................................................52. Underpinning Knowledge .......................................................................................62.1 Preparation for inspection and testing: .................................................................62.2 Inspection .............................................................................................................62.3 Testing..................................................................................................................7Assessments ...............................................................................................................9Exam booking time....................................................................................................10Publication of results .................................................................................................10Version: Issue 3.1 Page 2 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800
  3. 3. City & Guilds 2391-10 SynopsisRationale for City & Guilds 2391-10 Three-Day CourseThe City & Guilds 2391-10 course for electricians provides a comprehensive review of thelatest edition of the wiring regulations (BS7671:2008, 17th Edition) with practicaldemonstrations.This qualification is intended for experienced personnel working in the electrical industry.Although City & Guilds does not state formal candidate entry requirements, the qualificationis not intended for non-qualified electricians and/or those who do not have experience ininspecting, testing and certifying electrical installations.Candidates without this experience should seriously consider undertaking the City & GuildsLevel 2 Certificate in Fundamental Inspection, Testing and Initial Verification, 2392-10, aswell as obtaining industry experience. It is also strongly recommended that candidates haveachieved either the City & Guilds 2382 Certificate in The Requirements for ElectricalInstallations, BS 7671:2008, or similar qualifications where candidates have demonstratedknowledge and understanding of the 17th edition wiring regulations.The 2½-hour written exam is set and marked by City & Guilds. It will be run by Trans-Eurofrom 18:00 onwards on a date set by City & Guilds.The 4-hour practical exam is conducted one-to-one between the Assessor and eachcandidate, at a time to be arranged when mutually convenient. The format and content of thisis set by City & Guilds. It can be undertaken before or after the written exam.Candidates are expected to bring their own, up-to-date, copies of: • The IET On-Site Guide. • BS7671 (the “Wiring Regs”). • IET Guidance Note 3, Inspection & Testing.Although there will be tools and test equipment available, it is preferable that candidatesbring their own as well.Course FrameworkThe course is divided into 4 basic sections: • Legislation. • Overview of BS7671. • Inspection & Testing Theory. • Practical demonstrations.Opportunities will be provided during the course, and with homework, to practise examtechnique.The major documents that need to be studied thoroughly are BS 7671 and the IET GuidanceNote 3, supported by the IET On-Site Guide. These documents will be constantly referred toand used throughout the course. It cannot be stressed too highly that candidatesrequire a thorough working knowledge of these documents in order to pass theclosed-book exam and the practical assessment.Version: Issue 3.1 Page 3 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800
  4. 4. City & Guilds 2391-10 SynopsisAdministrative ArrangementsThe course, the written exam and the practical assessment are normally held at Trans-Euro’spremises at 186 Watling Street, Towcester, but the location can be at client premises by priorarrangement.Normal times of attendance are from 09:00 to 17:00, with lunch from 12:15 to 13:00.Refreshment breaks are taken as necessary during the mornings and afternoons.Towcester is centrally placed and is conveniently accessible by road, rail and air.Accommodation and parking are easily arranged. Full details are available from the CourseSecretary.Participants with special needs should advise the Course Secretary 21 days before the startof the course.Safety WarningNote that the Trans-Euro emergency assembly area is the Magistrate’s Court car park,across the main A5 Watling Street. This is a busy trunk road therefore extreme caution isrequired.Equal OpportunitiesTrans-Euro supports equal opportunities in education, training and employment, and takespositive action to achieve this.We are committed to giving delegates who want to gain an award an equal opportunity ofachieving it irrespective of age, gender, sexual orientation, race, religion, physical abilities,learning capabilities, eyesight, hearing etc in line with current UK legislation and EUdirectives.Delegates with impairment(s) should make their requirements known in advance of bookingcourses in order to provide time for specialised staff external to the Centre to be madeavailable to assist and for additional exam time to be sought where appropriate, eg fordyslexic or deaf delegates.The formal, detailed, Trans-Euro Equal Opportunities Policy statement is available onrequest, held by the Course Secretary.Trans-Euro StaffThe following Trans-Euro staff are involved with running the 2391-10 course: • Course Tutor • Course Assessor • Invigilator • Course Secretary • Internal Verifier • Quality Assurance CoordinatorVersion: Issue 3.1 Page 4 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800
  5. 5. City & Guilds 2391-10 SynopsisComplaints and AppealsAny complaint or appeal should be made in the first instance direct to the Trans-Euroemployee involved. It should be escalated to the assessor or internal verifier/qualityassurance coordinator if satisfaction is not obtained. City & Guilds will not accept complaintsor appeals made directly to them unless this process has been exhausted. The full companyAppeals Policy is available on request from the Centre Secretary.DisclaimerAchieving the full C&G 2391-10 qualification does not provide any guarantee ofworkmanship, performance, quality or status of the candidate during future endeavours suchas plying his/her trade, applying for membership/enrolment of trade bodies/institutions, or forjob seeking etcData ProtectionAny personal information Trans-Euro holds will only be used in the context of the businesswe conduct with the candidate. This information comprises the candidate’s name, date ofbirth, sex, employer and contact details.The formal, detailed, Trans-Euro Data Protection Policy statement is available on request,held by the Company Secretary.SyllabusThe following objectives indicate the level of skills and knowledge required for thisassessment.The assessments assume the following abilities: • The application of standard electrical formulae. • The ability to define all the standard terms in BS 7671. • The use of a calculator, or other means, to carry out relevant calculations.1. Practical1.1 Practical Competence:1.1.1 Select correct instruments or settings and appropriate scales to carry out tests.1.1.2 Check and prove instruments and leads for safety and function.1.1.3 Given the information required, carry out an inspection and test of an installation tothe requirements of the current edition of BS 7671.1.1.4 Complete a Periodic Inspection report, as given in BS7671, including two Schedulesof Test Results.1.1.5 Carry out an inspection of installation components and record deviations andcomplete a Schedule of Inspections.Version: Issue 3.1 Page 5 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800
  6. 6. City & Guilds 2391-10 Synopsis2. Underpinning Knowledge2.1 Preparation for inspection and testing:2.1.1 State the need for and purpose of initial verification and periodic inspection andtesting.2.1.2 State the information required to correctly conduct the inspection and testing of aninstallation.2.1.3 State the statutory and non-statutory requirements and guidance material forparticular locations and environments in which electrical installations are installed.2.1.4 State the need to comply with statutory and non-statutory requirements and guidancematerial for particular locations and environments in which electrical installations areinstalled.2.1.5 State the essential and optional information to be contained on Certificates andPeriodic Inspection Reports and how the information is recorded on all certificates asindicated in Guidance Note 3.2.2 Inspection2.2.1 State the human senses that may need to be employed during the inspection of aninstallation.2.2.2 Refer to and select the items to be checked during the inspection process for givensystems and locations as detailed in BS 7671.2.2.3 State the particular requirements for a periodic inspection of an electrical installationas defined in BS 7671.2.2.4 State the need to establish the extent and limitation of a Periodic Inspection Report,with the client and any relevant third parties, prior to commencing the inspection and theneed to record these details on the Periodic Inspection Report.2.2.5 State the requirements of the Electricity at Work Regulations for safe inspection andtesting in terms of those: a. Carrying out the work. b. Using the installation and the building during the inspection and test.Version: Issue 3.1 Page 6 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800
  7. 7. City & Guilds 2391-10 Synopsis2.3 TestingInstruments2.3.1 State the need for instruments to be regularly checked and the need for theircompliance with the requirements of BS 7671 and HSE document GS 38.2.3.2 List the correct instruments and appropriate scale to carry out each test and explainthe reasons for each choice.Sequence2.3.3 State the recommended sequence of test and the reasons for that sequence.Protective Conductors2.3.4 State the requirements which need to be considered for protective conductors interms of: a. Earthing conductors. b. Main protective bonding conductors. c. Supplementary protective bonding conductors. d. Circuit protective conductors.2.3.5 Describe the need for and methods of verifying the continuity of protective conductorsand the interpretation of results.2.3.5.1 State the relationship between conductor length, csa and resistance2.3.5.2 State the effect of temperature on a conductorRing Circuits2.3.6 Describe the need for and methods of verifying the continuity of ring final circuitconductors and the interpretation of results.2.3.6.1State the effect on measured resistance when cables are connected in parallelInsulation Resistance2.3.7 Explain, by example, the effect on insulation resistance of: a. Cables connected in parallel. b. Variation in cable length.2.3.8 Compare the differences between measurements taken for insulation resistance andconductor resistance, stating the order of magnitude that would be expected in each case.2.3.9 State the preconditions required for the performance of insulation testing.2.3.10 State the precautions to be taken before testing insulation resistance.2.3.11 Describe the methods of testing insulation resistance.Version: Issue 3.1 Page 7 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800
  8. 8. City & Guilds 2391-10 Synopsis2.3.12 State the required test voltages and minimum values of insulation resistance forcircuits operating at various voltages.2.3.13 State the particular requirements for insulation resistance testing of circuitsincorporating surge protection devices (SPDs) or sensitive electronic devices, to includedisconnection and the test voltage to be applied where disconnection cannot be achieved.Penetration and Flashover2.3.14 State the requirements for penetration tests and flashover tests on site appliedinsulation.Electrical Separation2.3.15 Describe the tests to verify the electrical separation of SELV circuits.2.3.16 State the particular requirements for protection by electrical separation (NOT SELV).Special Installations and Locations2.3.17 Describe the requirements for circuits in prescribed special installations and locationsby: a. Identifying the installations and locations to which special requirements apply. b. Demonstrating the ability to make reference to the appropriate requirements in each case. c. Identifying the requirements in relation to specific areas and installations from given information.IP Code2.3.18 State the appropriate minimum degree of protection required for given applicationswithin the IP classification BS EN 60529.Polarity2.3.19 Describe the need for and methods of testing used to identify correct polarity.Earth Electrodes2.3.20 Describe methods of measuring earth electrode impedance and the interpretation ofresults.2.3.21 Differentiate between the requirements for testing of earth electrodes for RCDprotected TT systems and electrodes for transformers and generators.Earth Fault Loop Impedance2.3.22 Describe the earth fault loop impedance paths for the following systems: a. TN-S. b. TN-C-S. c. TT.Version: Issue 3.1 Page 8 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800
  9. 9. City & Guilds 2391-10 Synopsis2.3.23 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.2.3.24 Given maximum tabulated values of earth fault loop impedance, verify thatmeasured values are acceptable, taking into account conductor operating and ambienttemperatures.Residual Current Devices (RCCBs/RCBOs)2.3.25 Describe methods of testing the correct operation of residual current devices,independent of in-built test facilities.2.3.25.1 State the applications for various RCD ratings.Prospective Fault Current2.3.26 Describe methods of determining prospective fault current in terms of: a. Prospective short circuit current. b. Prospective earth fault current.2.3.27 Explain the importance of selecting protective devices appropriate to the prospectivefault current.Phase Sequence2.3.28 Describe the requirements for checking phase sequence in terms of a. The purpose of checking correct phase sequence b. Test methods used to check phase rotationVoltage Drop2.3.29 Describe the methods of verifying voltage drop compliance with BS 7671 in terms ofmeasuring circuit impedance and calculation.AssessmentsThe assessment questions in the evening written exam will seek to examine the objectiveslisted under the syllabus topic headings with the percentage weightings shown below:Version: Issue 3.1 Page 9 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800
  10. 10. City & Guilds 2391-10 Synopsis Syllabus topic No. of Weighting (%) questions Section A 2.1 - Preparation for 3 6% inspection and testing 2.2 - Inspection 2 4% 2.3 - Testing 15 30% TOTAL, Section A 20 40% Section B Whole syllabus 6 60% TOTAL, Sections A & B 26 100%Exam booking timeTo avoid late entry fees, candidates should book 7 weeks before the exam. City & Guildsnormally arrange an exam in February, March, June, July, August, October and December.Publication of resultsExam results are normally published within 8 weeks.Appeals ProcedureA formal appeals procedure is available should a candidate wish to complain, object orchallenge any matter arising from this course or the exam. Anyone wishing to use thisappeals procedure should contact the Trans-Euro Quality Assurance Coordinator.To obtain independent, informal advice before escalating to C&G HQ, our City & GuildsExternal Verifier contact details are: • Tony Massey • email: tony.massey@tesco.net • phone: 01480 890 538Data ProtectionAny personal information Trans-Euro holds will only be used in the context of the businesswe conduct with the candidate. This information comprises the candidate’s name, date ofbirth, sex, employer and contact details.The formal, detailed, Trans-Euro Data Protection Policy statement is available on request,held by the Company Secretary.Version: Issue 3.1 Page 10 of 10 © Trans-Euro Engineering Services Ltd. Tel +44 (0) 1327 353800

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