What does the '1-Pole' designation mean for my wiring

The Packard PM12440 is a heavy-duty 120V to 24V step-down transformer engineered for reliable performance in residential and commercial HVAC control circuits

Built to precise Source1 factory specifications

water heater maintenance

Nordyne 626497R Limit Switch What does the '1-Pole' designationThe Nordyne 626497R Limit Switch is a critical OEM safety component engineered for precise thermal regulation in Nordyne, Miller, and Intertherm heating systems. This L115 20 automatic reset limit switch serves as a primary rollout safety, monitoring the burner assembly for abnormal heat dissipation. When temperatures exceed the 115F threshold, the switch opens the circuit, interrupting the gas valve power or control signal to prevent equipment