Extension cord ok for powering a garage door opener.

[jsedillo (J Michael Sedillo)]

Can an extension cord be used to power an automatic garage door opener that is hung from the rafters?

[mlarson (Michael Larson, WI Lic. # 1672-106)]

@jsedillo

Can an extension cord be used to power an automatic garage door opener that is hung from the rafters?

Extension cords are meant for temporary use.

[cjacobi (Chris Jacobi, CMI HI01200061)]

@jsedillo

Can an extension cord be used to power an automatic garage door opener that is hung from the rafters?

No…

[jpope (Jeffrey Pope, CMI, CHI, CPI, ICC)]

Sure they “can,” otherwise you probably wouldn’t be asking

However, like Mike said, they are not listed or approved for permanent use. In addition, the manufacturers of the garage door openers consider this an “improper installation” that will void their warranty.

[jsedillo (J Michael Sedillo)]

Thank yew, good answer.

[rmeier2 (Robert Meier)]

Here is the NEC version:

400.8 Uses Not Permitted. Unless specifically permitted
in 400.7, flexible cords and cables shall not be used for the
following:
(1) As a substitute for the fixed wiring of a structure

[mclark2 (Michael Clark, CMI)]

“An extension cord has been used as permanent wiring, which is a fire hazard. Recommend installation of a proper receptacle by a qualified electrician”.