Recessed Can Light (6-inch) Symbol
Definition: The Recessed Can Light (6-inch) symbol represents a 6-inch diameter recessed luminaire — also called a can light, downlight, or pot light — installed flush within a ceiling cavity, depicted in electrical wiring diagrams with a Hot pin and a Neutral pin to show the 120 V AC supply connections required per NEC Article 410.
Also known as: can light, 6-inch downlight, pot light, recessed downlight, ceiling can, recessed fixture.
What the Recessed Can Light (6-inch) symbol means
The Recessed Can Light (6-inch) symbol denotes a ceiling-mounted luminaire whose housing (the 'can') is concealed above the finished ceiling surface, with only the trim ring and lamp visible from below. The 6-inch designation refers to the aperture diameter — the most common residential size — and determines compatibility with retrofit LED modules and trims.
In wiring diagrams, the symbol appears on ceiling plans and electrical layouts to indicate the location and supply connections of each recessed fixture. The two pins (Hot and Neutral) represent the branch-circuit wiring: Hot carries the switched live conductor from the wall switch, and Neutral completes the return path to the panel. A separate Equipment Ground conductor is required by NEC 410.44 but is often implied rather than drawn as a separate pin.
How to identify the Recessed Can Light (6-inch) symbol
The Recessed Can Light (6-inch) symbol is drawn as three concentric circles: a large outer circle representing the ceiling aperture or trim ring, a middle circle representing the reflector cone inside the can, and a small inner circle or dot representing the lamp position. This nested-circle appearance distinguishes a recessed can light from a simple ceiling light (single circle) or a surface-mounted fixture.
Function and usage boundary
A recessed can light provides directional downward illumination from a housing recessed into the ceiling cavity. The housing contains a socket for the lamp (incandescent, halogen, CFL, or LED), a heat sink, and electrical connections. Modern LED recessed modules integrate the driver and light engine directly. The fixture is controlled by a wall switch on the Hot conductor; the Neutral returns continuously to the neutral bar, enabling neutral-required smart switches and occupancy sensors.
Standards: IEC vs ANSI
| IEC 60617 | IEC 60598-2-2 covers recessed luminaires, specifying thermal requirements, insulation-contact (IC) ratings, and wiring compartment requirements. IEC 60617 does not define a specific can-light symbol; wiring diagrams use a general luminaire symbol with a textual label. |
|---|---|
| ANSI/IEEE 315 | ANSI / NEMA does not publish a dedicated schematic symbol for recessed can lights. In North American architectural and electrical drawings the symbol follows conventions in ANSI/IEEE 315 and the NEC (NFPA 70, Article 410) for luminaires, represented as concentric circles on floor/ceiling plans. |
| Key difference | IEC and ANSI schematics both use circular symbols for luminaires; the specific triple-circle representation for recessed cans is a drawing convention, not a formally mandated glyph. IC (insulation contact) rating and labelling requirements differ: NEC Article 410.116 mandates IC-rated housings where ceiling insulation contact is possible. |
The displayed SVG is the live editor implementation, not a licensed reproduction or certification of an IEC or IEEE database glyph. Verify the exact official entry and project edition before issuing work.
Logical terminals
| Logical ID | Editor terminal name |
|---|---|
| hot | Hot |
| neutral | Neutral |
Where the Recessed Can Light (6-inch) symbol is used
- General ambient lighting in residential living rooms, kitchens, and hallways using multiple fixtures on a switched circuit
- Task lighting over kitchen countertops and bathroom vanities with 4-inch or 6-inch trims
- Accent lighting in gallery walls and retail displays using adjustable-gimbal 6-inch cans
- Exterior soffit lighting under eaves where IC-rated, airtight housings prevent heat loss
- Commercial office and retail ceiling grids replacing T-bar fluorescent fixtures with recessed LED downlights
- Home theatre rooms for controlled ambient lighting on dimmer circuits (requires dimmable LED driver)
Key facts
- The Recessed Can Light (6-inch) symbol has two electrical pins: Hot (switched live from wall switch) and Neutral (return to panel neutral bar); an Equipment Ground is also required by NEC 410.44.
- The 6-inch aperture is the most common residential recessed can size; it requires a housing with a 6-inch (152 mm) cut-out and accepts standard 6-inch trim rings and BR30/PAR30 or equivalent LED modules.
- NEC Article 410.116 requires IC-rated (Insulation Contact) housings wherever the fixture may contact ceiling insulation; non-IC housings must maintain a 3-inch (76 mm) clearance from insulation and a 0.5-inch clearance from combustible materials.
- Modern LED recessed retrofit modules replace the separate bulb with an integrated driver and light engine, eliminating the need for a socket and ballast and improving efficiency to 80–100 lm/W.
- A recessed can light in an exterior soffit or bathroom ceiling must be rated for damp or wet locations (NEC 410.10) to prevent moisture ingress into the housing.
- Dimming requires a dimmable LED driver or module and a compatible TRIAC, ELV, or 0-10 V dimmer switch — standard LED modules may flicker or not dim if paired with an incompatible dimmer.
- Energy codes (IECC, Title 24) require that recessed can lights in insulated ceilings be airtight (ASTM E283 ≤2 CFM at 75 Pa) to prevent conditioned air leakage into the attic.
Frequently asked questions
What does the recessed can light symbol look like in a wiring diagram?
The recessed can light symbol is drawn as three concentric circles: a large outer circle for the ceiling aperture/trim, a middle circle for the reflector cone, and a small inner circle for the lamp. This triple-circle representation distinguishes it from a simple ceiling light (single circle) on electrical plans.
What does the recessed can light symbol mean on an electrical plan?
The symbol marks the ceiling location and circuit connections for a flush-mounted recessed luminaire. It indicates that the fixture housing is concealed in the ceiling cavity, with only the trim ring and lamp visible. The Hot pin shows the switched supply and the Neutral pin shows the return conductor.
How many wires does a recessed can light need?
A standard recessed can light requires three conductors: Hot (switched live, typically black), Neutral (white), and Equipment Ground (bare copper or green) per NEC 410.44. Some smart-switch installations also require a continuous (unswitched) Neutral to the switch location.
What is the difference between IC-rated and non-IC-rated recessed can lights?
IC-rated (Insulation Contact) housings are approved to be in direct contact with ceiling insulation per NEC 410.116 and UL 1598; non-IC housings must be kept at least 3 inches from insulation. Using a non-IC housing in contact with insulation creates a fire risk from heat build-up.
Can recessed can lights be on a 15 A circuit?
Yes. Modern LED recessed lights typically draw 5–15 W each, so a 15 A, 120 V branch circuit (1440 W capacity at 80% NEC loading = 1152 W) can safely supply up to 25 or more 5 W LED fixtures. NEC 210.23 limits a single outlet to 80% of circuit rating for continuous loads.
What standard covers recessed luminaire installation?
In North America, NEC Article 410 governs luminaire installation and wiring requirements; ANSI/UL 1598 covers the luminaire product standard. In international markets, IEC 60598-2-2 covers recessed luminaires for general lighting purposes.
What is a 6-inch recessed can light?
A 6-inch recessed can light is a recessed luminaire with a 6-inch (152 mm) diameter ceiling aperture — the most common size in North American residential construction. It accepts 6-inch trims and BR30 or PAR30 bulbs or equivalent LED modules, and is widely used for general and task lighting in kitchens, living rooms, and hallways.
Related symbols
- Circuit Breaker symbol
- Light Fixture symbol
- Outlet symbol
- Recessed Light symbol
- Switch (3-Way) symbol
- Switch (SPST) symbol
Physical breadboard, PCB, and panel mapping
No universal physical profile is published for this symbol yet. Create a versioned custom part from the exact manufacturer dimensions and terminal map before fabrication.
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