IQ Load Controller Additional Info

Load and Solar Circuit Control using IQ System Controller Auxiliary Contacts

Example Wiring: Heavy 240V Load Shedding for 1X Circuit

Figure 25: Example Wiring: Heavy 240V Load Shedding for 1X Circuit

Using an external contactor with a 120Vac coil

24 Vac coil based definite purpose contactors for large loads typically have holding currents that exceed

IQ System Controller auxiliary contact rating of 1 A. In such cases an external contactor with a 120 Vac

coil can be used with the bill of materials and wiring specified in this section. A 12 V DC power source is

used to drive an interposing power relay and the auxiliary contacts in IQ System Controller controls the

current to the coil of the power relay. The output of the power relay is used to control the 120 Vac coil of

the external contactor.