Intry Verified receipt

Is the Intry Wire Size Calculator accurate and NEC compliant?

The provenance receipt for the Intry Wire Size Calculator: the exact authority its values derive from, the edition they are keyed to, who has final say, and what our automated checks hold them against, rebuilt from their cited source.

The receipt

Calculated from

NEC Table 310.16 · NEC 210.19(A) and 210.20(A) · NEC 110.14(C) · NEC 310.15(B)(1) and 310.15(C)(1) · NEC 240.6(A) and 240.4(B) · NEC 240.4(D) · NEC Table 250.122 (NEC 2023). Reused verbatim from the locked engine, never re-written for this page.

Checked

Before any release, an automated check rebuilds the calculated figures from the locked engine that produces them and holds each one against the source it cites, so a number answers to its source and not merely to itself. As of the current build that suite holds 23740 checks, and this page has to clear them too. This is our own deterministic gate, not a third-party audit.

Runnable

Exposed at the Intry MCP endpoint. An AI assistant can run this calculator, and before each release an automated check confirms the answer it returns is identical to the one the website's own engine produces.

Final say

Your AHJ and local amendments have final say. Confirm before rough-in.

Frequently Asked Questions

Use it