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Hi everyone,
I’m working on designing a low-voltage electrical installation using the IEC 60364-5-52 standard, and I have some questions about the correction factors for current-carrying capacity when installing cables.
Case 1: I have two multi-core cables (each with more than one core) placed in a single conduit. This conduit is installed alone, with no other conduits nearby or touching it. According to the IEC 60364-5-52 standard, what is the correction factor for the current-carrying capacity in this case? I found a factor of 0.85 in a table, but I’m not sure if it’s correct.
Case 2: In another scenario, I have one multi-core cable in a single conduit, and this conduit is touching another conduit (the distance between the two conduits is 0). What is the correction factor for this setup?
*
I have 12 single-core cables forming 4 three-phase circuits (each circuit consists of 3 single-core cables for L1, L2, and L3). The cables are arranged in 4 triangular groups, where each triangle contains 3 single-core cables (one three-phase circuit). These 4 triangular groups are placed side by side, touching each other, and the cables are installed on a perforated cable tray.
My questions are: What is the correction factor for the current-carrying capacity in this setup according to IEC 60364-5-52? and Can someone explain the reasoning behind choosing this correction factor?
I’ve attached a data table that I’m referring to for more context. This table lists the correction factors for cables laid in ducts in the ground. I need help confirming if I’m applying the correct factor, or if there’s another table in IEC 60364-5-52 that I should refer to instead.
I’m new to this standard, so any guidance on how to apply these correction factors correctly would be greatly appreciated. Has anyone worked with IEC 60364-5-52 and can share their experience?
Thanks in advance for your help!
I’m working on designing a low-voltage electrical installation using the IEC 60364-5-52 standard, and I have some questions about the correction factors for current-carrying capacity when installing cables.
Case 1: I have two multi-core cables (each with more than one core) placed in a single conduit. This conduit is installed alone, with no other conduits nearby or touching it. According to the IEC 60364-5-52 standard, what is the correction factor for the current-carrying capacity in this case? I found a factor of 0.85 in a table, but I’m not sure if it’s correct.
Case 2: In another scenario, I have one multi-core cable in a single conduit, and this conduit is touching another conduit (the distance between the two conduits is 0). What is the correction factor for this setup?
*
I have 12 single-core cables forming 4 three-phase circuits (each circuit consists of 3 single-core cables for L1, L2, and L3). The cables are arranged in 4 triangular groups, where each triangle contains 3 single-core cables (one three-phase circuit). These 4 triangular groups are placed side by side, touching each other, and the cables are installed on a perforated cable tray.
My questions are: What is the correction factor for the current-carrying capacity in this setup according to IEC 60364-5-52? and Can someone explain the reasoning behind choosing this correction factor?
I’ve attached a data table that I’m referring to for more context. This table lists the correction factors for cables laid in ducts in the ground. I need help confirming if I’m applying the correct factor, or if there’s another table in IEC 60364-5-52 that I should refer to instead.
I’m new to this standard, so any guidance on how to apply these correction factors correctly would be greatly appreciated. Has anyone worked with IEC 60364-5-52 and can share their experience?
Thanks in advance for your help!
