The current carrying capacity of copper conductors refers to the maximum amount of electrical current a wire can handle before it risks melting the conductor or damaging the insulation. This capacity is determined by how much heat the wire generates as current flows through it. Although you could theoretically increase the current until the copper melts, practical limits are set by factors such as insulation quality, ambient temperature, and wire placement. Understanding these factors helps ensure that copper conductors operate safely and efficiently in electrical systems.
35 sq mm Copper Cable Current Carrying Capacity
Copper cables with a cross-sectional area of 35 sq mm are highly popular for various residential, commercial, and industrial uses. These cables can handle significant electrical loads without sacrificing performance or safety. Their impressive current carrying capacity makes them ideal for a wide range of power transmission needs, from home wiring to large industrial setups.
10 sq mm Copper Cable Current Carrying Capacity
A 10 sq mm copper cable offers a strong current carrying capacity, making it suitable for many electrical projects. Commonly used in residential circuits and moderate electrical tasks, it supports reliable power flow for applications like lighting and dimmer switches. Its durability in different environments adds to its versatility for various wiring needs.
6 sq mm Copper Cable Current Carrying Capacity
The 6 sq mm copper cable is well-regarded for its high conductivity and reliable performance. It can handle up to 67 amps, making it a versatile choice for both residential and industrial applications. Its ability to manage substantial current loads while remaining durable under harsh conditions makes it a dependable option for electrical installations.
70 sq mm Copper Cable Current Carrying Capacity
With a cross-sectional area of 70 sq mm, these copper cables are perfect for high-power industrial applications. They can manage large electrical currents, making them ideal for tasks requiring robust and reliable power transmission. Their design ensures safety and performance for both indoor and outdoor installations.
120 sq mm Copper Cable Current Carrying Capacity
A 120 sq mm copper cable is a strong and versatile option for demanding electrical applications. It can support up to 150 amps, or even 175 amps in short bursts, making it suitable for high-power commercial and residential projects. Its durability and high current capacity ensure efficient and safe power delivery for various applications.
95 sq mm Copper Cable Current Carrying Capacity
The 95 sq mm copper cable stands out for its ability to handle up to 240 amps. Its robust design and flexibility make it a great choice for many electrical projects, including those requiring significant power loads. This cable is known for its high performance and safety in diverse wiring situations.
16 sq mm 4 Core Copper Cable Current Carrying Capacity
The 16 sq mm 4-core copper cable can handle up to 95 amps, making it ideal for both small and large-scale power systems. Its four-core design allows it to support various applications, from industrial motors to heavy-load power systems, while its durability ensures long-lasting performance.
95 sq mm Single Core Copper Cable Current Carrying Capacity
A 95 sq mm single core copper cable can manage between 40A and 300A, depending on factors like cable length and environment. This wide range of current carrying capacity makes it suitable for a variety of electrical needs, providing reliable and safe power distribution for many applications.
3 Core 6 sq mm Copper Cable Current Carrying Capacity
The 3-core 6 sq mm copper cable is designed for handling up to 67 amps. It’s often used in electrical wiring for homes and businesses where consistent power delivery is essential. Its design offers safety and efficiency, making it a reliable choice for many wiring projects.
1 sq mm Copper Cable Current Carrying Capacity
Copper cables with a 1 sq mm cross-section can carry up to 30 amps, making them suitable for smaller electrical circuits. They are commonly used in residential and commercial settings for various wiring tasks, offering a balance of affordability, reliability, and performance.
1.5 sq mm 3 Core Copper Cable Current Carrying Capacity
The 1.5 sq mm 3-core copper cable supports up to 20 amps per conductor, making it a good option for many household and commercial applications. Its current carrying capacity ensures that it can handle multiple devices or small appliances efficiently.
1.5 sq mm Copper Cable Current Carrying Capacity
The 1.5 sq mm copper cable can handle up to 25 amps, making it a popular choice for residential wiring projects. Its effective current carrying capacity and ease of installation make it suitable for powering lighting circuits and small electrical appliances.
185 sq mm Copper Cable Current Carrying Capacity
With a capacity of up to 360 amps, the 185 sq mm copper cable is ideal for large-scale electrical projects. Its high current carrying ability makes it suitable for industrial applications and heavy-duty installations, ensuring reliable and efficient power transmission.
2.5 sq mm 4 Core Copper Cable Current Carrying Capacity
A 2.5 sq mm 4-core copper cable can manage between 10A and 50A depending on specific conditions. This cable is versatile for various wiring tasks, from residential circuits to commercial installations, offering a solid balance of performance and safety.
2.5 sq mm Copper Cable Current Carrying Capacity
The 2.5 sq mm copper cable supports up to 24 amps, making it a reliable choice for a range of electrical applications. Its high conductivity and durability make it a great option for various wiring needs, from simple household circuits to more demanding applications.
240 sq mm Copper Cable Current Carrying Capacity
The 240 sq mm copper cable can handle up to 95 amps, making it suitable for significant electrical tasks. It is often used in industrial settings and large commercial projects, providing reliable and efficient power delivery for heavy-duty applications.
25 sq mm 4 Core Copper Cable Current Carrying Capacity
The 25 sq mm 4-core copper cable supports up to 20 amps, ideal for power systems in both residential and commercial settings. Its robust construction and multiple cores make it versatile for various wiring tasks, offering reliable performance and safety.
3.5 Core 70 sq mm Copper Cable Current Carrying Capacity
The 3.5 core 70 sq mm copper cable can carry up to 95 amps, making it suitable for larger homes and commercial buildings. Its design allows for effective power transmission and is perfect for high-powered applications such as air conditioners and heavy machinery.
Core 10 sq mm Copper Cable Current Carrying Capacity
A 4-core 10 sq mm copper cable can manage up to 240 amps, making it a strong choice for high-demand applications. Its multiple cores and high current carrying capacity make it ideal for large commercial and industrial installations.
4 Core 70 sq mm Copper Cable Current Carrying Capacity
With the ability to handle up to 95 amps, the 4-core 70 sq mm copper cable is perfect for various electrical systems. Its design supports substantial power loads and is suitable for both residential and industrial use.Â
6 sq mm 4 Core Copper Cable Current Carrying Capacity
The 6 sq mm 4-core copper cable can handle up to 60 amps, making it suitable for high-power applications. Its durability and performance make it a good choice for both domestic and industrial wiring needs.
Current Carrying Capacity of Copper Conductors Chart
| Group 1 | Group 2 | Group 3 | ||||
| Nominal Cross Section (mm²) | Current Carrying Capacity (A) Copper Wire | Protective Fuse (A) | Current Carrying Capacity (A) Copper Wire | Protective Fuse (A) | Current Carrying Capacity (A) Copper Wire | Protective Fuse (A) |
| 0,75 | 12 | 6 | 15 | 10 | ||
| 1 | 11 | 6 | 15 | 10 | 19 | 16 |
| 1,5 | 15 | 10 | 18 | 16 | 24 | 20 |
| 2,5 | 20 | 16 | 26 | 20 | 32 | 25 |
| 4 | 25 | 20 | 34 | 25 | 42 | 32 |
| 6 | 33 | 25 | 44 | 32 | 54 | 50 |
| 10 | 45 | 32 | 61 | 50 | 73 | 63 |
| 16 | 61 | 50 | 82 | 63 | 98 | 80 |
| 25 | 83 | 63 | 108 | 80 | 129 | 100 |
| 35 | 103 | 80 | 135 | 100 | 158 | 125 |
| 50 | 132 | 100 | 168 | 125 | 198 | 160 |
| 70 | 165 | 125 | 207 | 160 | 245 | 200 |
| 95 | 197 | 160 | 250 | 200 | 292 | 250 |
| 120 | 235 | 200 | 292 | 250 | 344 | 315 |
| 150 | 335 | 250 | 391 | 315 | ||
| 185 | 382 | 315 | 448 | 400 | ||
| 240 | 453 | 315 | 528 | 400 | ||
| 300 | 504 | 400 | 608 | 500 | ||
| 400 | 726 | 630 | ||||
| 500 | 830 | 630 | ||||
Derating Factors for Bundled Conductors
| Bundle# | Derating Factor (X Amps) |
|---|---|
| 2-5 | 0.8 |
| 6-15 | 0.7 |
| 16-30 | 0.5 |
Amperes
| Insulation Materials: | Polyethylene Neoprene Polyurethane Polyvinylchloride (Semi-Rigid) | Polypropylene Polyethylene (High Density) | Polyvinylchloride PVC (Irradiated) Nylon | Kynar (135°C) Polyethylene (Crosslinked) Thermoplastic Elastomers | Kapton PTFE FEP PFA Silicone |
|---|---|---|---|---|---|
| Copper Temp. | 80°C | 90°C | 105°C | 125°C | 200°C |
| 30 AWG | 2 | 3 | 3 | 3 | 4 |
| 28 AWG | 3 | 4 | 4 | 5 | 6 |
| 26 AWG | 4 | 5 | 5 | 6 | 7 |
| 24 AWG | 6 | 7 | 7 | 8 | 10 |
| 22 AWG | 8 | 9 | 10 | 11 | 13 |
| 20 AWG | 10 | 12 | 13 | 14 | 17 |
| 18 AWG | 15 | 17 | 18 | 20 | 24 |
| 16 AWG | 19 | 22 | 24 | 26 | 32 |
| 14 AWG | 27 | 30 | 33 | 40 | 45 |
| 12 AWG | 36 | 40 | 45 | 50 | 55 |
| 10 AWG | 47 | 55 | 58 | 70 | 75 |
| 8 AWG | 65 | 70 | 75 | 90 | 100 |
| 6 AWG | 95 | 100 | 105 | 125 | 135 |
| 4 AWG | 125 | 135 | 145 | 170 | 180 |
| 2 AWG | 170 | 180 | 200 | 225 | 240 |
FAQs
What is the current carry capacity of copper wire?
Copper cables with a cross-sectional area of 1 sq mm can carry up to 30A of current. This high capacity makes them suitable for various electrical wiring applications.
How much current can 1 sq mm copper wire carry?
A 1 sq mm copper wire can carry around 10 Amperes of current for general electrical applications. For other uses, the capacity depends on the wire’s material strength and intended purpose.
How much current can 95 sq mm cu cable carry?
A 95 sq mm copper cable can carry up to 260 amps of current, complying with IS 694:2010 standards. It’s used for various applications, including low-tension wiring and electrical installations.
