Where Does The Feed Come From
The electrical wiring to feed the disconnect is fed from the load side of the electric meter. There are two hot wires that both carry 120 volts and are different phases. These phases are normally called "A" and "B" phases. The total voltage when measured between them is around 240 volts. These wires connect to the disconnect breaker installed within the disconnect box. In this example, the breaker is a 100-amp Square D two-pole breaker.
Feeding the Line Side of the Breaker
The wires connect to the top two lugs of the breaker called the "line" side of the breaker. The neutral wire connects to the silver-colored lug along the side of the breaker. Mark this wire with white phasing tape to signify that it is the neutral wire.
Feeding the Load Side of the Breaker
The bottom of the breaker is for the "load" side wiring. The wires that connect here feed the electric panel in your home. Connect the two "hot" wires to the bottom of the breaker. The neutral wire connects to the silver-colored lug along the side of the breaker. Mark this wire with white phasing tape to signify that it is the neutral wire.
What Do the Electrical Disconnect Wires Feed?
The electrical disconnect feeds the breaker panel in your home. The feeder wires connect to the main breaker in the panel and the neutral wire connects to the neutral buss. Do you want to learn more about How an Electrical System Works?
Things You'll Need
To cut the wire.
To cut off the insulation from the wire.
To tighten the terminal lugs.
White Phasing Tape
To mark the neutral wire.
To check if the power is off, for safety.
- Safety First!
Before performing any electrical installation, make sure that the power is turned off. Test the connections to be safe!
- Bend the wires in the general shape they need to be in to line up with the terminal lugs they will secure to.
- Only strip enough insulation from the wire to make the connection to the lugs. Too much bare wire is a safety hazard.
- Mark the neutral wire before cutting the excess from it.
- Try not to nick the bare copper wire while cutting off the insulation.