How do I electrically connect the power extension of the eTherm P with the eTherm C ?

Category: Solar energy

For the electrical connection, two additional installation contactors are set as additional auxiliary relays. Usually, a 1-phase and a 3-phase installation contactor must be installed here. The first phase of the cartridge heater is thus connected to the 1-phase contactor, the two remaining phases of the cartridge heater are connected to the 3-phase contactor. It is important to correctly assign the phases to the controller! The single-phase contactor must be connected to the controller as consumer 1 and the second contactor with 2 phases as consumer 2. Now 12,000 watts of continuously modulating power are available.