314.27
- Thread starter Rick 0920
- Start date
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
My buddy has one of these in his garage. It does a decent job of moving air. I was suprised.
Does he have a fan box installed ? If not we're sending the inspector over
He does not. It was just a keyless porcelain lamp holder before the fan installl.Does he have a fan box installed ? If not we're sending the inspector over
Frank DuVal
Senior Member
- Occupation
- Electrical Contractor, Electrical Engineer
That says box shall be required to support a luminaire of 50 lb. 6-32 screw tensile strength is 550 lbs. Two of them , then 1100 lbs strength. NEC low limit is less than 1/20th of that.
I would worry more about the strap that comes with the fixture...
I have always been told that a box has to have 8-32 screws to be approved for light fixture support. And even then I have been turned down for using round 'cut in' boxes with 8-32 screws to support ceiling fixtures, as they are only UL listed for 'wall support' up to 10 lbs.That says box shall be required to support a luminaire of 50 lb. 6-32 screw tensile strength is 550 lbs. Two of them , then 1100 lbs strength. NEC low limit is less than 1/20th of that.
I would worry more about the strap that comes with the fixture...
- Location
- Illinois
- Occupation
- retired electrician
It is the "cut-in" part that is the issue. That does not provide enough support for a ceiling light fixture. Without an attachment to the building structure, they have only been investigated for the support of up to six pounds.