Forum Discussion

profdant139's avatar
profdant139
Explorer II
Oct 11, 2021

Need advice on 50 ft cable to portable solar panel

We have a 120 watt portable solar panel -- it almost always generates enough power to top off our battery every day. We usually park the trailer in the shade and put the panel in the sun. We have ...
Boon_Docker's avatar
Boon_Docker
Explorer III
Oct 11, 2021
Worse case scenario based on the specs below.

100 watt panel
Output 18 volts, 5 amps
Distance 100 feet (12AWG)
11% voltage drop

10AWG would be about a 6% drop

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,354 PostsLatest Activity: Jan 24, 2026