UL 1663
For UL 1663, standard title is Electric Hot Tubs, Spas, and Associated Equipment; status is no longer recognized, recorded from its source on 2026-08-10.
- Test standard
- UL 1663 verified
- Standard title
- Electric Hot Tubs, Spas, and Associated Equipment verified
- Status
- no longer recognized our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
UL 1663 | Electric Hot Tubs, Spas, and Associated Equipment |
— osha.gov, retrieved 2026-08-10
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/standards-no-longer-recognized