By Geoffrey Stokes
This booklet offers an intensive, useful consultant to the Wiring laws BS 7671 : 2001. It gains in particular:
- worked layout examples
- extensive tabular fabric and checklists
- numerous illustrations
- particular recognition to the themes of inspection, checking out, verification, certification and reporting
- NICEIC specimen certificate and different forms
- guidance on specialized installations
The 3rd version has been up to date to take account of the 2001 amendments to the Wiring laws, together with revisions on:
- protection opposed to overcurrent
- isolation and switching
- zoning requisites for destinations containing a tub or shower
- construction website installations
- highway energy provides and road furnishings and gear
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Extra resources for A Practical Guide to the Wiring Regulations
Applies generally. Note: This listing is intended as a guide only to some of the statutory requirements and should not be regarded as exhaustive. 1 Electricity Supply Regulations 1988, as amended (ESR) The Electricity Supply Regulations 1988, as amended, which replaced the Electricity Supply Regulations 1937, are applicable to both public and private electricity supplies. The Regulations are intended to prevent danger to the public and livestock including domestic animals. The hazards envisaged are burns, electric shock, injury from mechanical movements and fire arising from the generation, transformation, transmission, supply and use of electricity.
9[15 + 7 + 12]) on the supplying distribution board. e. W/Un). Power factor for such load is normally at unity unless the heater convection is fan assisted, in which case account should be taken of the motor power factor. This is generally likely to be approaching unity for the whole appliance. g. off-peak heaters) and for floor warming installations, no allowance for diversity is permitted. Diversity for heating circuits will depend on the type of premises and in Table H2 of the IEE Guidance Note Selection and erection these are given as: .
Band II covers: . c. c. c. c. e. low voltage). ). c. is one of the sinusoidal or distorted sinusoidal waveform. , needs to be assessed because of its effect on impedance; the inductive reactance of a constituent part of a system increases and decreases in direct proportion to the frequency and conversely capacitive reactance varies in inverse proportion to the frequency. EDs are required, again under the Electricity Supply Regulations 1988, as amended, to maintain the frequency of public supplies to 50 Hz +1%.
A Practical Guide to the Wiring Regulations by Geoffrey Stokes