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Two electrical tools, side-by-side. See which fits your task.
Electrical
Look up maximum amperage for wire gauges by insulation type. NEC reference.
Open Cable AmpacityYour specific task is breaker size calculator — formula, units, worked example. Open the page, drop your input, get the result — typically under a second.
Your goal is look up maximum amperage for wire gauges by insulation type. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Breaker Size focuses on breaker size calculator — formula, units, worked example; Cable Ampacity focuses on look up maximum amperage for wire gauges by insulation type. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Breaker Size and Cable Ampacity work without signup. We only ask for an email if you decide to subscribe to a paid plan.