![]() ![]() Relays allow you to use the proper size fusefor each device, and to place the fuses closer to the battery.If you’re into clean-looking systems, you can use one switch and several relays instead of a bank of bulky switches. Having only one switch to turn off is safer in an emergency, and more convenient as well. Using relays allows you to control a number of devices with a single switch (a master ignition switch on a race car, for example).Combined with the proper gauge wire, this will minimize the voltage drop between the battery and the device, allowing it to function at peak performance levels. ![]() shortest wire length) between the batteryand the device(s) controlled by the relay. A correctly wired relay will provide the shortest electrical path (i.e.Why not just use an ordinary on/off switch, you ask? Here are some reasons why relays are better than switches: You can read our earlier post on How Relays Workfor a more detail description of how relays operate. An electro-magnet (also called a coil) is used to pull a set of contacts, or pins, together. One easy way to increase system reliability and performance is by using relaysto switch devices (lights, fuel pumps, fans, etc.) on and off. ![]() An electrical systemis only as reliable as its components.
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