The electrical system is actually two systems: a 120 volt system and a 12 volt system. The 120 volt system works exactly like the 120 volt system in a home. It has a 60 amp box holding one to four 15 amp breakers. These must be turned on for the system to operate. The 30 amp cord must also be plugged into a 120 volt power source. Most campgrounds have both 30 and 15 amp power sources. If there is only a 15 amp power supply use the 30 to 15 amp adaptor supplied with the trailer to connect to 120 volt power. Twelve volt power is supplied by the tow vehicle battery, a battery pack, or the converter. The dome lights and the bullet lights all operate on 12 volt. The 18 inch florescent under-cabinet light is the only 120 volt standard light in the trailer.
Twenty amp converter: The converter converts 120 volt power to 12 volt recharging the battery while converting. This allows the user fully use the 12 volt system without fear of running out of battery power. The trailer must have access to 120 volt power to implement this option. This option is fully automatic when installed. There are nine circuits, all of which are fused, the three to the right are being filtered for use with TV, radio, stereo, etc., The other appliances refrigerator, furnace, demand pump are all run off separate circuits as shown on electrical diagram.
Battery Pack: 12 volt power is essential for several of the optional appliances and lights. Once the battery pack is installed it is fully automatic and has no on/off switches. Type of battery used is a marine starting battery with wing not attachments for easy removal when needed.
To understand the circuitry, study the schematic diagram. Notice that 120 volt circuits are dotted lines and 12 volt lines are shown solid. Any trailer without all appliances will have some of the associated wiring deleted from that trailer.