Cable Size Selector
Select the correct cable cross-section or AWG size for any load based on current-carrying capacity and voltage drop.
BEng Mechanical Engineering (Hons), CMIOSH, LEEA Member
Mechanical engineer and certified lifting equipment examiner with 18 years in heavy industry, structural steelwork, and crane operations across construction and resources sectors.
1 April 2025
Professional verification required
These calculations are provided for estimation and educational purposes only. Results must be verified by a suitably qualified and licensed engineer before use in any design, specification, or construction context. Numly accepts no liability for decisions made on the basis of these results.
Cable selected for design current Ib ≤ In ≤ Iz; voltage drop ≤ 3% lighting, 5% other per Appendix 12
Institution of Engineering and Technology (IET)
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