sparkync
Senior Member
- Location
- North Carolina
I have a job coming up where I will need to wire for a propane tank for a camper business. Can anyone help me on the requirements? I believe they are class 1 division 2 group D. Thanks for the help."
wiring for propane tank
- Thread starter sparkync
- Start date
- Status
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
The best help I can give you is to start by carefully reading articles 500 and 501.
My understanding is that the area immediately around the propane dispensing station is Division 1. But, I don't deal with propane on any regular basis so I do not know for certain.
sparkync
Senior Member
- Location
- North Carolina
I guess forget about Group D. Just got that from somebody else. I don't see a Group D in the code.
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
(4) Group D. Flammable gas, flammable liquid?produced
vapor, or combustible liquid?produced vapor mixed with
air that may burn or explode, having either a maximum
experimental safe gap (MESG) value greater than 0.75 mm
or a minimum igniting current ratio (MIC ratio) greater
than 0.80.
sparkync
Senior Member
- Location
- North Carolina
Sorry. Just getting into the requirements. I haven't spent a lot of time in the "hazardous location" wiring.
Thanks
Thanks
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
I have to assume you are dealing with a bulk tank and a pump that is used for filling smaller containers on vehicles/trailers, or even portable containers.
Art 514 possibly applies. Even if doesn't your application is still very similar to what 514 does apply to.
Otherwise you will have Class 1 Division 1 and Division 2 locations in the vicinity of this. Division 2 locations are likely fairly limited and you probably treat everything in classified area as division 1 anyway, that is if this setup is outdoors.
Should it be indoors you get a big can of worms with not only electric codes but most likely with gas codes and other building/fire codes. Ventilation does help with the complexities, but you must be able to assure that the ventilation is working also.
Any enclosure that contains parts that normally produce arcing during operation must be explosion proof and have properly applied seals on all entries to those enclosures. Seals must also be applied where you leave the classified area - even if no explosion proof items were needed within the classified area.
Cost is significantly less if you can provide remote motor controllers (especially where you need a starter/contactor type of controller) in non classified areas then to put them in hazardous location enclosures.
Art 514 possibly applies. Even if doesn't your application is still very similar to what 514 does apply to.
Otherwise you will have Class 1 Division 1 and Division 2 locations in the vicinity of this. Division 2 locations are likely fairly limited and you probably treat everything in classified area as division 1 anyway, that is if this setup is outdoors.
Should it be indoors you get a big can of worms with not only electric codes but most likely with gas codes and other building/fire codes. Ventilation does help with the complexities, but you must be able to assure that the ventilation is working also.
Any enclosure that contains parts that normally produce arcing during operation must be explosion proof and have properly applied seals on all entries to those enclosures. Seals must also be applied where you leave the classified area - even if no explosion proof items were needed within the classified area.
Cost is significantly less if you can provide remote motor controllers (especially where you need a starter/contactor type of controller) in non classified areas then to put them in hazardous location enclosures.
- Status