By Institution of Electrical Engineers
A chain of steering Notes has been issued, every one of which enlarges upon and amplifies the actual necessities of part of BS 7671:2001 (IEE Wiring laws, sixteenth Edition). each one of those courses is broadly cross-referenced to the laws hence offering handy and prepared entry. a few counsel Notes include info now not integrated within the sixteenth version yet which was once integrated in prior variants of the IEE Wiring rules. all of the courses were up to date to align with BS 7671: 2001.
Read or Download Guidance Note 2: Isolation and Switching (IEE Guidence Notes) (No 2) PDF
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Extra resources for Guidance Note 2: Isolation and Switching (IEE Guidence Notes) (No 2)
CD GN2 Isolation & Switching, inc 16th Edition 2001 Amd No 1 460-01-06 460-01-06 537-02-05 611-03-01 551-06-01 45 551-07 Where a generator is intended to run in parallel with the public supply a means of isolation must be provided to disconnect the operator from the public supply network. This means of isolation must be accessible to the supplier at all times. 554-02-01 HV electric signs and discharge tube installations All high voltage electric signs and discharge tube installations must comply with BS 559.
The size of the installation and the need for security of supply dictate the best arrangement. Where there is more than one such device at the origin of the installation, or more than one supply is provided, clear and unambiguous identification is crucially important. Regulation 19 of the Provision and Use of Work Equipment Regulations 1998 and Regulation 12 of the Electricity at Work Regulations 1989 require that where appropriate, and to prevent danger, suitable means shall be provided to isolate equipment and machinery from all sources of supply.
As an exception to the above requirements, certain circuits may remain connected to their supply sources in order, for example, to hold parts, protect information, light interiors, etc. In this case, special steps must be taken to ensure operator safety. 5 Isolation at the origin of the installation 460 461 The main switch or circuit-breaker required by Regulation 460-01-02 is a means of isolation and switching for the whole installation. 460-01-02 The requirements of this regulation and the associated regulations are illustrated in the following drawings.