Electrical Installation Work: Level 3 by Linsley Trevor;

Author:Linsley, Trevor;
Language: eng
Format: epub
Publisher: CRC Press LLC
Published: 2020-01-15T00:00:00+00:00

Design from first principles

• Design current: Power/Volts

• Protective device (rating available): On-Site Guide Appendix B

• Installation method: On-Site Guide Table 7.1 (ii)

• Circuit correction factors and formula: On-Site Guide Appendix F

• Select cable size (current carrying capacity): On-Site Guide, Table F6

• Volt drop formula: On-Site Guide Appendix F

• Confirm volt drop: On-Site Guide, Table F4 (ii) or F6

• Confirm shock protection is met through loop impedance values: Appendix B Table B6

• Thermal constraint formula from BS 7671: Part 5, Chapter 54.

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