Pakistan Cables 4mm² pure copper wire is a heavy‑duty general wiring cable for main house wiring, solar connections, ACs, pumps, geysers, and commercial loads. It uses 99.99% pure copper with flame‑retardant PVC insulation, manufactured to BS 6004 standards for 450/750V systems – ideal for Pakistani conditions in Karachi, Lahore, Islamabad and beyond.

Where 4mm Wire Is Best

• Main wiring for ACs (up to 3 ton)

• Solar DC wiring between panels, controllers and inverters (short runs)

• Water pumps and motors up to 2–3 HP (depending on length)

• Main lines from meter to distribution board

• Heavy socket circuits (iron, heater, oven, etc.)

Technical Specifications

• Conductor: 99.99% pure copper, high‑conductivity

• Size / Cross‑section: 4mm² (approx. 11 AWG)

• Type: Single‑core general wiring cable (stranded or solid depending on variant)

• Voltage rating: 450/750V AC (suitable for 250/440V systems)

• Insulation: FR PVC (flame retardant, 70 °C)

• Coil length: 90 meters guaranteed

• Ampacity (typical): 27–32A in conduit (check local code)

• Colors: Red, Yellow, Blue, Black, Green/Yellow (earth)

• Standards: BS 6004, IEC 60227, ISO certified

Load Capacity Guide (Real Use)

• 1 × 3‑ton split AC or 2 × 1.5‑ton ACs (short runs)

• 2–3 HP water pump (check distance and voltage drop)

• Heavy socket circuits with iron, heater, microwave, oven

• Solar strings up to 40A (short DC runs)

• Main feed from meter to DB for small houses

Always confirm final cable size with a qualified electrician based on distance, breaker size, and load.

4mm vs 2.5mm vs 6mm – When to Choose 4mm

• Compared to 2.5mm², 4mm² carries more current with lower voltage drop, ideal when load is high or cable run is long.

• Compared to 6mm², 4mm² is more cost‑effective where loads are medium (one AC + sockets) rather than very heavy (multiple ACs, big pumps).

Use 4mm when:

• Breaker is 25–32A

• Cable length is moderate to long

• You want extra safety margin on heating and voltage drop

Why Pakistan Cables 4mm Beats Generic Brands

• 99.99% pure copper, no CCA or mixed metals

• True 90m coil – no short length scams

• FR PVC insulation tested for heat and flame

• Manufactured by Pakistan’s most trusted cable brand since 1953

• Complies with BS 6004 / IEC for long‑term safety and performance

Installation Tips (Electrician‑Grade)

1. Use correct breaker size (typically 25A or 32A for 4mm, depending on installation and local code).

2. Pull cable in 20–25 mm PVC conduit to protect against moisture and mechanical damage.

3. Strip 12–15 mm insulation, ensure all strands are inside the terminal – no loose copper.

4. Tighten MCB / isolator terminals to recommended torque to avoid hotspots.

5. For solar use, keep DC runs as short as possible and avoid sharp bends.

Frequently Asked Questions

Q: Is this cable suitable for AC wiring?
Yes. 4mm² Pakistan Cables is commonly used for 1.5–3 ton split ACs and similar loads, depending on cable length and breaker size. Always confirm with an electrician.

Q: Can I use 4mm for solar panels and inverters?
Yes, 4mm² pure copper cable is widely used for solar DC wiring on small and medium residential systems, especially between combiner boxes and inverters. Check current and distance for final sizing.

Q: Is the coil exactly 90 meters?
Yes, Pakistan Cables coils are factory‑measured 90m, unlike cheaper brands that may be short.

Q: Is it solid or stranded?
Pakistan Cables offers single‑core 4mm general wiring typically in stranded construction for flexibility, and solid in some earthing variants. Check product label or our listing details.

Q: Can this replace 7/29 wire?
7/29 is roughly 2.5mm²; 4mm² is thicker and can handle higher current with less voltage drop, so it’s a good upgrade when loads are heavier or runs are longer.

Q: What colors should I choose?
Common practice in Pakistan: Red/Yellow/Blue for phases, Black for neutral, Green/Yellow for earth.

Q: Is it safe for outdoor use?
Yes, as long as it is installed in proper conduit or trunking and not exposed directly to sunlight or mechanical damage.