Disclaimer & Terms of Use
Last updated: 9/1/2026
No Professional Advice
The content on this site (including all Plumbing, HVAC, and Electrical reference pages) is provided for general informational and educational purposes only. It does not constitute professional engineering, contracting, or code-compliance advice, and should not be relied upon as a substitute for consulting a licensed plumber, HVAC technician, electrician, engineer, or your local Authority Having Jurisdiction (AHJ).
Codes Change — Always Verify Locally
Pipe sizes, wire ampacities, clearances, and rough-in dimensions vary by jurisdiction, code edition (e.g. NEC, IPC, UPC, IMC, IRC), and local amendments. Values shown here are general references and may not reflect the current adopted code in your area. Before performing installation, repair, or design work, confirm all figures against the current local code and manufacturer installation instructions.
Safety Hazards
Plumbing, HVAC, and electrical systems can involve serious hazards including electric shock, fire, gas leaks, carbon monoxide poisoning, scalding, and water damage. Always de-energize circuits, shut off gas/water supply, use proper PPE, and follow lockout/tagout procedures before performing work. If a task is beyond your skill level, stop and hire a licensed professional.
No Warranty / Accuracy
Content is provided "as is" without warranty of any kind, express or implied, including accuracy, completeness, or fitness for a particular purpose. Reference tables may contain errors, typos, or outdated figures. Cross-check critical dimensions and ratings against manufacturer documentation and official code text before use.
Limitation of Liability
To the fullest extent permitted by law, the creator(s) and operator(s) of this site assume no liability for any damage, injury, code violation, project failure, or financial loss arising from the use of, or reliance on, information presented here. Use of this site and its content is entirely at your own risk.
Personal / Internal Use
This application is intended as a personal reference tool and is not published for public/commercial distribution. It is not a licensed engineering product, has not been reviewed by a code official, and should not be represented as an authoritative code source.