hotline1
Member
- Location
- New Jersey
A UL labeled powered HEPA filter unit, 120 volt, designed to be installed in a 2x4 drop ceiling, equipped with a factory 5' cord and molded plug.
Design and intent is for a clean room enviornment.
In a discussion with a local AHJ, the following comments were noted:
Article 408 prohibits cord & plug connections above a drop ceiling.
Cord is prohibited within a plenum rated ceiling.
My question; how can an item have a UL label/listing and be in violation of the NEC, if the item is installed "as equipped" from the factory??
This type of HEPA filter unit is designed to filter air thru a drop ceiling (plenum). It is equipped with an external pre-filter, and the unit has two fractional HP fan motors, and a factory speed control, mounted on the top area of the unit.
Any input will be appreciated.
John
[ March 02, 2003, 10:54 PM: Message edited by: hotline1 ]
Design and intent is for a clean room enviornment.
In a discussion with a local AHJ, the following comments were noted:
Article 408 prohibits cord & plug connections above a drop ceiling.
Cord is prohibited within a plenum rated ceiling.
My question; how can an item have a UL label/listing and be in violation of the NEC, if the item is installed "as equipped" from the factory??
This type of HEPA filter unit is designed to filter air thru a drop ceiling (plenum). It is equipped with an external pre-filter, and the unit has two fractional HP fan motors, and a factory speed control, mounted on the top area of the unit.
Any input will be appreciated.
John
[ March 02, 2003, 10:54 PM: Message edited by: hotline1 ]