pnunley
Member
- Location
- Beltsville, MD USA
It is my understanding that Diesel fuel storage area falls under Class 1 Division 2. I have to purchase and install unit heaters in the ceiling. I am looking at 501.135(B)(1). If I use item 1 then I can use a 5KW unit heater which has a maximum temperature of 163 degrees Celsius through a high limit. According to what I read Diesel has an autoignition temperature of 256 degrees Celsius x 80% = 205 deg. C.
Since the heater max temp is less than 80% of the autoignition temp then I can use a regular unit heater and not a Class 1 Div 1 heater. Correct?
Note: I am replacing two existing and adding two so I wanted to make sure the original installation was correct as well.
Thank you
Since the heater max temp is less than 80% of the autoignition temp then I can use a regular unit heater and not a Class 1 Div 1 heater. Correct?
Note: I am replacing two existing and adding two so I wanted to make sure the original installation was correct as well.
Thank you