We will learn more about it in a later lesson. While you would not normally wire two lights in series like this, you would wire these lights in parallel, you do wire analog devices like this. The switches are connected between lamps and phase wire. ![]() All these three Lamps are connected in parallel to each other. If there is more than one black wire connected to the switch, follow the instructions in step three. Here the diagram shows how we can control three Lamps separately. If there is only one black wire connected to the switch, follow the instructions in step two. Check all wires for current with your voltage tester. Given that the resistance is the same for each light, the voltage will be divided evenly between the two lights providing 12VDC to each light. If there is already a switch with one light installed, return to the switch and remove the cover. While not normally shown, each of those lights is a resistor which when voltage is applied consumes power which is released in the form of light. We have two lights in series powered by 24VDC. ![]() While we will not consider these losses, "real loads" in series do consume power and the voltage is divided across them according to their resistance.įor a simple example which we will use for an exercise later, see image below. In cases of devices that we don't think of as consuming power such as switches, wire, etc the power is is in the form of heat loss. And as we learned in Understanding voltage (AC and DC), current, resistance, and power, if there is voltage and resistance, then there is power being consumed. Voltage divider - There are many important principles that you will learn in an electricity class but the one that you absolutely must understand for series wiring in industrial environments is voltage dividers.Įvery device that current flow through, even wire, has resistance.
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