Porch Enclosure

The answer is…(surprisingly) yes. There exists a bit of latitude within the NEMA standard for a rated ventilated enclosure.

(This is not a case where somebody indiscriminately punches holes into a NEMA 12 rated cabinet to provide it with ventilation. This a NEMA 12 rated enclosure having a rated compartment for ventilation)

NEMA Standard ICS-6 1993 (R2001, R2006) states the following:

"7.2.4.1.1 Type 5 and Type 12 Ventilated Enclosures

Enclosure Types 5 and 12 may include sections or compartments that are ventilated. These sections or compartments need not meet the dust test requirements but should meet the test requirements for Type 1 and Type 2 enclosures. In such a case either a separate designation for each type compartment should be placed on each compartment or a single nameplate may state: Type 12 with Type 1 compartment."

Had a Square D Nema 3 enclosure given to us, it has the meter socket attached. 200amp 120/240v. But it does not have a main breaker or feed thru lugs. I’m trying to add a 200 amp double pole breaker to feed the mobile home.
I know they have the 200amp square d double pole breakers but there’s 4 locations to attach to bussing and to terminate wires.
Is there a kit to add lugs rather than install a breaker outside? Or is there breaker 200 amp that has capacity for 4/0 aluminum?
Yeah I’ve been looking at that website, and the closest looking I’ve found is the RC12L200C but yet it’s specs aren’t the same as what this loadcenter is.
It’s a Square D, NEMA 3R, 120/240v, 200amp, 12 space panel with meter socket atop already attached from factory, bought from home depot, aluminum bussing, homeline type.
We’ve used 4/0 aluminum wire to meter and into mobile home. What other variables?
hey lic. electrician…I’ve seen the breaker you’re speaking of, it does look like 4 poles and it has an actual 4 terminals, is there an adapter to this to make it work as there is no 4 phase, this is single phase 120/240, and I don’t see how 4 terminals would work unless it was like a parallel setup. Thanks ahead.

There are too many variables to consider when asking this type question.

I’ve added this link as to help:

http://ecatalog.squared.com/

Hope it helps.

it says i have to drill a 1/4 inch hole in this enclosure in order for it to meet the requirements of nema 3 r. should i drill a hole in it? it is regularly exposed to washdown environments.

http://www.nema.org/prod/be/enclosures/upload/NEMA_Enclosure_Types.pdf

I know that NEMA standards are not, since they neither test nor certify any products, and I’m assuming that the IEC’s IP Standards are the same way, but I just want to be sure.

Standards are simply agreements on common terms.

The question of whether adherence to a standard is mandatory depends on the legal jurisdiction in which the installation takes place. It is possible that the "Authority Having Jurisdiction" (that’s the generic term for the electrical inspection agency that determines what is acceptable in your area) may require compliance with certain standards.

It’s an italian motor, so it’s hard starting. Any recommendations on breaker/enclosure combo? Nema 3r prefered.

from 2008 NEC

430.52 time delay fuse of not more than 175% fla or inverse time breaker of not more than 250% of fla.

any of the major manufacturers can help you out with the enclosure.

hi
i m working on my corn mill and my corn mill need new electric or diesel motor with 15 hp. i need to calculate the heat output of a 15 HP motor and then use that data to determine the heat radiated at(btw grinding unit and motor at different distances);
1 inch away
2 inches away
3 inches away
…uptil 6 inches away.
the motor info is :
Baldor JPM2333T 15HP 1755RPM 3 PHASE 60HZ 254JP 0748M TEFC F MOTOR

Catalog Number: JPM2333T
Specification Number: 07H301X798
Horsepower: 15
Voltage: 208-230/460
Hertz: 60
Phase: 3
Full Load Amps: 41-37.8/18.9
Usable at 208 Volts: N/A
RPM: 1755
Frame Size: 254JP
Service Factor: 1.15
Rating: 40C AMB-CONT
Locked Rotor Code: J
NEMA Design Code: A
Insulation Class: F
Full Load Efficiency: 89.5
Power Factor: 82
Enclosure: TEFC
Baldor Type: 0748M
DE Bearing: 6309
ODE Bearing: 6307
Electrical Specification Number: 07WGX798
Mechanical Specification Number: 07H301
Base: RG
Mounting: F1
i need help like how to calculate and which eqn i have to use it.
really need help please please.
thanks

The rated mechanical output of the motor is 15 Hp or 15 X 746 = 11190 watts.
The nameplate efficiency is 89.5% or 0.895.
Using losses = output power X (1-efficiency) / efficiency), the losses are 11190 X (1-.895) / 0.895 = 1313 watts.

The motor’s nameplate rated ambient temperature is 40C. The performance information on the Baldor web site indicates that the typical temperature rise of the windings at full load is 80C. The motor’s surface temperature would be considerably less that the winding temperature, but assume that the surface temperature is 120C or 393K.

The radiated heat in watts can be calculated using q(W) = rT^4Ae, where r is the Steffan-Boltzman constant = 5.67E-8, T is the Kelvin temperature, A is the surface area in m^2 and e is the emissivity. The surface area can be estimated at 0.6 m^2 from the drawing provided on the Baldor web site. The emissivity of gray painted steel can be estimated to be 0.9. The maximum radiated heat can then be calculated to be 730 watts. The remaining 583 watts can be presumed to be transferred to the air by direct conduction. The radiated energy would also be absorbed by the air if not transferred to a fairly close object.

Obviously the heat dissipated by a diesel engine would be considerably more since the efficiency is only about 30%. However, quite a bit of the heat could be carried out of the area by piping the cooling water to a remote radiator.

Revision:
A small diesel engine is going to be a lot less efficient than 30%. I think 15% may be more likely.

I get them at my local electrical supply store. They usually sell to contractors, and hardware stores, so you could get one by asking your locale hardware store to get one for you, or the outlet may sell one to you. Look in the yellow pages under electric equipment & supplies. Give them a call and ask them if you can buy one from them, or what local store would have them.

Designed to accommodate a large variety of commercial plasma displays ranging from 24″ (61cm) to 70″ (178cm) and housing additional VESA mounts for thin client or dedicated PCs as standard an Armagard plasma enclosure is the ideal all in one digital signage protection solution.

Armagard plasma enclosures are constructed according to European IP and International NEMA standards, ensuring protection from water and dust. Built from mild or stainless steel with a shatterproof screen Armagard plasma enclosures are shipped complete with wall mounting brackets but may also be ceiling or pedestal mounted.

Duration : 0:1:29

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Designed to accommodate a large variety of commercial LCD displays ranging from 24″ (61cm) to 70″ (178cm) and housing additional VESA mounts for thin client or dedicated PCs as standard an Armagard LCD enclosure is the ideal all in one digital signage protection solution.

Armagard LCD enclosures are constructed according to European IP and International NEMA standards, ensuring protection from water and dust. Built from mild or stainless steel with a shatterproof screen Armagard LCD enclosures are shipped complete with wall mounting brackets but may also be ceiling or pedestal mounted.

Duration : 0:1:12

(more…)

Designed to accommodate a large variety of commercial plasma displays ranging from 24″ (61cm) to 70″ (178cm) and housing additional VESA mounts for thin client or dedicated PCs as standard an Armagard plasma enclosure is the ideal all in one digital signage protection solution.
Armagard plasma enclosures are constructed according to European IP and International NEMA standards, ensuring protection from water and dust. Built from mild or stainless steel with a shatterproof screen Armagard plasma enclosures are shipped complete with wall mounting brackets but may also be ceiling or pedestal mounted.

Duration : 0:1:14

(more…)