In the service box, the ungrounded service entrance wires should be connected(Category: Electrical) •   to power the fuses first, then the switch. •   one to the switch, and the other to the grounding terminal. •   to the “load” side of the main switch. •   one to the switch, and the other to the neutral. •  to the “line” side of the main switch.

Answer

To the “line” side of the main switch. This is the side that receives power directly from the utility company. The "load" side of the switch then distributes power to the rest of the electrical system within the building.

Category
Electrical
Question Type
Memorize

✅ Line terminals are the terminals on a switch or breaker where the incoming power supply connects.

  • Think of “line” = power coming in from the utility or upstream source.
  • Line terminals receive the live, energized conductors (ungrounded conductors, i.e., “hot” wires) that bring electricity to the device.
  • In a service panel, the line terminals of the main breaker connect directly to the ungrounded service entrance wires coming from the utility meter.

In contrast:

✅ Load terminals are where the power leaves the device to feed downstream circuits.

  • Think “load” = power going out to the devices or branch circuits.
  • After the breaker closes, electricity flows through to the load terminals to supply the house circuits.

Example (simplified):

Terminal
Purpose
Connected to
Line
Power source
Utility service entrance wires
Load
Downstream load
House branch circuits