ElecEngr101
Member
- Location
- North Dakota, USA
I have a 5000W electric heater at 240VAC being fed with a double pole 30A breaker and #10 copper wire. The wiring diagram inside the unit lists some data about the heater:
Heater Amps: 20.9
Min. Circuit Ampacity: 26.1
Max. Fuse Size: 30
Min. Wire Size 75°C Copper: #10
It has a built-in thermostat mounted on the unit, which makes it difficult to access since it is mounted approximately 8' off the floor. I am planning to install a remote thermostat and I have a wiring question that I can't seem to find the answer to. The internal wiring connecting the built-in thermostat to one of the 120V lines coming in is 14AWG stranded copper. How is this not a code violation and can anyone reference the section of the code that states this is acceptable. Table 310.16 of the NEC states that the maximum ampacity of a 14 AWG conductor is 20A, therefore I don't see how this is allowable. I've attached a picture of the wiring schematic and the printing on the internal cable jacket for a reference. Any help on this would be greatly appreciated.
Heater Amps: 20.9
Min. Circuit Ampacity: 26.1
Max. Fuse Size: 30
Min. Wire Size 75°C Copper: #10
It has a built-in thermostat mounted on the unit, which makes it difficult to access since it is mounted approximately 8' off the floor. I am planning to install a remote thermostat and I have a wiring question that I can't seem to find the answer to. The internal wiring connecting the built-in thermostat to one of the 120V lines coming in is 14AWG stranded copper. How is this not a code violation and can anyone reference the section of the code that states this is acceptable. Table 310.16 of the NEC states that the maximum ampacity of a 14 AWG conductor is 20A, therefore I don't see how this is allowable. I've attached a picture of the wiring schematic and the printing on the internal cable jacket for a reference. Any help on this would be greatly appreciated.