Description

Need to locate your PowerFilm solar panels a little further from your battery pack? This is the cable for you. This is a 15′ (4.5m) extension cable with the PowerFilm connectors on each end for simple installation.
PowerFilm extension cable. (RA-7)

RA-7 Powerfilm Extension Cable Specifications

Wire Gauge : 18AWG outdoor rated
Connector Type : Delphi
Ampacity : 12A
Voltage Drop (2A/30W @ 15.6V over the 15′ distance) : 3.1%

Need more current over a longer distance?
Consider adapting the Delphi to an Anderson PowerPole 30 or 45 or SB connector with heavier gauge wire. For example, #10AWG PV wire can carry this same 2A @ 15.6V 50′ with only 1.6% voltage drop, or 4A with only 3.2% drop.

What is voltage drop?

It is an indication of the loss of energy in the wire due to resistance inherent in the copper (or aluminum). Voltage drop means energy loss, so we want to keep it to a minimum without adding too much cost by buying big cable, or having problems making connections with big cables.
3% drop is a typical target limit for off-grid systems.
5% drop it a typical target limit for unattended automated systems (lighting, sensors, etc)