Charles Szpylman
New member
Where in the code does it allow a manufacturer to use smaller gage wire than allowed by the code for a particular amperage. eg. 16 or 18 gage cord on a 120v. 1500w portable electric heater.
OEM use of smaller gage wire
- Thread starter Charles Szpylman
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petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- Semi-retired engineer
Charles Szpylman said:
By OEM do you mean manufacturer?
The plain fact is that the NEC does not cover the design of such items.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
I agree with Bob, these things are not covered by the NEC. Often we will see equipment with multiple conductors under one lug or conductors much smaller than we would be required to install under the NEC.
- Location
- Massachusetts
I agree with Bob and Trevor.
But want to make note that the NEC does have requirements appliance makers must follow.
440.65 requires Window ACs to have factory installed AFCIs or LCDIs.
New Vending machines are NEC required to have GFCIs in the cord.
New fluorescents will be NEC required to have disconnects factory equipped.
Hard to say where it applies and does not apply.
Charles, along with that I suggest you look at 240.5, I think you may be surprised at what the NEC does allow.
But want to make note that the NEC does have requirements appliance makers must follow.
440.65 requires Window ACs to have factory installed AFCIs or LCDIs.
New Vending machines are NEC required to have GFCIs in the cord.
New fluorescents will be NEC required to have disconnects factory equipped.
Hard to say where it applies and does not apply.
Charles, along with that I suggest you look at 240.5, I think you may be surprised at what the NEC does allow.
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
iwire said:
Bob, all of your examples have to do with the connection of the appliance to the premises wiring system. None of your examples deal with the internal wiring of the appliance.
- Location
- Massachusetts
jim dungar said:
Not the florescent fixture disconnecting means.
I am not saying I think the NEC belongs in appliances, just that seems to be direction they are going.
Bob, I don't think that is even a remote possibilty. Most inspections are done during the construction process, can't see an inspector showing up at the door wanting to look things over after you move in.iwire said:
I know, now you are going to tell me about additions
- Location
- Illinois
- Occupation
- retired electrician
Jim,
Don
While not internal to the appliance, they are part of the appliance and connected to the appliance by the appliance manufacturer. In my opinion these code rules are outside of the scope statement for the NEC and have no business in the NEC. They belong in product standards...not in an electrical system installation code.
Don
petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- Semi-retired engineer
don_resqcapt19 said:
AMEN! These things do not belong in the NEC at all, and ought to be removed.
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
I am not defending the NEC addressing connections to appliances. I made the statement that the NEC does not cover any of the internal appliance wiring. Even the point about fluorescent fixture disconnecting means is only about removing the supply voltage. The requirement does not address any other wiring in the fixture.
The original question was if the NEC does govern a manufacturer's internal wiring. Don and Bob have moved the discussion what the NEC does cover to what it should not cover. Why don't you start another post?
The original question was if the NEC does govern a manufacturer's internal wiring. Don and Bob have moved the discussion what the NEC does cover to what it should not cover. Why don't you start another post?
- Location
- Illinois
- Occupation
- retired electrician
Jim,
Point taken...in general the NEC does not cover the internal wiring.
Don
Point taken...in general the NEC does not cover the internal wiring.
Don
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