Elements of a Small Off-Grid 24 Volt Solar

Elements of a Small Off-Grid 24 Volt Solar System (Installed by Mack Grady at Gary Grady’s cabin, 15 miles north of Silverthorne, CO, in the Gore Range. 9200’ elevation)

Cabin originally had only a 120 Vac generator to power house wiring and water pump about 1 hour each day. There was no battery system.

Essential Load! Watch out for shadows 150 W Pair on a good day, 1 k. WH

Use outdoor-rated UV wiring Straddles the Roof for Best Azimuth Angle Separate grounding cable for lightning protection goes straight down to single-point ground rod

AC box and breakers for inverter output feed a separate set of inverterpowered outlets in the cabin Ground wire connects all metal boxes to the single -point ground rod 1100 W Inverter Battery charger from portable generator Box for DC connections and breakers PV battery charge controller DC lightning arrestor

DC breaker from panels to controller Battery charger from portable generator DC breaker from battery charger to batteries DC breaker from batteries to inverter PV battery charge controller DC lightning arrestor DC breaker from controller to batteries 1100 W Inverter

Inverter on/off switch goes to kitchen Cables to battery breaker Inverter output to AC breakers

Four 6 Volt, L 6 Batteries in Series (24 Volt System) in a Homemade Vented Box Battery temperature sensor goes to PV charge controller