Marley Heavy Duty uPVC Orange Conduit features:
- Greater wall thickness than medium duty (as per AS/NZS 2053)
- Greater impact and compression resistance than medium duty
- Full range of sizes and fittings (20mm – 50mm, 4m length).
AS/NZS 3000 Standard Information
Relating to the duty rating of conduit, AS/NZS 3000 states that for an underground installation:
Category A – wiring system is heavy duty conduit, without the need for extra mechanical protection (cable cover);
Category B – wiring system is medium duty conduit and requires the need for extra mechanical protection (cable cover).