Editorial Policy - Standard Clarity

This policy describes how the calculators and reference content on Standard Clarity are produced, checked, and kept current.

Sources

Every tool and guide is based on published, primary sources: the engineering standards themselves, such as IPC-2221, IPC-2152, IEC 60529, IEC 60664, UL 94 and the NEC, and the equations and tables defined within them. Where a standard is paraphrased or summarized, it is to explain method and intent. Official standards texts are not reproduced and remain the property of their publishers.

How calculations are produced and checked

The standard's own formula is used wherever one exists, with its published constants.
Results are verified against worked examples and known reference values before a tool is published.
Where a standard presents its data as charts rather than a closed formula, any interpolation model used is identified and its limits are stated.
The governing standard and clause are shown on each tool, so any figure can be traced back to its source.

Accuracy and validity

Standards are derived under defined conditions, and results outside those conditions are extrapolations. Each tool carries the validity range of its method and warns when an input falls outside it. Many methods are deliberately conservative, and where a newer standard gives a different result for the same question, both are noted. Results are an engineering reference and a starting point, not a substitute for the standard or for professional judgment.

When standards disagree

For some questions, more than one standard applies and they do not agree. IPC-2221 and IPC-2152 for trace current capacity are the clearest example. In those cases the tools present the established method by default, note where the alternative differs, and link to a guide explaining which to use and why. We do not silently pick one and hide the other.

Corrections and updates

Accuracy comes before completeness. Standards are revised over time, and content is reviewed and updated to reflect meaningful changes. If you find an error in a calculation, a formula, or a reference value, please report it through the contact page. Corrections to the numbers are prioritized and made promptly.

Independence

Editorial decisions, including what a tool calculates, which method it uses, and what it reports, are made on technical grounds alone and are not influenced by any commercial relationship. Standard Clarity is independent and not affiliated with any standards or certification body. Standard names are used only to identify the documents the tools are based on.