Studio Matrx Monthly · Volume 1 · Issue 2 · July 2026
Amogh N P
 In loving memory of Amogh N P — Architect · Designer · Visionary 
Bathroom Electrical Schedule (India): A Point-by-Point Wiring Table with Heights, Loads, Circuits & IP Zones
Bathrooms

Bathroom Electrical Schedule (India): A Point-by-Point Wiring Table with Heights, Loads, Circuits & IP Zones

A working electrical points schedule an Indian architect, MEP consultant or site engineer hands to the electrician — every point with its height from FFL, load, circuit, IP zone and 30 mA RCD protection, so the bathroom is wired correctly, safely and to code.

9 min readAmogh N P12 July 2026Last verified July 2026
An Indian bathroom wall marked out for electrical points before tiling, with a geyser bracket, an exhaust-fan cutout, a mirror-light position and switch boxes chalked at their heights

An electrician wires what the drawing tells them, and if the drawing is vague the geyser point lands over the shower, the switch sits inside the splash zone, and nobody remembers whether the whole room is on a 30 mA RCD. This document fixes that. It is the electrical points schedule you fill in at the layout stage and hand to site — a single table that fixes every point's height, load, circuit and IP zone before the wall is chased and tiled. It sits alongside the bathroom design checklist and the bathroom plumbing schedule, and it is the on-site companion to the bathroom electrical code guide.

Copy the tables below into your BOQ or MEP sheet and adapt the rows to the actual room. Every figure here is indicative — the right height and load depend on the fittings you have actually specified, the geyser rating, the ceiling height and your city's supply — so verify each line against the product, the drawing and a licensed electrical contractor before it is issued for construction.

The two rules that never bend in an Indian bathroom: every circuit serving the room is on a 30 mA RCD (RCBO or RCCB), and every switch and socket sits outside the wet zone or is IP-rated for where it is. Get those two right and most of the danger is gone.

How to use this document

The schedule is filled in during design, verified at first fix, and signed off at testing. Here is the sequence and who owns each step.

StageWhenWho fills it inWhat they confirm
Draft scheduleLayout / GFC stageArchitect or MEP consultantEvery point located, height and IP zone assigned
Load & circuit checkBefore wiringElectrical contractorLoads add up, circuits sized, RCD chosen
First-fix markingBefore tilingSite electrician + engineerBoxes chalked at correct FFL heights, conduit run
Testing & sign-offBefore handoverContractor + client repRCD trips at 30 mA, earthing continuity, insulation

Fill the point schedule first, because heights and IP zones drive where the conduit runs and which points must be moved out of Zone 1 before the tiler arrives. FFL means finished floor level — every height is measured from the final tiled floor, not the slab, so allow for screed and tile thickness (typically 50–75 mm) when you set out.

The point schedule — the deliverable

This is the core table. One row per electrical point, with everything the electrician needs. The example rows are a typical Indian family bathroom with a storage geyser, an exhaust fan, a mirror light and a vanity; add, delete or renumber rows to match your room.

PointDeviceHeight from FFL (mm)LoadCircuitIP zoneProtectionNotes
E1Storage geyser (15–25 L)1800–2000 to point2000–3000 W · ~9–13 ADedicated 20 A radial, 2.5–4 mm²Zone 120 A DP RCBO 30 mADP isolator switch outside door; point above splash, cable dropped to unit
E2Exhaust fanCeiling / 2100+ on wall20–40 W · <1 ALights/vent circuit, 1.5 mm²Zone 130 A RCD (shared)Switched outside wet zone or with light; IPX4 rated fan
E3Mirror / vanity light1800–2000 (above mirror)8–20 W LEDLighting circuit, 1.5 mm²Zone 230 mA RCD (shared)IP44 minimum near basin; sealed for splash
E4General ceiling lightCeiling9–15 W LEDLighting circuit, 1.5 mm²Zone 2 / outside30 mA RCD (shared)IP44 if within 0.6 m of shower spray
E5Shaver socket1200–130020 VA isolatedLighting circuit, 1.5 mm²Zone 2Built-in isolating transformerOnly BS EN 61558 shaver unit permitted in Zone 2
E6Light + fan switch1200–1400Outside room (dry)30 mA RCD (shared)Switch outside door or on dry wall; never in Zone 1/2
E7Heated towel rail (optional)300 to point, 600–900 rail60–150 WDedicated or lights, 1.5 mm²Zone 230 mA RCD (shared)Fused spur, IPX4; switch outside wet zone
E8Smart WC / bidet point (optional)100–150 behind WC500–1400 W · ~2–6 ADedicated 16 A, 2.5 mm²Zone 216 A RCBO 30 mAIP-rated back-box; keep spur accessible for isolation

Read the columns together. The height stops the point landing in a splash line; the IP zone decides whether the fitting is even allowed there; the circuit and load decide the cable size and MCB rating; and the protection column is where the 30 mA RCD lives. The geyser earns a dedicated circuit because it is the biggest continuous load in the room — never hang it off the lighting or the bedroom socket circuit.

Standard mounting heights

Heights are the single most-asked question on site, so give the electrician a clean reference. These are typical Indian setting-out heights from FFL; adjust for a taller family, a wall-hung WC, or a client brief.

ElementHeight from FFL (mm)Note
Light / fan switch (outside wet zone)1200–1400On the dry wall or just outside the door
Geyser electrical point1800–2000Above and clear of the shower splash line
Geyser DP isolator switch1350–1500Outside the door / dry zone, reachable
Mirror / vanity light1800–2000Above the mirror; align with mirror top
Shaver socket1200–1300Beside the mirror, out of direct splash
Exhaust fan (wall type)2100+ / ceilingHigh on the wall opposite the door, or ceiling
Smart WC / bidet point100–150Low, behind the pan, on an accessible spur
Heated towel rail point300 to pointConcealed behind the rail bracket

IP-zone reference

The whole safety logic of a wet room is the zone system: the closer to water, the higher the ingress protection the fitting must have, and the more restricted what is allowed at all. Use this to check every row of the point schedule.

ZoneWhere it isWhat is allowedMinimum IP
Zone 0Inside the bath or shower trayOnly 12 V SELV fittings rated for immersionIPX7
Zone 1Above bath/shower to 2.25 m, over the trayFixed IP-rated fittings only: shower light, IPX4 fan, geyser point; no switches/socketsIPX4 (IPX5 if jet-cleaned)
Zone 20.6 m beyond Zone 1, around the basinIP44 lights, IP44 fittings, shaver units (BS EN 61558); no general socketsIPX4
Outside zonesThe dry rest of the roomSwitches, general points — but still on the 30 mA RCDAs specified
IP zones across the wet wall ZONE 0 In the tray 12V SELV only IPX7 ZONE 1 To 2.25 m Fixed fittings: fan, geyser pt IPX4 · no switch ZONE 2 0.6 m beyond IP44 lights, shaver unit no sockets OUTSIDE · dry · switches Every zone still sits behind one 30 mA RCD.

Protection, earthing and circuits

Two safety systems carry the room. The first is the 30 mA RCD — a residual-current device that cuts power in milliseconds if current leaks to earth, which in a wet room is the difference between a shock and a fatality. Put every bathroom circuit behind one, either as a RCBO per circuit (best — a fault trips only that circuit) or a shared RCCB on the group. The geyser and any smart-WC point deserve their own RCBO so a nuisance trip does not kill the lights.

The second is earthing to IS 3043 — the code of practice for earthing. Every metal fitting and the geyser body must be bonded to earth, with supplementary equipotential bonding tying together exposed metal (pipes, the geyser, metal frames) so no dangerous voltage can appear between two things a wet hand might touch at once. Confirm earth continuity at testing, not by assumption.

Where the schedule sits in the job 1 · Draft points, heights, IP zones 2 · Circuits loads, cable, RCD sizing 3 · First fix mark boxes at FFL, run conduit 4 · Sign-off RCD trips 30mA, earth continuity

Common mistakes

  • Switch inside the room, in the wet zone — the light/fan switch belongs outside the door or on a dry wall. A switch in Zone 1 or 2 is a code failure and a hazard.
  • Geyser on a shared circuit — a 2–3 kW geyser must have a dedicated radial and its own isolator, not a spur off the lights.
  • No 30 mA RCD, or one that is never tested — an RCD that will not trip is worse than none because it looks safe. Test it at sign-off and hand the client the test-button habit.
  • Heights set from the slab, not FFL — forgetting screed and tile thickness drops every point 50–75 mm low. Always measure from finished floor.
  • Ordinary fittings in Zone 1/2 — a non-IP downlight over the shower, a normal socket by the basin. Match the IP rating to the zone, every time.
  • Skipping supplementary bonding — bond the geyser and metal pipework; do not assume the main earth reaches every fitting.

Verify this schedule against your actual fittings, the sanctioned drawing, IS 732 wiring practice, IS 3043 earthing and a licensed electrical contractor before it goes to site. A template gets you 90 percent of the way; the professional signature closes the last 10.

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