23.1301—Function and installation.
Each item of installed equipment must—
(a)
Be of a kind and design appropriate to its intended function.
(b)
Be labeled as to its identification, function, or operating limitations, or any applicable combination of these factors;
(c)
Be installed according to limitations specified for that equipment; and
(d)
Function properly when installed.
Code of Federal Regulations
[Amdt. 23-20, 42 FR 36968, July 18, 1977]