Main Diagram
LITHIONICS BATTERY, CLEARWATER, FL 33765 USA | PH: 727.726.4204 | FAX: 727.797.8046 | WEB: LITHIONICSBATTERY.com
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The main diagram depicts the overall layout of the system. The 4/0 positive cable is connected to the MRBF fuse block via a
300A post mounted fuse and an isolation switch.
The inverter is connected to the non-fused post of the fuse block via a Class T 250A fuse and an isolation switch. The Class T
fuse block should be mounted as close as possible to the MRBF fuse block. The isolation switch gives you the ability to
isolate the inverter in the case of a malfunction, as well as disabling the inverter if work is required on the AC system.
If the inverter is installed more than five feet from the fuse block, the wire size should be increased to 4/0 to compensate for
voltage drop. The chassis DC grounding conductor (green) should be sized not less than one size smaller than the DC
positive conductor and have a capacity such that the DC positive fuse has an amperage rating not greater than 135% of the
current rating of this ground wire.
If the 2/0 positive cable supplying the inverter shorts to ground internally, then the chassis ground cable needs to be able to
carry enough current to blow the fuse without melting and possibly causing a fire.
