Neal30
Member
- Location
- Gainesville, ga, USA
I have a question about appropriate conductors for an Ungrounded inverter. We are looking at transitioning from PV wire on the roof, to either MC cable or NM cable. I was reading through the code and I ran upon this. If anyone has there interpretation of this, and some advice it would be greatly appreciated.
690.35 Ungrounded Photovoltaic Array
System complies with 690.35 (a) through (g)
(A) Disconnects
(B) OCP
(C)Ground-Fault Protection*
(1) Detects Ground Faults
(2) Indicates that a ground fault has occurred
(3) Automatically disconnects all conductors or causes inverter or charge controller connected to the faulted circuit to automatically cease supplying power to output circuits.
(D) The photovoltaic and source conductors shall consist of the following:
(1) Non-Metallic Jacketed multi-conductor cables? ( Does this mean that I can run NM wire or Romex from the J-box in the attic down to my inverters?) I am thinking that since the inverter is listed with Ground Fault Protection*, this is what is allowing me the option of running conductors not in a raceway, or in a metal jacket.
(2) Conductors installed in raceways, or
(3) Conductors listed and identified as Photovoltaic (PV) Wire installed as exposed, single conductors.
So what are your thoughts, from a Safety and durability standpoint for this type of conductor?
Thanks
690.35 Ungrounded Photovoltaic Array
System complies with 690.35 (a) through (g)
(A) Disconnects
(B) OCP
(C)Ground-Fault Protection*
(1) Detects Ground Faults
(2) Indicates that a ground fault has occurred
(3) Automatically disconnects all conductors or causes inverter or charge controller connected to the faulted circuit to automatically cease supplying power to output circuits.
(D) The photovoltaic and source conductors shall consist of the following:
(1) Non-Metallic Jacketed multi-conductor cables? ( Does this mean that I can run NM wire or Romex from the J-box in the attic down to my inverters?) I am thinking that since the inverter is listed with Ground Fault Protection*, this is what is allowing me the option of running conductors not in a raceway, or in a metal jacket.
(2) Conductors installed in raceways, or
(3) Conductors listed and identified as Photovoltaic (PV) Wire installed as exposed, single conductors.
So what are your thoughts, from a Safety and durability standpoint for this type of conductor?
Thanks