Magnum Energy MMS1012 Owner's Manual

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Magnum Energy MMS1012 Owner's Manual Manual pdf 25 page image

© 2010 Magnum Energy, Inc.2.0 Installation19CAUTION: The inverter is NOT reverse polarity pro-tected. If this happens, the inverter will be damaged andwill not be covered under warranty. Before connectingthe DC wires from the batteries to the inverter, verifythe correct battery voltage and polarity using a voltme-ter. If the positive terminal of the battery is connectedto the negative terminal of the inverter and vice versa,severe damage will result. If necessary, color code thecables with colored tape or heat shrink tubing; RED forpositive (+), and BLACK for negative (-) to avoid polar-ity confusion.Info: The DC overcurrent device (i.e., fuse or circuitbreaker) must be placed in the positive (RED) DC cableline between the inverter’s positive DC terminal andthe battery’s positive terminal (RED); as close to thebattery as possible.DC Ground WireRoute an appropriately sized DC grounding wire (GREEN or bare wire)from the inverter’s DC Ground Terminal (see Figure 3, Item 11) to adedicated system ground. Recommended tightening torque is 45 in.lbs.DC Negative WireRoute an appropriately sized DC negative wire (BLACK) from thenegative terminal of the first battery string to the inverter’s negativeterminal (see Figure 21 for reference).Battery Temperature SensorConnect the RJ11 connector end of the BTS to the ACCESSORY PORT(see Figure 4, Item 15) on the inverter. Connect the other end of theBTS to the negative terminal of the first battery string (in same place asthe negative DC wire above); refer to Figure 11 for the correct hardwareplacement.DC Positive WireMount the DC fuse block and disconnect (or circuit breaker assembly)as near as practical to the batteries, and then open the disconnect(or circuit breaker).WARNING: DO NOT close the DC fuse/DC disconnect (orclose the DC circuit breaker) to enable battery power tothe inverter at this time. This will occur in the FunctionalTest after the installation is complete.Route and connect an appropriately sized DC positive wire (RED) fromthe DC fuse block (or circuit breaker assembly) to the inverter’s posi-tive DC terminal.