Cable Current Carrying Capacity Calculator (Australia)

Cable current carrying capacity varies depending on factors like cable type, size, insulation, and installation conditions. Here are some approximate values for copper THHN/THWN-2 conductors: 14 AWG: 15A, 12 AWG: 20A, 10 AWG: 30A, 8 AWG: 50A, 6 AWG: 65A, 4 AWG: 85A, 2 AWG: 115A, 1/0 AWG: 150A, 2/0 AWG: 175A, 3/0 AWG: 200A, 4/0 AWG: 230A. Always follow local codes and manufacturer specifications.

Copper Cable Current Carrying Capacity (Amps)

Cable Type	Size (AWG or mm²)	Current Carrying Capacity (Amps)
THHN/THWN-2 (Cu)	14 AWG (2.08 mm²)	15
THHN/THWN-2 (Cu)	12 AWG (3.31 mm²)	20
THHN/THWN-2 (Cu)	10 AWG (5.26 mm²)	30
THHN/THWN-2 (Cu)	8 AWG (8.37 mm²)	50
THHN/THWN-2 (Cu)	6 AWG (13.3 mm²)	65
THHN/THWN-2 (Cu)	4 AWG (21.2 mm²)	85
THHN/THWN-2 (Cu)	2 AWG (33.6 mm²)	115
THHN/THWN-2 (Cu)	1/0 AWG (53.5 mm²)	150
THHN/THWN-2 (Cu)	2/0 AWG (67.4 mm²)	175
THHN/THWN-2 (Cu)	3/0 AWG (85.0 mm²)	200
THHN/THWN-2 (Cu)	4/0 AWG (107 mm²)	230
Aluminum (XHHW-2)	2 AWG (33.6 mm²)	90
Aluminum (XHHW-2)	1/0 AWG (53.5 mm²)	130
Aluminum (XHHW-2)	2/0 AWG (67.4 mm²)	150
Aluminum (XHHW-2)	3/0 AWG (85.0 mm²)	175
Aluminum (XHHW-2)	4/0 AWG (107 mm²)	210

FAQs

How do you calculate current carrying capacity of a cable?

• The current carrying capacity of a cable is calculated based on factors like cable size (cross-sectional area in square millimeters or AWG), cable material (copper or aluminum), insulation type, installation method, temperature, and local electrical codes. Specific formulas and tables are used to determine the capacity accurately.

Can 2.5 cable take 32 amps?

• A 2.5 mm² cable can typically handle around 20-25 amps. It may not be suitable for a constant 32-amp load.

How many amps can my cable take?

• The maximum amperage a cable can handle depends on its specifications, including size, material, and insulation. Consult cable manufacturer data or local regulations for precise values.

How many amps can 2.5 mm cable take in Australia?

• A 2.5 mm² cable in Australia can typically handle around 20-25 amps, considering standard conditions and regulations.

How do you calculate load carrying capacity?

• Load carrying capacity calculations involve considering factors such as cable size, material, insulation, temperature, and installation method. Specific formulas or tables are used to determine the capacity accurately.

What is the current carrying capacity of a 32-amp rated cable?

• A 32-amp rated cable can generally handle a continuous load of 32 amps, assuming it is appropriately sized and meets other relevant specifications.

What is the maximum amps on a 2.5 cable?

• The maximum continuous current capacity for a 2.5 mm² cable is typically around 20-25 amps.

What is the maximum load of a 2.5 cable?

• The maximum load capacity of a 2.5 mm² cable depends on factors such as cable material, insulation type, temperature, and local regulations. It is usually around 20-25 amps.

What size cable for 30 amps?

• For a 30-amp load, a cable size of 4 mm² (or larger) is recommended to ensure safety and prevent overheating.

What happens if wire gauge is too big?

• Using a wire gauge that is too large for the application can be costly and take up unnecessary space but won’t harm the circuit. It may lead to excessive expenses and installation challenges.

Does length of cable affect amps?

• Yes, the length of a cable can affect its ability to carry current. Longer cable runs can result in voltage drop, reducing the available amps at the load end.

What is the current carrying capacity of a cable and wire?

• The current carrying capacity of a cable or wire depends on its size, material, insulation, and other factors. Consult manufacturer data or local electrical codes for precise values.

How much current can 2.5 sq mm Al cable carry?

• A 2.5 mm² aluminum cable can typically handle around 16-20 amps, depending on various factors.

What is the amp rating of 2.5 mm flexible cable?

• A 2.5 mm² flexible cable can typically handle around 20-25 amps under standard conditions.

What is the amp rating of 4 core 2.5 mm cable?

• A 4-core 2.5 mm² cable can generally handle around 20-25 amps, considering standard conditions and regulations.

Can carrying capacity be calculated?

• Yes, carrying capacity can be calculated based on cable specifications and application requirements, using relevant formulas and guidelines.

What is the maximum load capacity?

• The maximum load capacity depends on the specific cable, its size, material, and other factors. Consult manufacturer data or local regulations for accurate values.

What is the formula for calculating load?

• The formula for calculating load capacity depends on cable specifications and is typically provided by cable manufacturers or local electrical codes.

What is the maximum current for 22 AWG wire?

• A 22 AWG wire can generally handle around 3-5 amps.

How many amps will 2 AWG carry?

• A 2 AWG wire can typically handle 150-200 amps or more, depending on the specific cable and conditions.

What size cable for 50 amps?

• For a 50-amp load, a cable size of 6 mm² (or larger) is recommended for safety and performance.

Will #2 wire carry 100 amps?

• #2 wire can typically handle 100 amps, but the specific ampacity may vary based on cable specifications and local regulations.

What is the maximum amps per AWG?

• The maximum amps per AWG (American Wire Gauge) can vary, with larger AWG numbers indicating smaller wire sizes. Consult manufacturer data and local codes for precise values.

How many amps can 2.5 twin and earth take?

• A 2.5 mm² twin and earth cable can typically handle around 20-25 amps, considering standard conditions and regulations.

What is the current carrying capacity of 2.5 SWA cable?

• The current carrying capacity of a 2.5 mm² Steel Wire Armored (SWA) cable depends on factors such as installation method, cable material, and insulation. Consult manufacturer data or local regulations for accurate values.

What is the current carrying capacity of 2.5 copper flexible cable?

• A 2.5 mm² copper flexible cable can typically handle around 20-25 amps under standard conditions.

What is 2.5 cable used for?

• A 2.5 mm² cable is commonly used for various electrical applications, including power distribution, lighting circuits, and appliances.

What size wire do I need for 30 amps at 100 feet?

• For a 30-amp load at 100 feet, a cable size of 8 mm² (or larger) is recommended for voltage drop considerations.

How far can you run 10 gauge wire on a 30 amp circuit?

• The maximum distance for running 10-gauge wire on a 30-amp circuit depends on voltage drop requirements. A rough estimate is around 50-60 feet for 120V circuits.

Can I use 12 gauge wire on a 30 amp circuit?

• No, it’s not advisable to use 12-gauge wire on a 30-amp circuit, as it may not provide sufficient current carrying capacity and can pose safety risks.

Can ground wire be larger than power?

• Yes, in some cases, ground wires can be larger than power conductors to ensure safety and compliance with electrical codes.

What gauge wire for a refrigerator?

• A typical refrigerator can be powered by a 15-amp circuit with 14-gauge wire, but check the manufacturer’s specifications for precise requirements.

Is it OK to mix wire gauges?

• Mixing wire gauges on the same circuit is generally not recommended, as it can lead to uneven current distribution and potential safety issues.

What is the formula for cable sizing?

• The formula for cable sizing involves considering factors like current load, voltage drop, cable material, and insulation type. Specific formulas are available in electrical codes and standards.

What does AWG stand for on wire?

• AWG stands for American Wire Gauge, a standardized system for measuring wire size.

Does increasing wire size increase amperage?

• Increasing wire size (cross-sectional area) can often increase the ampacity or current carrying capacity of the wire.

What is the formula for the current carrying wire?

• The formula for current carrying capacity depends on cable specifications and is typically provided by cable manufacturers or electrical codes.

Is the thickness of copper wire the same as the current?

• The thickness (gauge) of copper wire is related to its current carrying capacity, with thicker wires generally able to carry more current.

How much current can 50 sq mm cu cable carry?

• A 50 mm² copper cable can typically handle around 100-125 amps, depending on specific conditions.

How much current can a 4 sq mm cable carry?

• A 4 mm² cable can typically handle around 16-20 amps, depending on various factors.

How much current can 4 sq mm al cable carry?

• A 4 mm² aluminum cable can typically handle around 12-16 amps, depending on specific conditions.

Can I use a 2000w load with a 1.5 mm wire?

• Using a 1.5 mm² wire for a 2000W load may not be safe. Larger wire sizes are recommended to accommodate the current and prevent overheating.

What is the current rating of 2.5 mm 5 core flex cable?

• A 2.5 mm 5-core flex cable can typically handle around 20-25 amps under standard conditions.

How many amps is a 2.5 mm 3 core cable?

• A 2.5 mm 3-core cable can typically handle around 20-25 amps under standard conditions.

What is the amp rating of 2.5 mm auto cable?

• The amp rating of a 2.5 mm auto cable depends on the specific cable and its intended automotive application.

Why is 2.5 mm preferred than 1.5 mm in electrical wiring?

• A 2.5 mm wire is preferred over a 1.5 mm wire when higher current carrying capacity is required for electrical circuits, ensuring safety and compliance with electrical codes.

Is 4mm cable OK for 32 amps?

• A 4 mm² cable can generally handle a 32-amp load, but it’s essential to consider other factors, such as installation conditions and local regulations.

What are the 4 types of carrying capacity?

• Carrying capacity can refer to different contexts, including ecological, electrical, and structural. In electrical contexts, it relates to the ability of a cable to carry current.

What is the carrying capacity rule?

• The carrying capacity rule is a guideline or regulation that defines the maximum current that a cable, wire, or conductor can safely handle under specific conditions.

What is maximum load current?

• Maximum load current refers to the highest current that a circuit or electrical component can safely carry without exceeding its rated capacity.

How much is the maximum load current?

• The maximum load current varies depending on the specific electrical component, circuit, and its design specifications.

What is your load capacity?

• Load capacity depends on the context and can refer to the maximum weight or current that a system, structure, or component can handle.

How many watts is 100 amps?

• Watts can be calculated by multiplying volts by amps. For example, at 120 volts, 100 amps is equal to 12,000 watts (12 kW).

What is a load calculator?

• A load calculator is a tool or software used to determine the electrical load or power consumption of a circuit, system, or building.

What is the relationship between current and load?

• Current is a component of the electrical load. The load represents the total power or current demand of a circuit or system.

How much current can 24 AWG carry?

• A 24 AWG wire can generally handle around 0.5-2 amps, depending on various factors.

What gauge cable can safely carry 20 amp of current?

• A 12-gauge cable is typically used to safely carry 20 amps of current.

How much current can 18 AWG carry?

• An 18 AWG wire can generally handle around 3-7 amps, depending on specific conditions.

Can I use 2 AWG wire for 200 amp service?

• A 2 AWG wire is generally not suitable for a 200 amp service, as larger wire sizes are required to accommodate the high current.

Will 2 gauge wire fit in a 50 amp breaker?

• A 2-gauge wire can typically be used with a 50 amp breaker, but it should match the breaker’s specifications and local electrical codes.

How far will 6-gauge wire carry 50 amps?

• The distance a 6-gauge wire can carry 50 amps depends on factors like voltage drop and local regulations. A rough estimate is around 50-70 feet.

Will 8 AWG carry 50 amps?

• An 8 AWG wire is typically not suitable for carrying a constant 50-amp load. Larger wire sizes are recommended.

Can 4 wire carry 100 amps?

• A 4-gauge wire can typically carry 100 amps or more, but it should match the specific application and be in compliance with electrical codes.

Can 8 gauge wire handle 100 amps?

• An 8-gauge wire is generally not suitable for a constant 100-amp load. Larger wire sizes are required.

Can 2 AWG handle 100 amps?

• A 2 AWG wire can generally handle 100 amps or more, depending on specific conditions and compliance with electrical codes.

How many amps can 22 AWG wire handle?

• A 22 AWG wire can typically handle around 3-5 amps.

What is the maximum amps on a 2.5 cable?

• The maximum continuous current capacity for a 2.5 mm² cable is typically around 20-25 amps.

How many amps can 1.5 twin and earth carry?

• A 1.5 mm² twin and earth cable can typically handle around 12-16 amps under standard conditions.

How many amps is 2.5 SWA?

• A 2.5 mm² Steel Wire Armored (SWA) cable can typically handle around 20-25 amps, considering standard conditions and regulations.