Why Need Water Heater 2.5mm2 wire?
- Water Heater Manufacturer Installation Manual regulate must use water heater 2.5mm2 wire to ensure safety and prevent fire hazard.
- Singapore Standard SS636:2018 – Code of Practice for Water Services Clause 6.5.2(g) indicate that all the installation spec must comply with manufacturer.
- Singapore Standard SS638:2018 – Code of Practice for Electrical Installations indicate water heater 2.5mm2 wire current rating (433.1 Cor-ordination between conductor and overload protective device)
What kind of wire/cable is approved for use in Singapore?
- All wire specifications must comply with SS638:2018, which is reproduced from the BS7671:2018 Wiring Regulations.
- Wires without proper specifications are not allowed, and their installation in Singapore for any appliances is a violation.
- The wire specifications 3C x 70/0.0076 or 3C x 110/0.0076 have had their approvals withdrawn and are no longer allowed for installation in Singapore for any appliances.
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