ARCO Marine Catalog

© ARCO STARTING & CHARGING SPECIALISTS 63 WIRING AND VOLTAGE VOLTAGE IS MUCH LIKE WATER PRESSURE. When calculating proper wire sizing, voltage plays a very important role. Voltage is much like water pressure. The higher the voltage, the faster the current flows. A 24 volt system can move the same amount of current through a wire one half the size required for a 12 volt system. This is also shown in the charging cable size chart on the following page. Notice that the 24 volt cable size requirements are much less than that of the 12 volt. — Source of Flow Alternator and Battery 24 volt 1/2 inch diameter hose Load requires 1 gallon per minute of flow. 1/2 inch diameter hose allows 1 gallon per minute of flow at 24 volts. — Source of Flow Alternator and Battery 12 volt Load requires 1 gallon per minute of flow. 1 inch diameter hose allows 1 gallon per minute of flow at 12 volts. 1 inch diameter hose The higher the voltage, the faster the current flows. TECH TIPS