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In NSW (and broadly across Australia), when water pipes (plumbing) and electrical cables need to cross over each other in a residential setting, there are strict safety requirements to prevent hazards such as electrical shock, fire, or water damage. The key guidelines come from:
AS/NZS 3500 – Plumbing and Drainage Standards
AS/NZS 3000 – Electrical Wiring Rules (Wiring Rules)
Here’s what you need to know:
???? Minimum Separation Requirements
When water pipes and electrical cables must cross:
Vertical Crossing (where they intersect):
A minimum 50 mm (5 cm) vertical separation is required between the outer surfaces of the pipe and cable.
This separation helps prevent damage during repairs or from heat transfer.
Horizontal Run (when they run parallel):
A minimum 100 mm (10 cm) horizontal separation is typically required.
If closer, a physical barrier or conduit must be used to protect both services.
⚠️ Protective Measures Required
If the required separations can't be achieved, protection must be installed, such as:
Electrical cables in conduit (rigid PVC or metal)
Water pipes lagged or sleeved (especially hot water)
A durable physical barrier (e.g., non-conductive board) between the services
当水管与电线必须交叉时:
垂直交叉:
水管与电线之间的外表面应保持至少50毫米的垂直距离。
水平平行铺设:
两者之间应保持最小100毫米的水平距离。
如果无法达到该距离,必须使用保护性导管或屏障(如PVC管、护板)。
地下铺设时:
给水管与电线应:
分别在不同的沟槽中铺设,或
至少保持300毫米的距离,或
使用坚固耐久的屏障(如塑料板、混凝土分隔板)
防护措施:
如无法避免近距离交叉,需使用:
电线穿在**硬质保护管(conduit)**内
给水管做保温或包裹
在两者之间添加坚固屏障
最佳做法:
电线与水管应垂直(90度)交叉
避免重叠或同槽铺设
使用标识胶带(如蓝色代表水管,红色或橙色代表电缆)
合规要求:
所有施工必须由持牌电工或水管工完成或签字认证,并在需要时提供合规证书(Compliance Certificate)。 |
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