Electrical Cupboard Building Codes & Rules
- Electric Cupboard Tools™ simplifies the National Construction Code (NCC) with interactive graphics, including deemed to comply & best practices.
Cupboard Size
- To suit board
- By electrical engineers
NCC 2022 Vol 1, C4D15 (1)
Fire Safety
- FRL maintained to all penetrationsNCC 2022 Vol 1, C4D15 (1)
- Smoke detection
AS/NZS 3000:2018, 2.10.2.2.3
Corridor / Lobby
Metal
Lining
AS/NZS 3000:2018, 2.10.2.2.3
Secure When OpenAS/NZS 3000:2018, 2.10.2.2.3
- ≥ 180° swing doors if in access/passageway
- Hold open device
- Arranged to prevent a worker from accidentally being pushed towards the switchboard
Electrical Switchboard
Fire Protection
- ≥ 5mm openings, use Fire Retardant Sealant[1]
Fire Protection RULES
NCC 2022 V1
All Building Classes
NCC 2022 S1, S13, C3D14, C4D15, J2D2, 13.4
[2019 Sch 5, Spec C3.15, C2.3, C3.15, J0.1, 3.12]
May 2023
AS/NZS 3000:2018, 2.10.7
AS/NZS 3000:2018, 2.10.7
- Building elements requiring energy use to be protected, secure, & energy efficient to NCC Specifications 1 & 13, Parts C3D14, C4D15, J2D2, 13.4, & AS/NZS 3000
- Wiring penetrations require tight Seals to contain fireAS/NZS 3000:2018, 2.10.7
- ≥ 5mm gaps & openings requires Fire Retardant Sealant
- Conduits & other Wiring Enclosures that requires sealingAS/NZS 3000:2018, 2.10.7
- ≥ 5mm clear space within
AS/NZS 3000:2018, 2.10.7
- ≥ 5mm openings, use Fire Retardant SealantAS/NZS 3000:2018, 2.10.7
Services Located in Egress Path
- Avoid installation of utility services in fire-isolated areas[1]
Utility Installation RULES
NCC 2022 V2
All Building Classes
NCC 2022 D3D8 [2019:D2.7]
May 2023
NCC 2022 Vol 1, D3D8 (1)
NCC 2022 Vol 1, D3D8 (4)
NCC 2022 Vol 1, D3D8 (6)
NCC 2022 Vol 1, D3D8 (2)
- Service shaft access shall not be located in fire-isolated areasNCC 2022 Vol 1, D3D8 (1)
- Conduits of Combustion byproduct must not have any openings along egress pathwaysNCC 2022 Vol 1, D3D8 (4)
- Permitted in egress pathways, but not in fire-isolated exitsNCC 2022 Vol 1, D3D8 (6)
- Non-combustible, fire-protected, & smoke-proof enclosure containing
- Electricity meters, distribution boards
- Telecommunications equipment
- Electric motors
- Permitted in fire-isolated exitsNCC 2022 Vol 1, D3D8 (2)
- Security & monitoring system serving exit
- Detection, lighting, or pressurisation system serving exit
- Communication & alarm system
- Supervision of hydrant or sprinkler valves
NCC 2022 Vol 1, D3D8 (1)
- Avoid installation of utility services in fire-isolated areasNCC 2022 Vol 1, D3D8 (1)
Smoke Detection
- > 1m³ volume having voltages greater than extra-low voltage require smoke detection[1]
- Detector must be in a visible location[2]
Smoke Detector RULES
NCC 2022 V1
All Building Classes
NCC 2022 S20C4 [2019 Spec E2.2a: 4]
May 2023
AS 1670.1:2018, 3.27.5
AS 1670.1:2018, 3.27.5
- Building areas requiring smoke detection to comply to NCC Specification 20 & AS 1670.1
- > 1m³ volume that contains devices with electrical levels exceeding a certain safety threshold requires a Smoke DetectorAS 1670.1:2018, 3.27.5
- If partitions create separate spaces, each area needs detection
- Partitions within ≤ 300mm of the Ceiling & underside of Joists define separate spaces requiring individual detection
- > 3m³ with any electrical equipment requires a Smoke DetectorAS 1670.1:2018, 3.27.5
- Spaces containing devices with electrical levels exceeding a certain safety threshold & divided with partitions are exempted
AS 1670.1:2018, 3.27.5
AS 1670.1:2018, 3.27.1 (c)
- > 1m³ volume having voltages greater than extra-low voltage require smoke detectionAS 1670.1:2018, 3.27.5
- Detector must be in a visible locationAS 1670.1:2018, 3.27.1 (c)
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