Justkeepitsimple
New Member
So I’m in the final stages of sourcing my ancillary components for an off grid system. Already have my batteries, charge controller, solar panels, and inverter (MORNING STAR Tri star 150v/60 amp ccontroller, (2) 500w solar panels, 700 watt Morningstar SureSine inverter).
It will be a twelve volt system.
I understand some DC breakers are directional (the have a current in-out flow their designed to work).
I’ve been looking for breakers specifically for a 12 volt system but don’t seem to find what I am looking for. I see 125
Volt breakers of various amperage ratings. Will these work with twelve volts? Is the voltage rating meant to mean they work from anywhere 0 to 125 volts and their rated current amperage? I really want to get the best redundant protection for our system, it may seem small but it’s an investment and I really don’t want to burn anything up or have any surprises with it unattended while we are away.
I am planning to put in a combiner box and 2 breakers for the solar panels going to the charge controller (2 breakers as the panels will be wired to charge conroller in parallel)
One breaker for the charge controller output to the batteries.
(4x) fuses one on each battery (lead acid deep cycles)
And one breaker on the input going to the inverter.
I know I am going to need to use the appropriate heavy duty cabling (1/0 gauge) going to the inverter and the batteries will all be tired together in parallel on a heavy duty bus bar.
Thanks everyone. Forum has been super helpful and archived posts going from zero Solar knowledge to designing system from the ground up.
It will be a twelve volt system.
I understand some DC breakers are directional (the have a current in-out flow their designed to work).
I’ve been looking for breakers specifically for a 12 volt system but don’t seem to find what I am looking for. I see 125
Volt breakers of various amperage ratings. Will these work with twelve volts? Is the voltage rating meant to mean they work from anywhere 0 to 125 volts and their rated current amperage? I really want to get the best redundant protection for our system, it may seem small but it’s an investment and I really don’t want to burn anything up or have any surprises with it unattended while we are away.
I am planning to put in a combiner box and 2 breakers for the solar panels going to the charge controller (2 breakers as the panels will be wired to charge conroller in parallel)
One breaker for the charge controller output to the batteries.
(4x) fuses one on each battery (lead acid deep cycles)
And one breaker on the input going to the inverter.
I know I am going to need to use the appropriate heavy duty cabling (1/0 gauge) going to the inverter and the batteries will all be tired together in parallel on a heavy duty bus bar.
Thanks everyone. Forum has been super helpful and archived posts going from zero Solar knowledge to designing system from the ground up.
