Electrical floor plan symbols: what they mean, and getting a proper symbol drawing in one tap

Every week someone asks Google or an AI what the symbols on their electrical plan mean. Here's the short version an electrician would give you, plus the part most guides skip: how to produce a proper symbol drawing yourself without touching CAD.

The symbols you'll actually see on a house plan

• Downlight: a small circle, often solid or with a cross. Rows of them across a ceiling are your general lighting.
• Pendant / batten light: a larger circle, sometimes with radiating lines. Usually centred in a room or over an island.
• Switch: a small circle with a stroke (or the letter S). A number next to it — 2, 3, 4 — is the gangs: how many rockers on the plate. "2W"/"3W" marks two-way and intermediate switching (the hallway light you can turn off from both ends).
• GPO / powerpoint: a circle with lines or the letters GP. A "2" means a double. A marking like "WP" is weatherproof for outdoors.
• Data point: a triangle or a square marked with D or a jack symbol — a network cable back to the rack or the router.
• Camera / doorbell / sensor: increasingly common on smart-home plans; usually a labelled square or a lens glyph at the entries and corners.
• LED strip: a dashed or highlighted run along a kickboard, shelf or pelmet, usually with a driver noted nearby.

Heights matter too: Australian plans often mark mounting heights off the finished floor level (FFL) — switches around 1300mm, GPOs at 300mm, unless noted otherwise.

Photos sell, symbols certify

Here's the practical tension. A plan showing real product photos is what wins the customer — they can see their actual switches and lights. But a builder, a certifier or another trade expects a conventional symbol drawing with a legend.

Traditionally that meant drawing the plan twice, or paying for CAD. In robot® Plan it's one tap: the same marked-up plan flips every product photo into a clean electrical symbol, legend included, and flips back whenever you're showing the customer. One plan, both audiences, zero redrawing — and the same plan also counts itself into a materials list.

If you've been handed a plan and want to mark one up yourself, start free here — upload the PDF and the symbols place themselves as you drop products on.