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    • The Code Authority®

    The Code Authority®

    Knowledge Center

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    Knowledge Center

    Information and tools to build your expertise in compliant installations.

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    Welcome to the Knowledge Center

    Explore a comprehensive hub of resources designed to help keep you informed and code-compliant. From fire safety to building regulations and electrical standards, our Knowledge Center gives you tools to help you provide safer, sustainable installations that comply with applicable codes.

     

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    hvac checklist

    HVAC System Installation and Inspection Support Checklists

    Two checklists from UL Solutions created to help support the safe installation and inspection of HVAC systems containing...
    hospital grade power steps

    Hospital Grade Power Strips

    UL Solutions Certifies hospital grade power strips according to UL 2930, the Standard for Cord-and-Plug-Connected Health...
    UL 1487

    New UL Standard Published: UL 1487, Battery Containment Enclosures

    Learn about the first edition of UL 1487, the Standard for Battery Containment Enclosures, a binational standard for the...
    object on fire

    Water Mist Fire Protection for One and Two Family Homes

    UL Solutions Certified a water mist fire protection system unit intended to detect and identify the specific location of...

    Lightning Protection Application Guide

    The need for certified lightning protection is increasing, and this guide looks at the requirements that support a...
    LED tubes

    FAQ - UL Certified LED Retrofit Luminaire Conversion Kits

    Learn how retrofit luminaire conversion kits affect UL Listing and what to consider when working with a retrofitted...
    door lock

    Locking Configurations for Access and Egress Control

    Learn about achieving code compliance with UL Certified products while allowing free egress and still supporting...

    Cross Bracing in a Wall Assembly

    UL Solutions offers an overview of cross-bracing the stud cavity and provides answers to two common questions.

    Enhancements to Numbering System for Steel Stud Wall Designs

    A new numbering system provides a clearer picture of the fire resistance rated assembly type based on construction...

    Deadfront and Deadfront Replacement Guide

    A guide to deadfront covers, and their certification, listing and classification.
    person on worksite

    Getting Started with UL Standards

    UL Standards play an important role in achieving safe, code-compliant installations. Code authorities can benefit from...

    Finding UL Listed and Certified Fire-Rated Products with UL Product iQ®

    Use these instructions to create your UL Product iQ account and search the certification database for UL fire-rated...

    National Electrical Code (NEC) Search

    Learn how to access the UL Product iQ® National Electrical Code (NEC) search for correlations among UL Certified...

    Understanding Fire Rated Ducts

    Explore the different types of fire-rated ductwork and how to find the right fire-rated duct solution.

    Carbon Monoxide Alarm Considerations for Code Authorities

    Obtain a basic understanding of CO poisoning, CO alarms, how they are Listed, and how they are to be installed and...

    Plywood Panels in UL Fire-Resistant Wall Assemblies

    Learn the criteria under which plywood panels can be added to a UL fire-resistance rated wall assembly to increase...

    Line Side Connectors

    Learn NEC® requirements for wire connectors used for splicing or tapping conductors on the line side of service...

    Evaluation Reports

    Learn about evaluation reports provided by UL Solutions to support guidance in determining compliance with code...

    UL Solutions Numbering Systems for Penetration Firestop Systems and Joint Systems

    Explore UL Solutions numbering systems for penetration firestop and joint systems to support accurate identification and...

    UL 142 Aboveground Flammable Liquid Tanks

    Understand the certification and key installation considerations and key installation considerations applicable to...

    Panelboards - Residential and Commercial Application Guide

    A guide to panelboards and determining their suitability in specific installations and addressing concerns related to...

    Wire Cable and Marking Guide

    A guide to determining the suitability of UL Certified, Listed, Classified and Verified wire and cable for use in a...

    Membrane Penetrations in Fire Resistance Rated Walls: Key Considerations and Standards

    Explore membrane penetrations in fire resistance rated walls, focusing on key standards, and installation techniques.

    Molded Case Circuit Breaker – Marking and Application Guide

    A guide to the certification, listing, and classification of molded case circuit breakers. Includes sample marks,...

    Doors, Windows and Related Hardware Application Guide

    A guide to locating, specifying, or verifying UL-certified doors, windows, and hardware that meet model code...

    Dampers Marking and Application Guide

    A guide to duct fire dampers and the differences in damper CFM design for safety and adherence to standards in HVAC...

    Grounding and Bonding with Concentric and Eccentric Knockouts

    Learn NEC® grounding and bonding requirements for concentric and eccentric knockouts in electrical enclosures. Help to...

    Resources, support, and expertise to help you when you need it, wherever the job takes you. Join the community today.

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