Disconnecting means
- Thread starter patpappas
- Start date
- Status
- Location
- Logan, Utah
The primary overcurrent device for a transformer is not require to be within sight of the transformer.
Chris
Chris
patpappas
Member
Does the NEC say that anywhere?
more importantly, with the NEC being a "permissive" Code, it does not say the disconnect has to be at the transformer.
- Location
- Logan, Utah
I agree with Gus.
The proper question should be where in the NEC does it say that a transformer requires a disconnecting means within sight from the transformer.
Chris
The proper question should be where in the NEC does it say that a transformer requires a disconnecting means within sight from the transformer.
Chris
- Location
- Lockport, IL
- Occupation
- Retired Electrical Engineer
When I see the phrase, "disconnecting means," I envision a device capable of turning something off, without necessarily providing overcurrent protection. More to the point, and as an example, even if a motor and its branch circuit conductors are protected against overcurrent, we still need to put a disconnect within sight of the motor. I don't think a transformer is required to have such a thing. It must be protected against overcurrent. But the device that accomplishes that mission need not be within sight.
- Location
- Logan, Utah
As I said earlier, there is no requirement for a disconnecting means for a transformer. There is a requirement for primary overcurrent protection (See 450.3) but the OCPD does not need to be "in sight of" the transformer.
Chris
- Location
- Logan, Utah
- Status