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Cable Sizing Assistant
Shortlist a practical conductor size from load, length, environment, and installation method so the first-pass sizing work stays local and readable.
Load, installation, and environment
Recommended size
Candidate shortlistSmallest workable size is listed first
1.5 mm2 Fail
Base 15.0 A, adjusted 10.7 A, drop 27.35%
2.5 mm2 Fail
Base 20.0 A, adjusted 14.2 A, drop 16.75%
4 mm2 Fail
Base 26.0 A, adjusted 18.5 A, drop 10.42%
6 mm2 Fail
Base 34.0 A, adjusted 24.2 A, drop 6.96%
10 mm2 Fail
Base 46.0 A, adjusted 32.7 A, drop 4.14%
Sizing scope
This assistant is a quick shortlist for early engineering review. It applies simple derating factors and voltage-drop screening, but it is not a final code table or certification tool.
Use this tool when
These are the practical situations where this workflow usually earns its keep.
You need to get a quicker first pass on cable sizing inputs.
You want a browser-local pass before taking the preliminary answer into the formal engineering check.
You need a smaller, cleaner review surface during electrical design and coordination work.
Daily workflow acceleration
Cable Sizing Assistant helps when teams need to get a quicker first pass on cable sizing inputs without opening a heavier system or rebuilding the same transformation manually every time.
Review and handoff clarity
A focused output is useful when the next step is taking the preliminary answer into the formal engineering check and the current raw input would otherwise slow down the reviewer or teammate.
Lower-friction local handling
For electrical design and coordination work, keeping the task in the browser is helpful because the source material often does not need to leave the user’s machine just to answer this one question.
Common mistakes to avoid
These are the checks that usually keep the output useful instead of misleading.
Sizing assistance is directional until the team confirms load, installation, ambient, and code assumptions fully.
Treating a quick calculator result as if it replaced the formal engineering record.
Forgetting to verify the assumptions, units, or code basis that sit behind the numbers.
Learn how to use this tool
Shortlist a practical conductor size from load, length, installation method, and derating factors. This guide focuses on how teams use it for electrical design and coordination work when the real job is to get a quicker first pass on cable sizing inputs.
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