Elements of a Small Off-Grid 24 Volt Solar System

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Elements of a Small Off-Grid 24 Volt Solar
System (Installed by Mack Grady at Gary Gradys
cabin, 15 miles north of Silverthorne, CO, in the
Gore Range. 9200 elevation)
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Cabin originally had only a 120Vac generator to
power house wiring and water pump about 1 hour
each day. There was no battery system.
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Essential Load!
Watch out for shadows
150W Pair on a good day, 1kWH
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Straddles the Roof for Best Azimuth Angle
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Box for DC connections and breakers
PV battery charge controller
AC box and breakers for inverter output feed a
separate set of inverter-powered outlets in the
cabin
1100W Inverter
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DC breaker from panels to controller
DC breaker from battery charger to batteries
Battery charger from portable generator
PV battery charge controller
DC breaker from batteries to inverter
DC lightning arrestor
DC breaker from controller to batteries
1100W Inverter
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Inverter on/off switch goes to kitchen
Cables to battery breaker
Inverter output to AC breakers
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Four 6 Volt, L6 Batteries in Series (24 Volt
System) in a Homemade Vented Box
Battery temperature sensor goes to PV charge
controller
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