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 2 ¹/₂ AMP 25 FT 16    AWG 0.5V 16    AWG 0.5V 50 FT 14    AWG 0.6V 16    AWG 1.0V 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 12    AWG 0.3V 10 AMP 25 FT 12    AWG 0.8V 12    AWG 0.8V 50 FT 8 AWG 0.6V 10    AWG 1.0V 10 FT 10    AWG 0.4V 10    AWG 0.4V 20 AMP 25 FT 8 AWG 0.6V 10    AWG 1.0V 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(10000)-3 -2-