Flexible Cable Used for PV Battery Interconnection

May 12, 2014
The installation requirements for solar photovoltaic (PV) systems are outlined in Art. 690 of the 2011 NEC.

For PV systems, where used for battery interconnections, flexible cables identified as hard-service use and moisture resistant in Article 400, must be a minimum size of _____ AWG.

a) 1/0
b) 2/0
c) 3/0
d) 4/0

See answer and applicable Code reference

The correct answer is: b) 2/0

The installation requirements for solar photovoltaic (PV) systems are outlined in Art. 690 of the 2011 NEC. As noted in the first sentence of Sec. 690.74, "Flexible cables, as identified in Art. 400, in sizes 2/0 AWG and larger shall be permitted within the battery enclosure from battery terminals to a nearby junction box where they shall be connected to an approved wiring method."

Voice your opinion!

To join the conversation, and become an exclusive member of EC&M, create an account today!

Sponsored Recommendations

Electrical Conduit Comparison Chart

CHAMPION FIBERGLASS electrical conduit is a lightweight, durable option that provides lasting savings when compared to other materials. Compare electrical conduit types including...

Fiberglass Electrical Conduit Chemical Resistance Chart

This information is provided solely as a guide since it is impossible to anticipate all individual site conditions. For specific applications which are not covered in this guide...

Considerations for Direct Burial Conduit

Installation type plays a key role in the type of conduit selected for electrical systems in industrial construction projects. Above ground, below ground, direct buried, encased...

How to Calculate Labor Costs

Most important to accurately estimating labor costs is knowing the approximate hours required for project completion. Learn how to calculate electrical labor cost.