DC Electrical Calc
Help with DC Electrical Calc. If something does not look right, tell us — a wrong number is the one thing this app cannot afford. DC Electrical Calc 的使用帮助。如果结果看起来不对，请告诉我们 —— 算错是这类工具唯一不能容忍的问题。
Product page · Privacy Policy · iPhone and iPad 产品页 · 隐私政策 · iPhone 与 iPad
Contact us联系方式
Email support@ai123.xyz and we will reply within two business days. Please include your device model, your OS version, and the inputs you used. 请发邮件至 support@ai123.xyz，我们会在两个工作日内回复。请附上设备型号、系统版本和你输入的数据。
Frequently asked questions常见问题
Does the app need an internet connection?App 需要联网吗？
No. All reference tables and formulas are stored inside the app. It works with no signal and in airplane mode.不需要。所有参考表和公式都内置在 App 中，没有信号或开启飞行模式都能正常工作。
Which standards do the reference tables come from?参考数据来自哪些标准？
The tables are sourced from published electrical standards, and the edition used is stated on the data sources screen inside the app. Standards are revised periodically; we update the data when a new edition is published and note the change in the release notes.数据来自公开的电气标准，App 内的“数据来源”页面会标明所用版本。标准会定期修订，新版发布后我们会更新数据，并在更新说明中注明。
Why does my result differ from another calculator?为什么我的结果和其他计算器不一样？
Most differences come from the assumptions, not the arithmetic: conductor material, the temperature rating of the insulation, the voltage drop limit you selected, and whether the distance entered is one-way or the full circuit length. Tap "Show calculation" on any result to see exactly which values were used.差异通常来自假设条件而不是算错：导体材质、绝缘温度等级、你设定的压降上限，以及输入的距离是单向还是整个回路长度。在任意结果页点“查看计算过程”就能看到实际代入的数值。
I think a value in the app is wrong.我认为 App 里某个数值是错的。
Please email us with the value, the screen you saw it on, and the source you are comparing against. Data corrections take priority over feature work — a wrong table is a safety issue.请发邮件说明：该数值、你看到它的页面，以及你用来对照的来源。数据修正的优先级高于新功能 —— 错误的表格是安全问题。
Does the app collect my data?App 会收集我的数据吗？
No. The app has no accounts, no analytics and no advertising, and it does not transmit your inputs anywhere. See the Privacy Policy for details.不会。App 没有账号系统、没有统计分析、没有广告，也不会把你的输入发送到任何地方。详见隐私政策。
Refunds and purchases退款与购买
Purchases are processed by Apple, and refunds are handled by Apple under their standard policy. You can request one at reportaproblem.apple.com.购买由 Apple 处理，退款按 Apple 的标准政策执行。可在 reportaproblem.apple.com 申请。