Some will be concealed and only take effect over a long period of time. Not all faults will be easily visible. As such, using the correct means to test and inspect material is vital. Either fitting the device i at the main supply point in accordance with It is most important that electrical contractors are aware of and fully understand these requirements.Unit 2 outcome 2 It is important that electricians are not just able to construct they should also be able to recognise faults and take action to help prevent them. Etci National Rules For Electrical Installations 4th Edition, New School College Books For Sale in Cork City Centre, Cork, Ireland for euros on.National Rules For Electrical Installations Etci. Please be mindful that a Periodic Inspection Report. It is recommended that electrical installations are inspected and tested periodically as appropriate to their use and environment to verify compliance with the National Rules for Electrical Installations ET101. Electrical installations can deteriorate with age and use. The fifth edition, I.S.10101, is published by the.ABOUT ETCI PIR-. On completion of this outcome the candidate will be able to: The Electro-Technical Council of Ireland, ETCI, published the first four editions of the rules, ET101.
list relevant sources of information to facilitate testing and inspection identify the purpose and conditions of periodic inspection Although the ETCI no longer operates, the 'National electrical code' installation rules (except marine work) of the National Board of Fire Underwriters for electric wiring and apparatus, as recommended. These give a comprehensive set of requirements for the engineering requirements for the installation of electrical at voltages of 1000 Volt AC and below. state the purpose of inspection and commissioning and the factors to be considered The Electro-Technical Council of Ireland ( ETCI) have produced a full set of rules for Electrical Installations. Etci National Rules For Electrical Ations How To Carry Outdescribe the requirements of testing and procedures for dealing with documentation and clients.The purpose of inspection and commissioning On completion of this topic area the candidate will be able to state the purpose of inspection and commissioning and the factors to be considered.Did you know? The requirements for periodic inspection and testing are given in BS 7671 Chapter 62All electrical items must be tested before finally being put into servicePre-commissioning – this involves a full inspection of the installation and the carrying out of all tests required before the installation is energised (continuity, polarity and insulation resistance).We inspect and commission material after the completion of work for three key reasons to ensure:Commissioning – includes all tests which require power to be available, e.g. explain the need to comply with test values describe how to carry out common tests explain the importance of test instruments, calibration and documentary evidence Tests will also need to be carried out in the event of minor alterations or additions being made to existing installations.Remember Many industrial processes have very complicated control systems. Earthed equipotential bonding and automatic disconnection of supplyThe presence of any sensitive electronic devices.It is important to remember that periodic inspection and testing must be carried out on installations to ensure that the installation has not deteriorated and still meets all requirements. The tasks involved in checking compliance with project specification are as follows.In order to make sure that this work is carried out satisfactorily the inspection and test procedure must be carefully planned and carried out and the results correctly documented.Compliance with the project specificationThe maximum demand of the installation expressed in amperes per phaseThe number and type of live conductors at the point of supplyThe type of earthing arrangements used by the installation, including details of equipotential bonding arrangementsThe type and composition of circuits, including points of utilisation, number and size of conductors and types of cable installed (this should also include details of the ‘reference installation method’ used)The location and description of protective devices (fuses, circuit breakers etc.)Details of the method selected to prevent danger from shock in the event of an earth fault, e.g. This is in order to check that the finished installation matches the requirements laid out by the customer and is fit for use in the environment where it will be used. BS 7671 requires that the following information be provided to the person carrying out the inspection and test of an installation:Did you know? For commercial or industrial installations, the requirements of the Electricity Supply Regulations 1988 and the Electricity at Work Regulations 1989, both of which are statutory instruments, should also be taken into account324 EI449370_NVQ3_C08_P323_394.indd 324-325Once the installation is complete, we need to test it against the original specification for the work. In carrying out such inspection and test procedures, precautions must be taken to ensure no danger is caused to any person or livestock and to avoid damage to property and installed equipment. This will also confirm that the installation works and, more importantly, will work under fault conditions after all, it is under fault conditions that lives and property will be at risk. As such, commissioning includes the functional testing of all equipment, isolation, switching, protective devices and circuit arrangements.Safe to use The final act of the commissioning process is to ensure the safe and correct operation of all circuits and equipment which have been installed, and that the customer’s requirements have been met. The commissioning process is intended to confirm that the installation complies with the designer’s requirements. This means that all other persons working on site at the time of the energising must be informed that power will be applied to the installation, so that all precautions can be taken to prevent danger. Erection of warning notices and barriers where appropriate.The person carrying out the tests should ensure that all instruments being used conform to the appropriate British Standard, i.e. ●The person carrying out the tests must have a thorough understanding of the equipment being used and its rating.The person carrying out the tests must ensure that all safety procedures are being followed, e.g. When using test instruments the following points will help to achieve a safe working environment. Health and Safety Executive Guidance Note GS38 (Electrical test equipment for use by electricians) details relevant safety procedures and should be observed in full. If you do not do this, test results could be voidOther detectors use two or more independent indicating systems (one of which may be audible) and limit energy input to the detector by the circuitry used. It is the responsibility of the inspector to: ●Ensure no danger occurs to people, property and livestockConfirm that test and inspection results comply with the requirements of BS 7671 and the designer’s requirementsExpress an opinion as to the condition of the installation and recommend remedial worksMake immediate recommendations, in the event of a dangerous situation, to the client to isolate the defective part.You must ensure that your test equipment is calibrated this indicates that the instrument is working properly and providing accurate readings. Any person undertaking these duties must be skilled and experienced and have sufficient knowledge of the type of installation. Where appropriate the requirements of GS38 should be observed, including the use of fused test leads.Competence of the inspector A final consideration when carrying out inspection and tests is the competence of the inspector. If the live terminals of such an instrument are touched a shock will be received.The person carrying out the tests should check that test leads including probes and clips are in good condition, are clean and have no cracked or broken insulation. Insulation resistance testers. These types of detector do not require additional current-limiting resistors or fuses to be fitted, provided that they are made to an acceptable standard and the contact electrodes are shrouded. The interconnecting lead and second test probes are not detachable components. The detectors are also provided with in-built test features to check the functioning of the detector before and after use. This limitation is usually provided by a combination of the circuit design, using the concept of protective impedance, and current-limiting resistors built into the test probes. A detector unit with an integral test probe, an interconnecting lead and a second test probe.Both these detectors are designed and constructed to limit the current and energy that can flow into the detector.
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