hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
Designer contacted manufacturer of Underfloor heat cables for big walk in freezer in grocery. The heat cables are underneath walk-in freezer inside the food warehouse.
The manufacturer came back GFPE is required however with freezer floor cable heating system installed in metal conduit under freezer floor, GFPE can cause nuisance trip/alarm and not typically installed. There may be some interpretation of NEC code that states if the system is monitored with alarm GFPE can be eliminated.
I don’t see any exception like that for GFPE. Does anyone here know if there is any in NEC 2014?
The manufacturer came back GFPE is required however with freezer floor cable heating system installed in metal conduit under freezer floor, GFPE can cause nuisance trip/alarm and not typically installed. There may be some interpretation of NEC code that states if the system is monitored with alarm GFPE can be eliminated.
I don’t see any exception like that for GFPE. Does anyone here know if there is any in NEC 2014?