Units hvac question for hvac experts

[mtnelect]

don, the details are fuzzy due to it being a few years ago and my aged brain but as I recall it wasnt a case of the unit's listing (ETL) but the fact that they were manufactured in Canada and supplied with an interconnecting cable that was acceptable in Canada but not acceptable by the NEC (don't recall if it was cord or TC). Just recall it was a mess as installers were buying a "package" that didn't meet NEC and that led to a lot of discussion as to the type of cable acceptable and the ampacity required from which we determine most were protected by internal over-current protection,.

This is the cable in Post 20

 

[augie47]

That's a cable often supplied with a mini-split and, prior tom the'17 Code, the point where we encountered a problem as TC cable could not be installed in residential other than in a raceway (336.10). Then the '17 Code introduced 336.10(9) allowing TC-ER cable with power and control to be used in residential. Note if it's being pulled thru structural member it mist also be marked "JP"