u/ProBatteryLicker

I'm relatively new to power electronics so please excuse me. I'm testing out an SCR Power Controller and noticed that my voltage sags from ~115.5 VAC unloaded to ~107.5 VAC under load. If I'm understanding correctly, the voltage sag should be short duration and recover eventually. But at 100% always ON output my voltage still stays around ~107.5 VAC. I'm wondering if my circuit is setup incorrectly or if perhaps my load bank (Swift-e 10kW Portable) is causing this, anything I should be checkimg or considering?