How Many Modules in a Switch Board?

Short answer: count modules, then pick the plate

How many modules in a switch board? Add the module widths of every insert on that wall, include one blank if you want a spare, and choose the next standard plate size that fits — 2M, 4M, 6M, 8M, 12M, or 18M (M = module positions in one row).

Example: entry light (1M) + 2-way stair switch (1M) + fan regulator (2M) + twin 5A socket (2M) = 6 modules → use a 6M or 6-gang plate. If the total is 7, jump to 8M rather than cramming.

This is the core rule Lahore electricians use before cutting modular boxes. For finish choice, gang aesthetics, and wholesale packs, see our switch board buying guide and gold switch plate buying guide once your module tally is fixed.

Module width table — common inserts

Use this planning table (confirm exact widths with your electrician’s brand series):

| Insert | Typical modules | | 1-way switch | 1M | | 2-way switch | 1M | | 5A socket (single) | 1M | | 5A socket (twin) | 2M | | 15A / 16A socket | 2M | | Fan regulator | 2M | | Indicator / neon | 1M | | Bell push | 1M | | TV / data outlet | 1M | | Blank plate (spare) | 1M |

Two 1M switches side by side equal 2M total width. A fan regulator plus one 1-way switch equals 3M — you still need a plate sized for the full row, not “three switches worth of plastic.”

Plate sizes 2M through 18M

Standard modular faceplates come in module rows:

• 2M — single switch + indicator, or one twin socket • 4M — compact bedroom door wall (light + fan, or light + 2 sockets) • 6M — typical bedroom door plate (light, 2-way, fan regulator, socket) • 8M — larger bedroom or small office wall • 12M — kitchen run or shop counter with multiple sockets • 18M — commercial counters, server corners, or combined lighting + power walls

“6-gang” retail naming often equals 6M in module language — but always count module width, not only switch count. A plate labelled 6-gang that holds two regulators and two twin sockets may already be full.

Vertical stacking is a separate decision: one 12M plate vs two 6M plates on the same wall. Electricians choose based on box spacing, plaster depth, and whether you want switches grouped by function (lighting high, sockets low). Either layout can work — module count still drives the plate SKU you order from GlobalPlus.

Worked examples — bedroom, kitchen, shop

Bedroom door wall: 1-way light (1M) + 2-way for corridor (1M) + fan regulator (2M) + indicator (1M) + twin 5A (2M) = 7M → order 8M plate, use 1M blank for future smart switch.

Bedside combination: switched 5A (1M) + twin 5A live (2M) + 1-way mood light (1M) = 4M → 4M switch-socket combination sheet.

Kitchen: fridge 16A (2M) + microwave 16A (2M) + under-cabinet lights 1-way (1M) + extractor switch (1M) + twin 5A (2M) + blank (1M) = 9M → 12M plate with three blanks for later appliances.

Shop counter: POS twin 5A (2M) + router 5A (1M) + signage switched 5A (1M) + ceiling lights 1-way (1M) + 16A for AC isolator (2M) + spare (1M) = 8M → 8M or step to 12M if you expect CCTV power later.

Message GlobalPlus with your tally — we match six-gang plates and switch-socket sheets to your module count.

Common mistakes: counting switches instead of modules; forgetting the fan regulator uses 2M; ordering 6M when 16A sockets already consume half the row; skipping blanks so the plate looks cramped; mixing brands whose 2M widths differ slightly. Fix the tally on paper before plaster — our switch board buying guide covers finishes and safety once module math is settled.