Thicker

The thicker the photovoltaic panel wire the better

Thicker wire results from a lower gauge number; thinner wire results from a higher gauge number. . A solar panel extension cable is a wire that connects your solar panels to other components of the system, such as the charge controller, inverter, or battery. Thick wires are indispensable to effectively transmit the generated electricity from the solar panels to the inverter and ultimately to. . Their initial 14 AWG wires caused 15% voltage drop, making their $50k solar array perform like a $42. Upgrading to 10 AWG copper wires (despite the installer's protests about cost) boosted energy production by 18% annually. If I see a smaller AWG number, is that better or worse? This is counter-intuitive: a *smaller* AWG number indicates a *thicker* wire. . Simply put, wire gauge determines how much electrical current can safely flow through the wire. Wires are cheaper than cables but their lifespan is shorter.