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Summary of Contents for MidNite Solar Brat
- Page 2 MNBRATKIT MidNite Brat Solar Charging Kit 1 pc MNBRAT 20/30-amp PWM Charge Controller 1 pc MNBIGBABY Breaker Box 3 pcs 1-10A MNEPV- PV, Battery and Load Breakers 1-20A 1-30A 2 pcs 9-161-1 Strain Relief 2- 4 Hole Strain Reliefs with Lock Nuts...
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Page 3: Tools And Supplies
Solar modules- what to buy The Brat is a PWM charge controller. This type of controller will allow the output voltage of the solar module to be pulled down close to the battery voltage. Because of this, it's best to avoid choosing a solar module that has a maximum power voltage (Vmp) significantly higher than your nominal battery voltage. -
Page 4: Planning Ahead
NOTE: The Brat can only accept a maximum #10 wire. If your wire run requires wire larger than #10, the best place to transition down to #10 is inside the Big Baby Box. The circuit breakers can accept up to a #6 wire. There are several handy online wire sizing calculators available. - Page 5 MNBRATKIT MidNite Brat Solar Charging Kit (HINT) When removing the knockouts, make sure to only remove the minimum amount needed for the threaded portion of the strain relief. Gently tap on the screw driver or punch with a hammer until the circle plug starts to bend inward. Move to the opposite side of the circle and do the same.
- Page 6 Conduit Adapter The conduit will connect your BIGBABY and BRAT as well as protect your wires. It slides over the adapter. Big Baby Wiring Run the wires that come from your solar module through the bottom of the Big Baby. There are holes in the strain relief for passing the wires through and into the box.
- Page 7 MNBRATKIT MidNite Brat Solar Charging Kit NOTE: Before installing the circuit breakers, disengage (pull straight down) the yellow din rail tabs on the back of the breakers using your fingernail or a small, straight-slot screwdriver. Hook the breaker onto the top of the din rail then push the breaker all the way in.
- Page 8 The negative wire connects to the negative bus bar. Estimate the length of wire needed to go from the Big Baby to the Brat terminal block. Cut and install two #10 negative wires of appropriate length to the negative bus bar, then two #10 positive wires to the top of the two breakers (the - - end).
- Page 9 MNBRATKIT MidNite Brat Solar Charging Kit (In this image it shows all Negative wires from the PV, Battery, Load and BRAT are on the Negative Busbar. The Positive wires from the BRAT and Load are in their respective breakers) NOTICE that the load wire is routed differently, this is so the breaker polarity is correct and the breaker is right side up. We used a blue wire for the Load positive to make it easier to identify) Important: The circuit breaker torque value is 20 inch-pounds (2.3NM).
- Page 10 MNBRATKIT MidNite Brat Solar Charging Kit Preparing the BRAT The BRAT out of the box has Strain Relief on both of the openings. In this application we will be replacing one with a Conduit Adapter and one with a hole plug Due to ease of wiring we recommend using the plug on the left-hand side.
- Page 11 MNBRATKIT MidNite Brat Solar Charging Kit NOTE: There is a ground lug in the Big Baby that will need to be connected to earth ground. Please see the wiring diagram. The Cover of the BIGBABY has knockouts that you will need to remove. Two pieces per breaker.
- Page 12 MNBRATKIT MidNite Brat Solar Charging Kit 12 | P a g e 1 0 - 4 0 5 - 1 R E V A...
- Page 13 Brat. Once you are sure that your wiring is completed, your polarity is correct and the Brat settings are completed and accurate, you are ready to power everything up: 1. Make sure the breakers in the Big Baby are off 2.
- Page 14 MNBRATKIT MidNite Brat Solar Charging Kit Optional load at battery voltage. 10 Amp Max. For warranty information please refer to the manuals that came with your equipment. Save all the manuals that came with your equipment and keep them in a system folder. They tend to...
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