Class??? in Article 500??
Kerosene is not generally considered to create a classified location.
Looked in 2005 NEC Handbook Page 658 (KEROSENE) is there.Flash Point 72% C. looks like Class 2 (A)or Class 1 Division Group D. ?? listed two places. Check it our .
Theres an Area with Diesel Fuel, & Kerosene.
Diesel Fuel I think NO.
Kerosene looks like yes .
Any comments ????
K-1 maybe, kerosene is a generic term, it would depend on the product. The oil company should be able to tell you flash point
Ernie:
Based on a quick read, I'm leaning to "same as diesel". If I had to make an official 'call'; I would do some additional research.
Careful here ... home oil heating units do not require any "haz loc" wiring - and kerosene / fuel oil / diesel / jet fuel are all essentially the same thing. Nor should we forget the sundry decorative oil-filled 'candles' that are actually filled with scented kerosene.
Yoopersup,
What sort of an installation is this referring to?
I know for a fact that choppers I have flown run on a variant of Kerosene and it has a flash point of about 250°C.
One other thing I do know, through experience as a FF, is that kerosene has the habit to change from a liquid to vapour very easily, about the same as propane, but not with the explosive force.
Unlike propane, the fumes from kerosene will drift upwards.
Looked it up on the net . Flash point 37-65c .
Auto Ignition Temperature 220C
Still Page 658 NEC Code Handbook info????
Class 1 division group D
Flash point 72
Class zone group IIA
Location is Storage Deisel & Kerosene.
Yoop:
Yes, I read the Handbook info & agree with you on that. There's a lot of info that has to be read regarding that table, which I have not read due to time constraints. I have not had a job with kero dispensers, so I have no 'field' quick answer for ya.
Perhaps reach out a PM to 'Walrus'...he's a service station guy.
Yoop:
Yes, I read the Handbook info & agree with you on that. There's a lot of info that has to be read regarding that table, which I have not read due to time constraints. I have not had a job with kero dispensers, so I have no 'field' quick answer for ya.
Perhaps reach out a PM to 'Walrus'...he's a service station guy.
If my memory serve me right the Kenerose dispensers if more than 40 feet away from gazoline pumps it is not a Haz location but if grouped with gaz pump heck no it must have haz location plus haz location fittings as well.
Merci,Marc
Some time ago, the code committee addressed the issue of "who decides?"
Ultimately, they settled for language saying a "qualified person" has to make what is very much a judgement call.
Who is a 'qualified person?' The texts in my apprentice program state explicitly that it is NEVER the electricians' responsibility. (I might quibble with that, but that's another discussion). An earlier attempt tried to say "Professional Engineer," but engineer schools simply so not address this topic, nor do most engineers have any experience in the area.
Two areas have plenty of 'qualified' people. First, the ISA, or 'instrumentation society,' certifies the folks who do the control work in the oil and chemical industries; you can be sure these folks have the necessary background. Then, there are the insurance companies (especially Factories' Mutual), whose risk assessment folks know the topic well.
The rest of us .... electricians, inspectors, etc., ... are pretty much out of the loop, unless our specific experience has educated us.