NCC 2022 Volume One - Building Code of Australia Class 2 to 9 buildings
Search the National Construction Code editions
J7
Part J7 Artificial lighting and powerPart J7 Artificial lighting and power
This Part contains Deemed-to-Satisfy Provisions for compliance with Part J1. It sets out provisions for the design and configuration of artificial lighting and power, boiling and chilled water units, lifts and escalators and moving walkways.
From 1 May 2023 to 30 September 2023 Section J of NCC 2019 Volume One Amendment 1 may apply instead of Section J of NCC 2022 Volume One. From 1 October 2023 Section J of NCC 2022 Volume One applies.
In Tasmania, for a Class 2 building and Class 4 part of a building, Section J is replaced with Section J of BCA 2019 Amendment 1.
Deemed-to-Satisfy Provisions
J7D1
Deemed-to-Satisfy Provisions
2019: J6.0
J7D2
Application of Part
2019: J6.1
Application of Part
J7D3, J7D4 and J7D6(1)(b) do not apply to a Class 8 electricity network substation.
J7D3
Artificial lighting
2019: J6.2
Space | Maximum illumination power density (W/m2) |
---|---|
Auditorium, church and public hall | 8 |
Board room and conference room | 5 |
Carpark - general | 2 |
Carpark - entry zone (first 15 m of travel) during the daytime | 11.5 |
Carpark - entry zone (next 4 m of travel) during the day | 2.5 |
Carpark - entry zone (first 20 m of travel) during night time | 2.5 |
Common rooms, spaces and corridors in a Class 2 building | 4.5 |
Control room, switch room and the like - intermittent monitoring | 3 |
Control room, switch room and the like - constant monitoring | 4.5 |
Corridors | 5 |
Courtroom | 4.5 |
Dormitory of a Class 3 building used for sleeping only | 3 |
Dormitory of a Class 3 building used for sleeping and study | 4 |
Entry lobby from outside the building | 9 |
Health-care - infants' and children's wards and emergency department | 4 |
Health-care - examination room | 4.5 |
Health-care - examination room in intensive care and high dependency ward | 6 |
Health-care - all other patient care areas including wards and corridors | 2.5 |
Kitchen and food preparation area | 4 |
Laboratory - artificially lit to an ambient level of 400 lx or more | 6 |
Library - stack and shelving area | 2.5 |
Library - reading room and general areas | 4.5 |
Lounge area for communal use in a Class 3 or 9c building | 4.5 |
Museum and gallery - circulation, cleaning and service lighting | 2.5 |
Office - artificially lit to an ambient level of 200 lx or more | 4.5 |
Office - artificially lit to an ambient level of less than 200 lx | 2.5 |
Plant room where an average of 160 lx vertical illuminance is required on a vertical panel such as in switch rooms | 4 |
Plant rooms with a horizontal illuminance target of 80 lx | 2 |
Restaurant, café, bar, hotel lounge and a space for the serving and consumption of food or drinks | 14 |
Retail space including a museum and gallery whose purpose is the sale of objects | 14 |
School - general purpose learning areas and tutorial rooms | 4.5 |
Sole-occupancy unit of a Class 3 or 9c building | 5 |
Storage | 1.5 |
Service area, cleaner's room and the like | 1.5 |
Toilet, locker room, staff room, rest room and the like | 3 |
Wholesale storage area with a vertical illuminance target of 160 lx | 4 |
Stairways, including fire-isolated stairways | 2 |
Lift cars | 3 |
Item Notes 1 and 2 | Description | illumination power density adjustment factor |
---|---|---|
Motion detector | In a toilet or change room, other than a public toilet, in a Class 6 building | 0.4 |
Motion detector | Where a group of light fittings serving less than 100 m2 is controlled by one or more detectors | 0.6 |
Motion detector | Where a group of light fittings serving 100 m2 or more is controlled by one or more detectors | 0.7 |
Programmable dimming system Note 3 | Where not less than 75% of the area of a space is controlled by programmable dimmers | 0.85 |
Fixed dimming Notes 3 and 4 | All fittings with fixed dimming | Whichever is greater of (a) 0.5; or (b) 0.2+0.8L where L = the illuminance turndown for the fixed dimming. |
Lumen depreciation dimming Note 3 | All fittings with lumen depreciation dimming | 0.85 |
Two stage sensor - equipped lights with minimum power of 30 % of peak power or less | Fire stairs and other spaces not used for regular transit | 0.4 |
Two stage sensor - equipped lights with minimum power of 30% of peak power or less | Transitory spaces in regular use or in a carpark | 0.7 |
Daylight sensor and dynamic lighting control device - dimmed or stepped switching of lights adjacent windows Notes 3 and 5 | In a Class 5, 6, 7, 8 or 9b building or a Class 9a building, other than a ward area, where the lights are adjacent windows, other than roof lights, for a distance from the window equal to the depth of the floor to window head height | 0.5 Note 3 |
Daylight sensor and dynamic lighting control device - dimmed or stepped switching of lights adjacent windows Notes 3 and 5 | Serving a Class 3 or 9c building, or a Class 9a ward area, where the lights are adjacent windows, other than roof lights, for a distance from the window equal to the depth of the floor to window head height | 0.75 Note 3 |
Daylight sensor and dynamic lighting control device - dimmed or stepped switching of lights adjacent windows Notes 3 and 5 | In a Class 5, 6, 7, 8 or 9b building or a Class 9a building, other than a ward area, where the lights are adjacent roof lights | 0.6 Note 3 |
Daylight sensor and dynamic lighting control device - dimmed or stepped switching of lights adjacent windows Notes 3 and 5 | In a Class 3 or 9c building, or a Class 9a ward area, where the lights are adjacent roof lights | 0.8 Note 3 |
Light source | Description | Illumination power density adjustment factor |
---|---|---|
CRI ≥ 90 | Where lighting with good colour rendering is used | 0.9 |
CCT ≤ 3500 K Note | Where lighting with a warm appearance is used | 0.8 |
CCT ≥ 4500 K | Where lighting with a cool appearance is used | 1.1 |
Includes luminaires that can adjust their CCT to 3500 K or below.
J7D4
Interior artificial lighting and power control
2019: J6.3
must be controlled by a daylight sensor and dynamic lighting control device in accordance with Specification 40.
J7D5
Interior decorative and display lighting
2019: J6.4
J7D6
Exterior artificial lighting
2019: J6.5
J7D7
Boiling water and chilled water storage units
2019: J6.6
Power supply to a boiling water or chilled water storage unit must be controlled by a time switch in accordance with Specification 40.
J7D8
Lifts
2019: J6.7
Lifts must—
Rated load | Idle and standby energy performance level in accordance with ISO 25745-2 Note |
---|---|
Less than or equal to 800 kg | 2 |
801 kg to less than or equal to 2000 kg | 3 |
2001 kg to less than or equal to 4000 kg | 4 |
Greater than 4000 kg | 5 |
Applies to the standby power used after 30 minutes.
Usage category in accordance with ISO 25745-2 | Energy efficiency class in accordance with ISO 25745-2 |
---|---|
1-4 | C |
> 5 | D |
J7D9
Escalators and moving walkways
2019: J6.8
Escalators and moving walkways must have the ability to slow to between 0.2 m/s and 0.05 m/s when unused for more than 15 minutes.