By Geoffrey Stokes, John Bradley
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Additional info for A Practical Guide to the Wiring Regulations (2009): 17th Edition IEE Wiring Regulations (BS 7671:2008), 4th Edition
See row E1 of this table. Technical Handbooks provide guidance on achieving the standards set in the Building (Scotland) Regulations 2004 and are available in two volumes, for Domestic buildings and for Non-domestic buildings, from Scottish Building Standards. This listing is intended as a guide only to some of the statutory requirements and should not be regarded as exhaustive. Technical Handbooks C1 Electricity, the law, standards and codes of practice 11 12 A Practical Guide to The Wiring Regulations • mechanical movement of electrically actuated equipment, in so far as such injury is intended to be prevented by electrical emergency switching or by electrical switching for mechanical maintenance of nonelectrical parts of such equipment; • power supply interruptions and/or interruption of safety services; • arcing, likely to cause blinding effects, excessive pressure and/or toxic gases.
Applies generally in all places where a work activity is undertaken. Applies to all installations that obtain their supply from the public network. Part VII deals with supply to consumers’ installations. Failure to comply with the fundamental requirements for safety (Chapter 13 of BS 7671) may result in the distributor discontinuing supply (See Regulation 26 of ESQCR). Where the supply is protective multiple earthing (PME), the consumer must comply with ESQCR particularly as regards main protective bonding.
E. maximum demand). In load assessments, certain assumptions have to be made with regard to actual current drawn by equipment. Fixed loads are easy, but this is not so for socket-outlet circuits, which may have a theoretical load many times that which is likely to be drawn in service. 99 kW at 230 V (13 A × 230 V), giving a total circuit current of 156 A (12 × 13 A). Clearly, such a scenario is not likely to occur in the real world, and the current likely to be drawn in this case must be based on all the known information related to usage of the circuit and the loads of portable and ﬁxed equipment connected to it (the maximum permitted sustained load to be drawn by this circuit would, of course, be 32 A).
A Practical Guide to the Wiring Regulations (2009): 17th Edition IEE Wiring Regulations (BS 7671:2008), 4th Edition by Geoffrey Stokes, John Bradley