SparkyTim
Member
- Location
- Austin, TX, USA
Hi,
New poster here, I hope this is appropriate.
I was hoping someone would know about some of the new language in the 2017 NEC. A customer is installing a CT based submeter in an existing panel. As TX has just recently adopted the 2017 NEC, I think the inspector might be interpreting the new language too harshly.
The main question revolves around the new 312.8 (B1) wording;The meter is "listed" to 61010 as are the CTs. Which seems like it meets code. The inspector's issue is with the CTs. He's saying the new code means that the CTs have to be XOBA - UL2808 listed.
I'm not seeing XOBA or UL2808 anywhere in the 2017 NEC... I don't see anywhere there's any mention of CTs at all.
What's the proper code/specification for CTs in residential settings?
What's difference between the 2014 NEC and the 2017 NEC for sub-meter installations?
This is a picture I found that looks similar to what we're doing. (Green things are the CTs).
New poster here, I hope this is appropriate.
I was hoping someone would know about some of the new language in the 2017 NEC. A customer is installing a CT based submeter in an existing panel. As TX has just recently adopted the 2017 NEC, I think the inspector might be interpreting the new language too harshly.
The main question revolves around the new 312.8 (B1) wording;
(1) The power monitoring equipment is identified as a field-installable accessory as part of the
listed equipment, or is a listed kit evaluated for field installation in switch or overcurrent device
enclosures.
I'm not seeing XOBA or UL2808 anywhere in the 2017 NEC... I don't see anywhere there's any mention of CTs at all.
What's the proper code/specification for CTs in residential settings?
What's difference between the 2014 NEC and the 2017 NEC for sub-meter installations?
This is a picture I found that looks similar to what we're doing. (Green things are the CTs).