amapacity of thermostat wire

Status
Not open for further replies.
realolman said:
Is there a problem with my wanting to know?
Click to expand...

Nope, but most class 2 circuits are current limited so the ampacity of the cable is not an issue.
 
infinity said:
Nope, but most class 2 circuits are current limited so the ampacity of the cable is not an issue.
Click to expand...

Right...., so the ampacity of 18. ga thermostat wire would be at least 5 a.?

and it doesn't matter if there are more than 3 current carrying conductors or not?
 
nakulak said:
although it doesn't apply (?), 725.23 has a clue.
Click to expand...
Why wouldn't it apply?

725.3 Other Articles.
Circuits and equipment shall comply with the articles or sections listed in 725.3(A) through (G). Only those sections of Article 300 referenced in this article shall apply to Class 1, Class 2, and Class 3 circuits.
(A) Number and Size of Conductors in Raceway. Section 300.17.
Click to expand...
300.17 Number and Size of Conductors in Raceway.
The number and size of conductors in any raceway shall not be more than will permit dissipation of the heat and ready installation or withdrawal of the conductors without damage to the conductors or to their insulation.
Click to expand...
 
realolman said:
How can I find out or determine the ampacity of 18/3 and 18/5 thermostat wire?
Click to expand...

even after you twist several of them together, I still don't think you're going to be able to run that receptacle off it.




:D
 
UL 508A has 16 gage at 10 amps and 18 gage at 7 amps.
There is a new article in the 2008 NEC on Amusement Park Rides it has ampacity of small conductors.
But T-stat cable does not have a voltage rating.
 
tom baker said:
But T-stat cable does not have a voltage rating.
Click to expand...
Sure it does: 300v.

From the Home Depot Worksite CD:

Thermostat and Bell Wire
"18-Gauge Thermostat Cable, Pacific Electricord"
"Rated to 105 degree Celsius. 300 Volts. CL-2. UL Listed."
 
Status
Not open for further replies.
Top