Model codes and standards change over time. Local jurisdictions can adopt different editions and amendments on different schedules.
When the question is whether an existing installation violates an enforceable code, determine the jurisdiction, adopted edition, relevant construction or alteration date when appropriate, and local amendments.
VerifySweep education can teach concepts and research methods, but the technician remains responsible for confirming the source applicable to the specific property.
Use the official source
VerifySweep summarizes concepts for professional education. It does not reproduce or replace copyrighted code or standard text. Consult the official publication for exact requirements.
Educational content only. Codes, standards, listings, manufacturer instructions and local amendments can change which requirement applies to a specific installation.