do they still make nema 8 (oil immersed) disconnects 480 volt 3 phase 30 amp

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jcorbin

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romney,wv,usa
Sewer Plant. The engineer has 2 nema 8 480 volt 3 phase disconnects shown for 2 small methanol pumps. Are these still available. I have called square D, Eaton, Siemens and GE, no one makes them. I can't find them on line either. Are they obsolete?
 
Here is a list of NEMA Hazardous Location Enclosures:
You might find another style suitable for your environment
NEMA 7 Underwriters Lab Class 1-Groups C&D -Explosion Proof - Indoors
Type 7 enclosures are for indoor use in locations classified as Class I, Groups A, B, C, or D, as defined in the National
Electrical Code.
Type 7 enclosures shall be capable of withstanding the pressures resulting from an internal explosion of specified gases,
and contain such an explosion sufficiently that an explosive gas-air mixture existing in the atmosphere surrounding the
enclosure will not be ignited. Enclosed heat generating devices shall not cause external surfaces to reach temperatures
capable of igniting explosive gas-air mixtures in the surrounding atmosphere. Enclosures shall meet explosion, hydro-static,
and temperature design tests.
NEMA 8 Underwriters Lab Class 1-Groups C&D -Explosion Proof - Indoors
Type 8 is same as NEMA 7, except the unit is oil-immersed
NEMA 9 Underwriters? Lab Class II - Groups E,F,G - Indoors
Type 9 enclosures are intended for special purpose indoor use in locations classified as hazardous (Class II, Groups E, F, or
G, as defined in the National Electrical Code).
Type 9 enclosures shall be capable of preventing the entrance of dust. Enclosed heat generating devices shall not cause
external surfaces to reach temperatures capable of igniting or discoloring dust on the enclosure or igniting dust-air mixtures
in the surrounding atmosphere. Enclosures shall meet dust penetration and temperature design tests, and aging of gaskets (if
used).
 
Thank you, this gives me something to offer as a option with a nema 3 rating. Some of the data sheets I've seen show nema 8 as rated for outside as well, and show nema 7 and 9 only listed for indoors. I think that is why he chose nema 8 to begin with. I don't think the engineer is very familiar with hazardous locations either. I've just started to get a little familiar with hazardous location requirements, and seeing the multi ratings on these disc. taught me something new as well. Thanks for your help
 
Wow oil bath ... I used to work at a furnace coke plant and had oil bath motor starters. We called them Rowan starters. Possibly make? Never did see a mfg name on them


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