This British Standard provides recommendations for management, design and operation of temporary electrical systems using low voltage a.c. electricity, for entertainment and related purposes.

Covers systems operating at low voltage and supply equipment normally operating at 230 V a.c. or 400 V a.c. 50 Hz.

BS 7909:2011 gives recommendations for the provision of a safe and suitable temporary electrical system for an event and the duties and work to implement this.

First published as BS 5550-7-5-1:1981. First published as BS 7909 December 1998. 2nd edition November 2008. 3rd edition, August 2011. Supersedes BS 7909:2008. Came into effect 31 August 2011

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