what kind of enclosure

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alberto

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good afternoon, can somebody help me?

i need to install 3 panelboards in a room that has 2 jockey pumps.
my question is:

do i need to install the panelboards with enclosure NEMA 3R?

for your help thanks
have a nice day.
 
Re: what kind of enclosure

alerto,
Which one of the following typrs of enclosures fits the description of the environment?
NEMA 3 ? Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, and windblown dust; and that will be undamaged by the external formation of ice on the enclosure.
NEMA 3R ? Same as NEMA 3 excluding protection against windblown dust.
And then there are:
NEMA 4 ? Enclosures constructed for either indoor or outdoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt, rain, sleet, snow, windblown dust, splashing water, and hose-directed water; and that will be undamaged by the external formation of ice on the enclosure.
NEMA 4X ? Same as NEMA 4 including protection against corrosion.
 
Re: what kind of enclosure

And then of course there is NEMA 1 & NEMA 12.

Just because there are pumps in same room does not necessarily mean panelboards have to be in "special" enclosures.

Depends on the complete environment. Or am I missing something.
 
Re: what kind of enclosure

why would being in a room with a couple of pumps require the panelboards to be antyhing other than NEMA1?

Unless you are using the pumps to spray down the panelboards. :)
 
Re: what kind of enclosure

Good point.
Here's NEMA 1,2(usually not an option) and 12:
NEMA 1 ? Enclosures constructed for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment and to provide a degree of protection against falling dirt.
NEMA 2 ? Same as NEMA 1 including protection against dripping and light splashing of liquids.
NEMA 12 ? Enclosures constructed (without knockouts) for indoor use to provide a degree of protection to personnel against incidental contact with the enclosed equipment; to provide a degree of protection against falling dirt; against circulating dust, lint, fibers, and against dripping and light splashing of liquids.
 
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