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As a rough estimate, for medium voltage cables directly buried in earth, I use 2 A / mm^2 for copper conductors, and 1.2 A/mm^2 for aluminum conductors.

However, the installed capacity of a cable is mostly dependent on how much heat can be dissipated to its surroundings, and ultimately the maximum temperature of the insulation material.

For this reason, it is important to know how the cable will be installed, what conductor is used (Al or Cu), the cable insulation (for both thickness and operating temperature limits), soil thermal resistance (if buried), and if there are other heat sources (cables, process pipes, incident solar radiation, etc) are nearby.

There are several cable manufacturers that provide reference current ratings for nominal installations. Check Nexans, Prysmian, or Okonite (US dimensions).

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14y ago
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9y ago

695 amps for a 4-core armoured cable.

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12y ago

300A

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Q: What is the current carrying capacity of 185 Sq mm?
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What is the current carrying capacity of 185 sq mm copper?

170A


What is the current carrying capacity of 1 sq mm to 400 sq mm above?

The current carrying capacity of a conductor depends on various factors such as the material, temperature, and installation conditions. Typically, for copper conductors in free air, the current carrying capacity ranges from around 11 amps for 1 sq mm to 450 amps for 400 sq mm. However, these values can vary depending on the specific application and standards being followed.


What is the current carrying capacity per pole of 3.5 core 300 sq mm xlpe cable?

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35 sq mm copper wire current carrying capacity?

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4 sq mm copper cable current carrying capacity?

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What is the current carrying capacity of 120 sq mm copper conductor?

1 sq..mm have max. capacity is 10 ampere if these are of copper approximately than 120 sq..mm having current carrying capacity is 1200 ampere


What is the Current carrying capacity of 95 sq mm 4 core aluminium cable?

2.5 sqmm cu cable current carrying capacity is 19 amps.


What is the maximum current capacity of 4 sq mm copper wire?

I can say it is 29 Amps.But again it depends on the cable length.The more the cable length is the less the current carrying capacity will be.


What is the current rating of 185 sq mm of aluminium?

300a


What is the current carrying capacity of 35 sq mm copper wire?

A 35 sq mm copper wire with an insulation factor of 75 or 90 degrees C is rated at 115 and 120 amps respectively.


How can calculate the current capacity of 2.5 sq mm wire?

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What is the maximum current carrying capacity of 16 sq mm copper wire?

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