INSTALLATION INSTRUCTIONS FOR MODEL MBC8 & MBC9 BATTERY CHARGERS (Continued) TABLE 1 - LOWER CHASSIS TERMINAL STRIP WIRING (Cont’d) TERMINAL MINIMUM WIRE SIZE (COPPER) DESIGNATION DK1, DK2 -#24 AWG Crank Disconnect Relay Input Terminals--Connect to a source of DC voltage equivalent to the Charger nominal DC voltage rating, when battery is supplying high current loads such as engine cranking or switch gear operation to prevent overloading the Charger.  Coil resistance--800 ohms on 12 volt Chargers and 3,200 ohms on 24 volt units. TABLE 2 BATTERY MINIMUM WIRE SIZES (COPPER WIRE) CHARGER WITHOUT REMOTE SENSE  WITH REMOTE SENSE Rated D.C. Max Wire Min Wire Total Loop Min Wire Total Loop Current Run Length Size                      Drop Size                                                           Drop 10 FT 16 AWG    0.2V 16 AWG 0.2V 2½ AMP 25 FT16 AWG 0.5V 16 AWG 0.5V 50 FT 14 AWG   0.6V 16 AWG 1.OV 10 FT 16 AWG   0.4V 16 AWG 0.4V 5  AMP  25 FT 14 AWG 0.6V 14 AWG 0.6V 50 FT 12 AWG   0.8V 14 AWG 1.2V 10 FT 12 AWG   0.3V 1'2 AWG 0.3V 10 AMP25 FT 12 AWG 0.8V 12 AWG 0.8V 50 FT 8 AWG 0.6V 10 AWG 1.OV 10 FT 10AWG 0.4V IOAWG 0.4V 20 AMP25 FT 8 AWG 0o6V 10 AWG 1.OV 50 FT 6 AWG 0.8V 8 AWG 1.2V Note that while the wire size shown for the AC wiring is based on wire current carrying capacity ('ampacity'), the wire sizes shown for the battery wiring are based on wiring resistance. In addition, splices or junctions in the wiring path must be low in resistance. Runs may be two of the next smaller even wire size, e.g. two #12 AWG wires may be used in place of a #10 AWG wire, etc. Aluminum wire NOT recommended. MBC8/9(1 0000)-3 2-