The connection mode of silicon carbon rod element can be serial or parallel, and it is better to use in parallel. When used in series, the number of branches in series should not be more than 3. The determination of resistance depends on its own needs.

The best power supply equipment for silicon carbon rod is the equipment with large voltage regulating range and stable and continuous voltage regulating, such as magnetic voltage regulator, SCR AC/DC voltage regulator and so on. If a step-regulating transformer is selected, it should also be selected with a small voltage level difference and a large number of voltage regulating transformers.