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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

  1. How many zones are defined in a bathroom containing a fixed bath under BS 7671?

    Answer: Three: Zone 0, Zone 1 and Zone 2 (plus an area outside the zones)

    BS 7671 Section 701 defines Zone 0 (inside the bath/shower tray), Zone 1 (above the bath/tray up to 2.25 m), and Zone 2 (outside Zone 1 extending 0.6 m horizontally), plus an area outside all zones.

  2. What is Zone 0 in a bathroom?

    Answer: The interior of the bath or shower tray itself — the area always in contact with water

    Zone 0 is the interior of the bath, shower tray or shower basin — the zone that is always filled with or in direct contact with water, requiring the highest level of ingress protection (IPX7 or IPX8).

  3. What minimum IP rating is required for electrical equipment in Zone 0?

    Answer: IPX7 (protection against temporary immersion)

    Equipment installed in Zone 0 must have a minimum rating of IPX7 (capable of withstanding temporary immersion), as it is in direct contact with water; only SELV at 12 V AC or 30 V DC max is permitted in this zone.

  4. What is Zone 1 in a bathroom with a fixed bath?

    Answer: The area above the bath tub to a height of 2.25 m above the floor, extending over the full width and length of the bath

    Zone 1 extends vertically from the bottom of the bath (or shower tray) up to 2.25 m above the finished floor level, over the horizontal extent of the bath or shower area.

  5. What electrical equipment is permitted in Zone 1 of a bathroom?

    Answer: Only equipment with a minimum IPX4 rating, supplied at SELV, or shower units and bath heaters rated for Zone 1 use

    In Zone 1, only equipment specifically designed for the zone (rated IPX4 minimum) is permitted — SELV shaving sockets, shower units, bath heaters and whirlpool units designed for Zone 1 installation are allowed.

  6. What is Zone 2 in a bathroom?

    Answer: The area extending 0.6 m horizontally from the edge of Zone 1 and up to 2.25 m in height

    Zone 2 extends 0.6 m horizontally beyond the boundary of Zone 1 (or the shower tray/enclosure) and up to 2.25 m in height, representing the area where water splashing is likely but immersion is not.