Electrical Conduit Piping Testing and Certification
Ensure compliance and safety with NSF’s third-party certification for conduit pipes, fittings, and bends.
Why choose NSF for conduit certification?
Since 1965, NSF has been a trusted name in the plastic piping industry, protecting public health through rigorous standards development and testing. Now, we bring that same expertise to electrical conduit certification, helping manufacturers meet critical safety and performance standards.
As a Nationally Recognized Testing Laboratory (NRTL) by OSHA and accredited by the Standards Council of Canada (SCC), NSF provides the confidence your customers, regulators, and partners expect.
What we certify
NSF’s Conduit Certification Program includes listing and labeling for:
- ANSI/UL 651 Schedule 40 and 80 Rigid PVC conduit and fittings
- UL 651A for high-density polyethylene (HDPE) conduit
- CSA-C22.2 No. 211.1 and No. 211.2 (Canadian standards)
- SE 31765 – large-diameter PVC electrical conduit
- NEMA TC-2 for electrical polyvinyl chloride (PVC) conduit
- NEMA TC-7 for solid-wall coilable and straight electrical polyethylene conduit.
Our certification process
We guide you through a comprehensive, transparent process to ensure your products meet all applicable standards:
- 1
Formulation review and material testing
We evaluate each compound for compliance, testing for properties such as:
- Tensile strength
- Modulus of elasticity
- Impact resistance
- Deflection temperature
- Flammability
- 2
Product testing
Finished conduit products are tested in NSF labs to verify construction and performance across all trade sizes and schedules.
- 3
Formulation registration
Once approved, you’ll receive an Authorized Registered Formulation document—ensuring only compliant materials are used in certified products.
- 4
Certification marking
Certified products may display the NSF Certification Mark and applicable standard directly on the print string.
Ongoing quality assurance
Certified conduit products are monitored under NSF/ANSI Standard 14, which includes:
- Four unannounced facility audits per year
- Sample collection during inspections for annual product testing.
Ready to get started?
Whether you're seeking certification or have questions about the process, we're here to help.
Resources
NSF/ANSI 14 Certification Scope
ArticleWhile NSF/ANSI 14 is widely recognized for plastic pipes used in potable water systems, its scope extends to various end-uses such as non-potable water systems, heating and cooling systems, fire safety, and more.
The Truth About NSF/ANSI/CAN 61 and PVC Pipes
ArticleThe "Perils of PVC Plastic Pipes" report contains a great deal of misinformation.
Health Effects Monitoring of PVC Pipe and Fittings
ArticleNSF/ANSI/CAN 61 establishes maximum contaminant limits for chemicals leaching from products into drinking water.
NSF Electrical conduit services
Our experts are ready to answer your questions or tailor a quote specific to your products and goals.