[Home](/)/[Resources](/resources)/ANSI Standards US Market ANSIUS complianceULOSHA # ANSI Standards for the US Market: How They Work and When They Are Required ANSI occupies a different structural role in the US standards ecosystem than IEC or CENELEC in Europe. ANSI does not write standards — it accredits standards development organizations and approves standards as American National Standards. Understanding how ANSI fits into US regulatory requirements and when ANSI standards are mandated vs. voluntary is fundamental to navigating US compliance for hardware products. Copy Link[Share on WhatsApp](https://wa.me/?text=https%3A%2F%2Fkrono-labs.com%2Fguides%2Fansi-standards-us-market) [Check my US compliance requirements](/platform/new) ANSI structure ## What ANSI is and how it differs from ISO/IEC ANSI is a private, non-profit organization that coordinates the US voluntary standardization and conformity assessment system. It accredits Standards Development Organizations (SDOs) including UL (for safety), IEEE (for electronics and communications), ASHRAE (for HVAC and energy), and ASME (for mechanical). When one of these SDOs follows ANSI's process requirements, their standard can be designated an American National Standard (ANS) with the ANSI prefix. ANSI itself does not develop technical standards — this is a fundamental difference from how the IEC or CENELEC system works. The US does not have a government body equivalent to CENELEC that creates harmonized standards for regulatory purposes. Instead, US regulators — FCC, FDA, OSHA, DOE — reference specific ANSI standards in their regulations, making compliance with those standards mandatory for the relevant regulated activity. Other ANSI standards are purely voluntary — used by industry for interoperability, quality, or safety purposes without regulatory mandate. When ANSI standards are required ## Regulatory mandates that reference ANSI standards ANSI/IEEE C95.1 (RF Exposure limits): Referenced in FCC rules for RF exposure compliance. Any device subject to FCC SAR or MPE evaluation must comply with the exposure limits in ANSI/IEEE C95.1 as implemented through the FCC's OET 65 bulletin and applicable KDB guidance. ANSI/UL standards for OSHA NRTL listing: OSHA regulations require that electrical equipment in workplaces be listed or labeled by an NRTL. NRTL listing is performed against ANSI/UL standards — for electronics, ANSI/UL 62368-1 is the primary applicable standard. ANSI/NFPA 70 (National Electrical Code): adopted by reference in building codes across all US states; NEC requires listed electrical equipment for building installations, triggering the UL/NRTL listing requirement for plugged-in electronics. ANSI Z535 (Safety color, symbols, and signs): Referenced by OSHA for workplace safety labelling. Relevant for hardware products intended for industrial use that require safety symbols or warning labels on the product or its packaging. ANSI vs. ISO/IEC in multi-market compliance ## How ANSI standards relate to international standards Many ANSI standards are national adoptions of IEC standards, just as EN standards are European adoptions. ANSI/UL 62368-1 is the US adoption of IEC 62368-1 with American National Differences (ANDIFs). Products tested to EN 62368-1 (the EU adoption) can typically achieve ANSI/UL 62368-1 compliance by adding only the ANDIF tests at a US NRTL laboratory — the full test suite does not need to be repeated. For global compliance strategy: commission testing to IEC standards from an ILAC-accredited laboratory, and use the results as the foundation for both EN-based CE marking and ANSI/UL-based US listing, supplementing with ANDIF tests as required. This is significantly more efficient than treating US and EU compliance as independent parallel efforts. ANSI/IEEE 1528 (SAR measurement) is related to IEC 62209-1528 — SAR test reports produced to both standards simultaneously can support both CE marking and FCC authorization SAR compliance. ## Learn this properly, not just for one product In-depth courses and books that teach the process — not a one-off answer you'll need to look up again next time. [Browse courses](/courses)See your free roadmap [Prefer to read? Get the book](/books) ## Frequently asked questions ### What is the difference between an ANSI standard and a UL standard? UL (Underwriters Laboratories) is a Standards Development Organization that develops safety standards. When UL follows ANSI's standards development process and its standard is approved, it becomes both a UL standard and an ANSI/American National Standard — for example, ANSI/UL 62368-1. Some UL standards are not ANSI-approved and carry only the UL designation. The ANSI prefix indicates the standard has gone through ANSI's due process requirements. ### Are ANSI standards legally binding? ANSI standards are voluntary unless referenced in regulations or contracts. US federal and state regulations frequently reference ANSI standards by name, making compliance with the referenced standard mandatory for the regulated activity. For example, NEC compliance (which requires UL-listed equipment) is mandated by building codes adopted under state law. The standard itself is voluntary until the legal mandate applies. ### How do I access ANSI standards? ANSI standards are available for purchase through ANSI's online store (ansi.org) or through the standard developer's own publication service (UL, IEEE, ASHRAE, etc.). ANSI standards are not freely available — they must be purchased. Some organizations provide free read access to standards for non-commercial purposes. Academic institutions often have library subscriptions to standard databases. ### Is ANSI membership required to sell products in the US? No. ANSI membership is for companies and organizations that participate in the US standards ecosystem. Hardware manufacturers do not need ANSI membership to comply with ANSI standards or to achieve NRTL listing. NRTL listing requires compliance with the applicable standard and testing by an OSHA-recognized NRTL — not participation in the standards development process. 🇺🇸 US roadmap for your product Every standard, document, and test that applies — free, no account required. See your free roadmap[ Want an expert to take your product through 🇺🇸 US compliance for you? One consultant from Krono's compliance team takes your product from requirements to legal sale, with a fixed quote before any work starts. See compliance services](/services) Related guides * [UL / NRTL Safety ListingUL certification and NRTL safety listing for the US market explained: what UL marks mean, when they're required, how OSHA-autho…](/guides/ul-nrtl-safety-listing) * [EN 62368-1 ExplainedEN 62368-1 (Audio/Video, IT and Communications Technology Equipment) replaced EN 60950-1 and EN 60065 in 2019 and is now the pr…](/guides/en-62368-1-explained) * [FCC TCB Certification ProcessFCC Certification through an accredited Telecommunications Certification Body (TCB) is mandatory for all intentional radiators.](/guides/fcc-tcb-process) * [IEC/CENELEC Standards and CE MarkingIEC publishes international electrotechnical standards; CENELEC adopts them as EN standards for EU harmonisation.](/guides/iec-cenelec-standards-ce) Educational resource only. ANSI standard requirements are product- and regulation-specific. Verify which ANSI standards apply to your product category and regulatory pathway before committing to a compliance strategy.