Receptacles in Industrial Facility
Receptacles in Industrial Facility
(OP)
What kind of receptacles should be used in an industrial facility (single or duplex)? The NEC code does not say anything about it.
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Receptacles in Industrial Facility
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RE: Receptacles in Industrial Facility
We have both single (typically for 208V/220V or 20A rated 120V circuits) and regular 15A rated duplex at my facility.
RE: Receptacles in Industrial Facility
RE: Receptacles in Industrial Facility
Alan
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"It's always fun to do the impossible." - Walt Disney
RE: Receptacles in Industrial Facility
RE: Receptacles in Industrial Facility
But I have seen "heavy duty" being added to the description of standard 15A rated outlets also...
RE: Receptacles in Industrial Facility
RE: Receptacles in Industrial Facility
If we allow 180 kVA for one receptacle (360 kVA for duplex), then it looks that I can put a maximum of four duplex receptacles on a 15 A circuit.
RE: Receptacles in Industrial Facility
RE: Receptacles in Industrial Facility
All others establishments is 180 VA per receptacle
That is 8 per 15 amp circuit.
RE: Receptacles in Industrial Facility
We usually try not to exceed 6 duplex recap. per 120V circuit in case of possible future additions. Note that this only applies to general purpose receptacles where you assume 180VA per duplex recap. In other cases, the client , most of the time" could tell you what could possibly be plugged into those receptacles with more precise load information. Examples include kitchen and break rooms where they might need dedicated circuits for microwaves and such equipment where you cannot assume 180VA per receptacle. Try to find out possible loads that might be connected to those receptacles, otherwise use 180VA per duplex receptacle if they are for general purpose.
Please note that a typical duplex receptacle which I think you refer to as "one receptacle" contains two(2) NEMA 5-15R receptacles in assembly for which you should assume the 180VA, and a double duplex receptacle would be what I think you refer to as a duplex which would be 360VA/assembly.
Duplex = 180VA
Double Duplex = 2*180VA
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RE: Receptacles in Industrial Facility
RE: Receptacles in Industrial Facility
RE: Receptacles in Industrial Facility
RE: Receptacles in Industrial Facility
RE: Receptacles in Industrial Facility
OT a little, but the only other receptacles I've come across with any regularity in industrials are Appleton { www.appletonelec.com/pdf/D-32thru35.pdf } or Crouse-Hinds pin-and-sleeve, 60-ampere, 3ø 480-volt devices, interlocked with XOP disconnect switches for maintenance welders.
RE: Receptacles in Industrial Facility
The loading is 180VA, (not kVA), per general use device. Whether it is a single or duplex device, (a double duplex device is counted as two). It can be straight blade, locking type, special blade, pin and sleeve, whatever the load calls for. You can put 10 devices on a 20A, 120V, circuit, (10 x 180VA= 1800VA) < ( 20A x 120V x 80% = 1960VA). And similarly 8 devices on a 15 A circuit.
Back to the original question, I would definiately recommend a heavy duty, nylon faced, 20A receptacle for an industrial application. We expect heavy use, difficult environment and long service expectations. I would definitely recommend, by far Hubbell-Kellums wiring devices. Look at h
You can't go wrong with these. I've specified these devices, (and their predecessors), for almost thirty years. Dependable, quality devices.
Just MHO,
EEJaime
RE: Receptacles in Industrial Facility
Alan
----
"It's always fun to do the impossible." - Walt Disney
RE: Receptacles in Industrial Facility
"220-14-I: Receptacle Outlets. Except as covered in 220.14(J) and (K), receptacle outlets shall be calculated at not less than 180 volt-amperes for each single or for each multiple receptacle on one yoke. A single piece of equipment consisting of a multiple receptacle comprised of four or more receptacles shall be calculated at not less than 90 volt-amperes per receptacle."
Either a single or duplex (two outlets on one yoke) unit shall be calculated at 180VA. Four or more receptacles in one 'piece of equipment' may use the 90VA figure. So using a single or a duplex unit per location makes no difference.