Bathroom Zone Regulations Flashcards
6 cards from real PART P practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Bathroom Zone Regulations flashcards as text
Are standard socket outlets permitted in Zone 2 of a bathroom?
Answer: No — socket outlets are not permitted in Zone 1 or Zone 2; only SELV shaving sockets (BS EN 61558-2-5) may be installed in Zone 2
Standard socket outlets are not permitted in Zones 0, 1 or 2 of a bathroom. Only specially designed SELV shaving units (conforming to BS EN 61558-2-5) containing an isolating transformer may be installed in Zone 2.
Where is the closest permitted location for a standard socket outlet in a bathroom?
Answer: Outside Zone 2 (more than 0.6 m from the boundary of Zone 1) and where it cannot be reached from the bath or shower
Standard socket outlets must be installed outside Zone 2, at a safe distance from the bath or shower (more than 0.6 m from Zone 1 boundary), where they cannot reasonably be reached by a person using the bath.
What type of shaving socket is permitted within Zone 2 of a bathroom?
Answer: A shaver supply unit conforming to BS EN 61558-2-5, incorporating an isolating transformer providing SELV
BS EN 61558-2-5 shaver supply units contain an isolating transformer and comply with specific safety requirements for wet areas; they provide SELV, preventing dangerous shock even if the supply becomes wet.
What wiring methods are permitted in bathroom zones?
Answer: Cables concealed in walls or ceilings are permitted (if correctly zoned); surface wiring should be in appropriate conduit with connections in IP44 or higher-rated enclosures
In bathroom zones, wiring should ideally be concealed or if surface-run should be in appropriate systems; all accessories and enclosures within the zones must have the minimum IP rating required for that zone.
Can a pull-cord switch be installed inside a bathroom zone?
Answer: Yes — a ceiling-mounted pull-cord switch with appropriate IP rating (minimum IPX4 in Zone 1) may be installed in bathroom zones
Ceiling-mounted pull-cord switches are commonly installed in bathroom zones; they must have the minimum IP rating required for the specific zone in which they are located (minimum IPX4 in Zone 1).
What is the purpose of the SELV requirement in bathroom Zone 0?
Answer: To limit the maximum voltage to 12 V AC so that even if the supply becomes wet, the shock current through the body is below the electrocution threshold
12 V SELV in Zone 0 limits the maximum available voltage to well below 50 V (the conventional shock threshold), so even if a person in the bath contacts the supply there is insufficient voltage to drive a lethal current through the body.