It depends on the supply arrangement and where the socket-outlet is installed.
If it's a single-phase supply with a Neutral and a Line conductor
Regulation 411.3.3 applies and a 30 mA RCD is required for socket-outlets rated upto and including 32 A. RCDs may also be required because of the cable route to the socket-outlet (e.g. Regulation 522.6.202) or because of a requirement of a Part 7 special location.
If it's Reduced Low Voltage (55-0-55 V from a safety isolating transformer) Regulation 411.3.3 applies for socket-outlets rated up to 32 A. It depends where the socket-outlet is, and other factors including whether RCDs are used for ADS. RCDs may be required if Regulation 522.6.202 applies to the circuit, or if RCDs are used for protection against fire, or as a result of Part 7 requirement (e.g. Regulation 705.422.7 or as above)
(Just in case anyone asks - if a Part 7 requirement for RCDs is numbered 7ab.411.x.y, then that modifies Regulation 411.x.y which is a requirement for ADS, not the reduced low voltage system, which would be numbered 7ab.418.x.y. Therefore Regulation 701.411.3.3 would not apply for a reduced low voltage system in a location containing a bath or shower, provided all the requirements for RLVS are met)
Edited as p[er later post, deletions in strikethrough, additions underlined
It depends on the supply arrangement and where the socket-outlet is installed.
If it's a single-phase supply with a Neutral and a Line conductor
Regulation 411.3.3 applies and a 30 mA RCD is required for socket-outlets rated upto and including 32 A. RCDs may also be required because of the cable route to the socket-outlet (e.g. Regulation 522.6.202) or because of a requirement of a Part 7 special location.
If it's Reduced Low Voltage (55-0-55 V from a safety isolating transformer) Regulation 411.3.3 applies for socket-outlets rated up to 32 A. It depends where the socket-outlet is, and other factors including whether RCDs are used for ADS. RCDs may be required if Regulation 522.6.202 applies to the circuit, or if RCDs are used for protection against fire, or as a result of Part 7 requirement (e.g. Regulation 705.422.7 or as above)
(Just in case anyone asks - if a Part 7 requirement for RCDs is numbered 7ab.411.x.y, then that modifies Regulation 411.x.y which is a requirement for ADS, not the reduced low voltage system, which would be numbered 7ab.418.x.y. Therefore Regulation 701.411.3.3 would not apply for a reduced low voltage system in a location containing a bath or shower, provided all the requirements for RLVS are met)
Edited as p[er later post, deletions in strikethrough, additions underlined
