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3LOW VOLTAGE ELECTRICAL INSTALLATIONS:Methods of installation and current-carrying capacities
based on IEC 60364-5-52 Ed.3
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SUMMARY Methods of installation:
Table A.52.3 Examples of methods of installation providing instructions for obtaining current-carrying capacity
Current-carrying capacities:
Table B.52.1 Installation reference methods forming basis of tabulated current-carrying capacities
Table B.52.2 Current-carrying capacities in amperes for methods of installation in Table B.52.1 :
- PVC insulation/two loaded conductors, copper or aluminium
- Conductor temperature: 70 °C, ambient temperature: 30 °C in air, 20 °C in ground
Table B.52.3 Current-carrying capacities in amperes for methods of installation in Table B.52.1 :
- XLPE or EPR insulation, two loaded conductors/copper or aluminium
- Conductor temperature: 90 °C, ambient temperature: 30 °C in air, 20 °C in ground
Table B.52.4 Current-carrying capacities in amperes for methods of installation in Table B.52.1:
- PVC insulation, three loaded conductors/copper or aluminium
- Conductor temperature: 70 °C, ambient temperature: 30 °C in air, 20 °C in ground
Table B.52.5 Current-carrying capacities in amperes for methods of installation in Table B.52.1 :
- XLPE or EPR insulation, three loaded conductors/copper or aluminium
- Conductor temperature: 90 °C, ambient temperature: 30 °C in air, 20 °C in ground
Table B.52.6 Current-carrying capacities in amperes for installation method C of Table B.52.1 :
- Mineral insulation, copper conductors and sheath - PVC covered or bare exposed to touch
- Metallic sheath temperature: 70 °C, reference ambient temperature: 30 °C
Table B.52.7 Current-carrying capacities in amperes for installation method C of Table B.52.1 :
- Mineral insulation, copper conductors and sheath
- Bare cable not exposed to touch and not in contact with combustible material
- Metallic sheath temperature: 105 °C, reference ambient temperature: 30 °C
Table B.52.8 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 :
- Mineral insulation, copper conductors and sheath/PVC covered or bare exposed to touch
- Metallic sheath temperature: 70 °C, reference ambient temperature: 30 °C
Table B.52.9 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 :
- Mineral insulation, copper conductors and sheath – Bare cable not exposed to touch
- Metallic sheath temperature: 105 °C, reference ambient temperature: 30 °C
Table B.52.10 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 :
- PVC insulation, copper conductors
- Conductor temperature: 70 °C, reference ambient temperature: 30 °C
Table B.52.11 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 :
- PVC insulation, aluminium conductors
- Conductor temperature: 70 °C, reference ambient temperature: 30 °C
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1Methods of installation and current-carrying capacities based on IEC 60364-5-52 Ed.3
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2Methods of installation and current-carrying capacities based on IEC 60364-5-52 Ed.3
SUMMARY
Table B.52.12 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 :
- XLPE or EPR insulation, copper conductors
- Conductor temperature: 90 °C, reference ambient temperature: 30 °C
Table B.52.13 Current-carrying capacities in amperes for installation methods E, F and G of Table B.52.1 :
- XLPE or EPR insulation. aluminium conductors
- Conductor temperature: 90 °C, reference ambient temperature: 30 °C
Table B.52.14 Correction factor for ambient air temperatures other than 30 °C to be applied to
the current-carrying capacities for cables in the air
Table B.52.15 Correction factors for ambient ground temperatures other than 20 °C to be applied to
the current-carrying capacities for cables in ducts in the ground
Table B.52.17 Reduction factors for one circuit or one multi-core cable or for a group of more than one circuit,
or more than one multi-core cable, to be used with current-carrying capacities of Tables
B.52.2 to B.52.13
Table B.52.18 Reduction factors for more than one circuit, cables laid directly in the ground
- Installation method D2 in Tables B.52.2 to B.52.5 - Single-core or multi-core cables
Table B.52.19 Reduction factors for more than one circuit, cables laid in ducts in the ground
- Installation method D1 in Tables B.52.2 to B.52.5
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3METHODS OF INSTALLATION
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4METHODS OF INSTALLATION
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5METHODS OF INSTALLATION
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6METHODS OF INSTALLATION
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7METHODS OF INSTALLATION
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8METHODS OF INSTALLATION
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9METHODS OF INSTALLATION
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10CURRENT-CARRYING CAPACITIES
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11CURRENT-CARRYING CAPACITIES
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12CURRENT-CARRYING CAPACITIES
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13CURRENT-CARRYING CAPACITIES
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14CURRENT-CARRYING CAPACITIES
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15CURRENT-CARRYING CAPACITIES
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16CURRENT-CARRYING CAPACITIES
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17CURRENT-CARRYING CAPACITIES
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18CURRENT-CARRYING CAPACITIES
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19CURRENT-CARRYING CAPACITIES
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20CURRENT-CARRYING CAPACITIES
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21CURRENT-CARRYING CAPACITIES
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22CURRENT-CARRYING CAPACITIES
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23CURRENT-CARRYING CAPACITIES
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24CURRENT-CARRYING CAPACITIES
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25CURRENT-CARRYING CAPACITIES
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26CURRENT-CARRYING CAPACITIES
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27CURRENT-CARRYING CAPACITIES
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28CURRENT-CARRYING CAPACITIES
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