A wiring diagram is a simplified conventional pictorial representation of an electrical circuit. It shows the components of the circuit as simplified shapes, and the power and signal connections between the devices.
A wiring diagram usually gives information about the relative position and arrangement of devices and terminals on the devices, to help in building or servicing the device. This is unlike a schematic diagram, where the arrangement of the components' interconnections on the diagram usually does not correspond to the components' physical locations in the finished device. A pictorial diagram would show more detail of the physical appearance, whereas a wiring diagram uses a more symbolic notation to emphasize interconnections over physical appearance.
A wiring diagram is often used to troubleshoot problems and to make sure that all the connections have been made and that everything is present.
Architectural wiring diagrams show the approximate locations and interconnections of receptacles, lighting, and permanent electrical services in a building. Interconnecting wire routes may be shown approximately, where particular receptacles or fixtures must be on a common circuit.
Wiring diagrams use standard symbols for wiring devices, usually different from those used on schematic diagrams. The electrical symbols not only show where something is to be installed, but also what type of device is being installed. For example, a surface ceiling light is shown by one symbol, a recessed ceiling light has a different symbol, and a surface fluorescent light has another symbol. Each type of switch has a different symbol and so do the various outlets. There are symbols that show the location of smoke detectors, the doorbell chime, and thermostat. On large projects symbols may be numbered to show, for example, the panel board and circuit to which the device connects, and also to identify which of several types of fixture are to be installed at that location.
A set of wiring diagrams may be required by the electrical inspection authority to approve connection of the residence to the public electrical supply system.
Wiring diagrams will also include panel schedules for circuit breaker panelboards, and riser diagrams for special services such as fire alarm or closed circuit television or other special services.
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If you look at the RV's power distribution panel you will see circuit breakers like you have in your house for the 120 volt AC side, and automotive style blade fuses for the 12 volt DC side. If you are not plugged into an external power source you can still use the 12 volt DC system if you have a 12 volt deep cycle marine battery on your unit.
The Resistors and Circuit Board of an RV Power Converter; In some of the RV power converters, a resistor controls the voltage to the batteries and the 12 volt DC system. Some models have it riveted to the converter box, and its reading should be in the range of 3 13 volts. This will be determined by the charge present in your battery.
Any electrical fault can be isolated to a circuit in a matter of minutes by using this 12V wire standard, a VOM meter (multi meter) and starting at the source: * Every 12V DC circuit is color coded and numbered (if applicable) for easy identification * All Distribution Center (DC) panel labeling (wiring) has been standardized
