Types of Solar Photovoltaic Wire
Type #1: Metals
Metals that are good conductors of electricity, like copper and aluminum, are generally used for wires wherever residential and commercial solar photovoltaic installations are concerned. Relatively speaking, copper is better at conducting electricity than aluminum; however, being the costlier of the two metals, aluminum is the one widely used. Where energy efficiency is of prime importance, copper wires are installed. Aluminum wiring is mostly used for underground or overhead installation in solar photovoltaics.
Type #2: Solid or Stranded
Wires can either be solid or stranded (still being made out of metals as described above). Solid wires are simple wires comprising of long strands of solid metal. Stranded wires, however, are a twisting jumble of many thin, long strands of metal, making it look like a braiding. Stranded wires provide better flexibility than the solid wires. The risk of breakage and corrosion is also remarkably less among stranded wires. An additional benefit with stranded wires is that they carry the current over their surface, which makes them more efficient.
Installation of Solar Photovoltaic wire
There are certain color codes that are used in solar photovoltaics to determine the function of each wire in the installation. For all AC (alternating current) installations, green/bare wires represent equipment grounding, white wires represent a grounded conductor whereas black or red (or any other color) represent un-grounded hot equipment.
For all DC (direct current) installations, red wires represent positive node, white wires represent grounded conductors or negative node, and green/bare wires represent equipment grounding.
In addition to this, there are certain codes that specify the characteristics of solar photovoltaic wires:
Selecting the right PV wire for your installations can greatly improve efficiency.
About the Author:
Alpha Assembly Solutions Inc. is the global leader in the development, manufacturing and sales of innovative specialty materials used in a wide range of industry segments, including electronics assembly, power electronics, die attach, LED lighting, photovoltaics, semiconductor packaging, automotive and others. Since its founding in 1872, Alpha has been committed to developing and manufacturing the highest quality specialty materials.