JuiceBox and 120V operation

The JuiceBox 40 is rated to work with both single-phase (240V, 50hz EU) and two-phase (240V, 60hz US). For both of these applications, the hot/live wire is tied to L1 on our relay. The neutral/common for single-phase EU is tied to the L2 of the relay, and the ground/earth is to the same.

For single-phase, US 120V operation, the JuiceBox will not detect the lower voltage and will not work.