Safety requirements for wiring systems and connectors for photovoltaic systems
Abstract
Safety requirements for wiring systems and connections and for separable connectors for use in roof mounted photovoltaic (PV) arrays were identified. The environmental use conditions applicable to PV arrays and the differences between integral, direct, standoff and rack mounted modules were considered. The articles in the national electrical code (NEC) covering wiring systems are discussed to: (1) define the wiring systems; (2) identify the permitted uses and use restrictions; (3) outline the advantages and disadvantages; and (4) address the concerns regarding support, protection against mechanical damage and wet versus dry locations. The advantages and disadvantages of each wiring system to arrive at candidate wiring systems that are best suited for use in PV arrays are assessed. For candidate wiring systems which use restrictions that may prohibit their use, considerations need to be addressed by any proposed revision to the NEC to permit acceptance by the inspection authorities. The various wiring termination methods that are permitted by the NEC are discussed and those which have features that are desirable for PV applications are identified.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- September 1984
- Bibcode:
- 1984STIN...8515110L
- Keywords:
-
- Connectors;
- Electric Wire;
- Safety Management;
- Solar Arrays;
- Solar Cells;
- Transmission Lines;
- Construction;
- Performance Tests;
- Safety;
- Supports;
- Electronics and Electrical Engineering