Our 4.0mm² Green/Yellow Building Wire is a single-core insulated earth conductor supplied on a 100 metre roll. The green/yellow insulation identifies it as an earthing conductor, making it a go-to cable for separate earth conductors, equipotential bonding, switchboard earths and earth runs installed in conduit.

It is built from 7/0.85mm stranded plain annealed copper with V-90 PVC insulation, giving a slim 4.6mm overall diameter and a 0.6/1kV rating. The stranded conductor is easy to pull through conduit and form neatly to earth bars, and the cable is also suitable for glanding.

Key Features

  • 4.0mm² Conductor – A common size for circuit earths and bonding conductors.
  • Green/Yellow Insulation – Clearly identifies the conductor as an earth.
  • 7-Strand Copper – Forms more easily than a solid conductor of the same size.
  • V-90 Insulation – Rated for a 90°C maximum conductor temperature.
  • 0.6/1kV Rating – Insulation rated for low-voltage mains and switchboard wiring.
  • Slim 4.6mm Diameter – Easy to run in conduit alongside other single cores.
  • Suits Glanding – Can be terminated through cable glands.
  • 100m Roll – Plenty of length for multiple earthing runs or switchboard projects.

Specifications

  • Conductor Size: 4.0mm²
  • Cores: Single core
  • Conductor: Plain annealed copper, stranded 7/0.85mm
  • Insulation: V-90 PVC
  • Insulation Colour: Green/yellow
  • Overall Diameter: 4.6mm (±10%)
  • Max Conductor Temperature: 90°C
  • Voltage Rating: 0.6/1kV
  • Cable Type: Building wire (unsheathed)
  • Standard: AS/NZS 5000.1
  • Length: 100m roll

Applications

  • Separate earth conductors run in conduit with single-core actives and neutrals
  • Equipotential bonding of metallic pipework and conductive parts
  • Earth wiring inside switchboards, control panels and distribution boards

Clearly identified, easy to pull and supplied on a generous roll, this 4.0mm² Green/Yellow Building Wire covers everyday earthing and bonding work with its 7-strand copper conductor, V-90 insulation and slim 4.6mm profile.

Q. What is green/yellow building wire used for?
A. Green/yellow insulation identifies an earthing conductor. This 4.0mm² wire is typically used for separate earths, bonding conductors and earths in conduit, with the size confirmed by the electrician to AS/NZS 3000.

Q. Does this building wire have an outer sheath?
A. No. Building wire is a single insulated core without an outer sheath, so it is normally installed in conduit or trunking, or inside switchboards and enclosures.

Q. Is it available in other colours?
A. Yes. 4.0mm building wire is also stocked in red and black.

Q. Is this sold by the metre or by the roll?
A. The price is for a 100 metre roll of 4.0mm² green/yellow building wire.

All products must be installed by a licensed electrican. DIY electrical work is illegal and very dangerous.

Change of Mind
All products purchased from MJS Electrical Products & Supplies are backed by a thirty (30) day Peace of Mind Return Policy. All products returned must be in perfect unused condition, with all components, complete with original packaging. We will not allow returns on damaged or incomplete products. Proof of purchase is required. Should the product not be in original condition, please contact us before returning it as this may save you some unnecessary costs.

Damaged / Faulty Goods
If you find that the goods were damaged in transit or were faulty in some manner, please contact us within 24 hours of receiving the goods. We will organise for the return of the goods and arrange a credit towards your next purchase or send a replacement product. Customer will incur the cost of return postage and be credited the purchase price only. We recommend that you return your unwanted items using registered post or trackable courier. We can not be held responsible if returned items are lost in transit.

Warranties
Product warranties are governed by the respective manufacturers and / or suppliers warranty terms and conditions (available on request). We will not be liable to you or any third party for any loss suffered due to product failure. We will process product warranty claims through the respective manufacturers and/or suppliers. All warranties are void if the product is not installed by a licensed electrician.

PRODUCT INFO
SKU BW40EA
Barcode # 9355616000830
Brand MJS Electrical Products & Supplies
SHIPPING INFO
Shipping Weight 5.4000kg
Shipping Width 0.210m
Shipping Height 0.110m
Shipping Length 0.210m