By Brian Scaddan
"Get quick entry to the entire phrases, words and abbreviations you will definitely stumble upon whereas learning or operating within the electric undefined. Entries are defined intimately with diagrams and illustrations used to provide an explanation for advanced themes. this is often an imperative source for college students enrolled in NVQ Technical certificate, urban & advisor Diplomas and for plenty of others operating and learning within the construction undefined, making it an amazing better half to any electric installations textbook"--P.  of cover. Read more...
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Additional resources for Dictionary of electrical installation work: illustrated dictionary: a practical A-Z guide
Such losses, together with I2 R losses, are referred to as ‘copper losses’, and they reduce efficiency. Fig. 11 45 I I I This is the general symbol for current, in amperes. g. 4 secs). Ib (see Design current) IEC (International Electrotechnical Commission) This is an organization that publishes and assesses conformity to standards for electrical, electronic and related technologies. IET The Institute of Engineering and Technology, formerly the IEE. If (see Fault current) IK codes (for impact) These are a set of alpha-numeric codes denoting protection against severity of impact (Fig.
57 Marinas (cont…) • Underground cables, unless provided with additional mechanical protection, should be at a suitable depth to prevent damage; 500 mm is considered to be a minimum • Socket outlets should be: 1. To BS EN 60309-2, up to 63A, BS EN 60309-1, above 63A and IP44 rated 2. One per pleasure craft or houseboat 3. Individually protected against overcurrent 4. Individually protected by a 30mA or less RCD 5. Not less than 1m above the highest water level. This may be reduced to 300 m for floating pontoons or walkways only, provided that the effects of splashing are taken into account.
Typical of a large percentage of the building stock in the UK. 30 Earthing systems (cont…) TN-C-S where the DNOs supply of earth and neutral are combined in one conductor (PEN conductor) and the consumers’ installation of earth and neutral are separate. The DNOs part is known as protective multiple earthing PME because their PEN conductor is earthed at many points along it length in an attempt to keep it at zero volts. PEN stands for protective earthed neutral (see also Protective multiple earthing).