Why are short, heavy-gauge wires used for a transceiver’s DC power connection?

When an amateur radio transceiver is actively transmitting, it can draw a significant amount of electrical current—often 20 amps or more for a standard 100-watt radio. According to Ohm's Law, as current increases, the voltage drop across a wire will also increase if the wire has measurable electrical resistance. Using short, heavy-gauge (thick) wire keeps the electrical resistance as low as possible. This minimizes voltage drop, ensuring the radio receives the full voltage it needs to operate correctly and preventing the radio from shutting off or distorting your signal during peak current demands.