• Codes
  • Features

    Features Overview

    Go to features
    Reference

    Reference.

    A reliable and up-to-date source of codes.
    Research

    Research.

    Rapidly and efficiently calculate project parameters.
    Collaboration

    Collaboration.

    Get everyone on the same page and streamline code research.
    Workflows
    Architects
    Architects
    General Contractors
    General Contractors
    Building Official & Plans Examiners
    Building Official & Plans Examiners
    Inspectors
    Inspectors
    Owners
    Owners
    Subcontractors
    Subcontractors
    Code Consultants
    Code Consultants
  • Pricing
  • Login
  • Sign Up
Sign Up
Login
  • Code Library
  • Features
  • Pricing
  • About
  • Careers
  • Help
  • Contact
  • Terms
  • Privacy
Sign Up
Upgrade to Premium
Code calculators: Code Calculators automatically generates a detailed list of requirements.
REFERENCE
Amendment Styling
Industry-leading search
Code diagrams
RESEARCH
Code calculators
Filter by topic
Code compare
Code sheet exports
COLLABORATION
Team projects
Bookmarks
Comments
START 2 WEEK FREE TRIAL
Have an account? Sign in
// CODE SNIPPET

[F] 502.5 Valve-Regulated Lead-Acid Batteries in Cabinets

Mechanical Code 2015 of Pennsylvania > 5 Exhaust Systems > 502 Required Systems > 502.5 Valve-Regulated Lead-Acid Batteries in Cabinets
JUMP TO FULL CODE CHAPTER
Valve-regulated lead-acid (VRLA) batteries installed in cabinets, as regulated by Section 608.6.2 of the International Fire Code, shall be provided with ventilation in accordance with Section 502.5.1 or 502.5.2.

[F] 502.5.1 Hydrogen Limit in Cabinets

The cabinet ventilation system shall be designed to limit the maximum concentration of hydrogen to 1.0 percent of the total volume of the cabinet during the worst-case event of simultaneous boost charging of all batteries in the cabinet.

[F] 502.5.2 Ventilation Rate in Cabinets

Continuous cabinet ventilation shall be provided at a rate of not less than 1 cubic foot per minute per square foot (cfm/ft2) [0.00508 m3/(s • m2)] of the floor area covered by the cabinet. The room in which the cabinet is installed shall be ventilated as required by Section 502.4.1 or 502.4.2.

[F] 502.5.3 Supervision

Mechanical ventilation systems required by Section 502.5 shall be supervised by an approved central, proprietary or remote station service or shall initiate an audible and visual signal at a constantly attended on-site location.

Related Code Sections


502.5 Exhaust Systems, Valve-Regulated Lead-Acid Batteries in Cabinets
Valve-regulated lead-acid (VRLA) batteries installed in cabinets, as regulated by Section 608.6.2 of the International Fire Code , shall be provided ...
Mechanical Code 2009 of Pennsylvania > 5 Exhaust Systems > 502 Required Systems > 502.5 Valve-Regulated Lead-Acid Batteries in Cabinets
502.5 Exhaust Systems, Valve-Regulated Lead-Acid Batteries in Cabinets
Valve-regulated lead-acid (VRLA) batteries installed in cabinets, as regulated by Section 608.6.2 of the International Fire Code , shall be provided ...
Mechanical Code 2015 of Pennsylvania > 5 Exhaust Systems > 502 Required Systems > 502.5 Valve-Regulated Lead-Acid Batteries in Cabinets
(D) Equipment for General Use, Top Terminal Batteries
, provides guidance for top clearance of valve-regulated lead-acid batteries, which are commonly used in battery cabinets ...
National Electrical Code 2017 of Pennsylvania > 4 Equipment for General Use > 480 Storage Batteries > 480.10 Battery Locations > (D) Top Terminal Batteries
480.10 Equipment for General Use, Battery Locations
for top clearance of valve-regulated lead-acid batteries, which are commonly used in battery cabinets ...
National Electrical Code 2017 of Pennsylvania > 4 Equipment for General Use > 480 Storage Batteries > 480.10 Battery Locations
Article 480 Equipment for General Use, Storage Batteries
guidance for top clearance of valve-regulated lead-acid batteries, which are commonly used in battery cabinets ...
National Electrical Code 2017 of Pennsylvania > 4 Equipment for General Use > 480 Storage Batteries
Help Contact Us Privacy Terms
Search
Search
Don't miss relevant code. Quickly locate sections across your jurisdiction.
Code Calculators
Code Calculators
Code calculators automatically generate a detailed list of requirements.
Shared projects
Shared projects
Projects provide a dedicated space to collaborate on code research.
Code diagrams
Code diagrams
Unpack the code through illustrations and descriptions.
Code Compare
Code Compare
Highlight differences between any two building codes.
Code sheet exports
Code sheet exports
Generate a code sheet that integrates with your drawing set.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
VISIT PRICING
UpCodes Premium
Leverage the full code compliance platform.
START 2 WEEK FREE TRIAL PRICING