January 22, 2026
From the 2024 UPC Illustrated Training Manual, Chapter 4, PLUMBING FIXTURES AND FIXTURE FITTINGS
418.2 Strainer. Floor drains shall be considered plumbing fixtures and each such drain shall be provided with an approved-type strainer having a waterway equivalent to the area of the tailpiece. Floor drains shall be of an approved type and shall provide a watertight joint on the floor.
Floor drains are plumbing fixtures and are intended to collect accidental spills, overflows or water utilized for washing the floor surface. They are not intended as secondary fixtures that receive waste from primary fixtures that require either an airgap or an air break. That fixture is the floor receptor or floor sink. Each has a strainer and a flange to provide for the collection of leakage, which passes by the strainer and may cause damage to the floor below.
From the 2024 UMC Illustrated Training Manual, Chapter 5, EXHAUST SYSTEMS
512.2 Electrical Equipment. Wiring systems of any type shall not be installed in ducts. [NFPA 96:9.2.1]
Wiring systems, motors, lights and other electrical devices shall not be installed in the exhaust ducts or hoods or located in the path of travel of exhaust products unless they are specifically approved for such use. Any excess heat or source of ignition from the operation of an electrical equipment or wiring shall be prohibited unless listed. The listing process evaluates the hazard associated with the operation of the device and ensures operation in a safe manner. The excessive temperature caused by a grease duct during a fire will cause greater risk to short circuiting the electrical components and wiring systems.
(This is not to be considered the official position of IAPMO, nor is it an official interpretation of the Codes.)
IAPMO
IAPMO develops and publishes the Uniform Plumbing Code®,the most widely recognized code of practice used by the plumbing industry worldwide; Uniform Mechanical Code®; Uniform Swimming Pool, Spa and Hot Tub Code®; and Uniform Solar Energy, Hydronics and Geothermal Code™ — the only plumbing, mechanical, solar energy and swimming pool codes designated by ANSI as American National Standards — and the Water Efficiency Standard (WE-Stand)™. IAPMO works with government, contractors, labor force, and manufacturers to produce product standards, technical manuals, personnel certification/educational programs and additional resources in order to meet the ever-evolving demands of the industry in protecting public health and safety.
Last modified: January 22, 2026