SDG&E typically supplies about 120/240 volts to a house in the street- level service drop for a standard U.S. home. In practice, that means 120 volts for most everyday outlets and 240 volts for larger appliances like dryers, ovens, and some air conditioners.

Quick Scoop

The utility’s distribution system brings power down from much higher voltages before it reaches your home, and the final residential service is usually split-phase 120/240V in the U.S.. That is the normal setup for SDG&E-served homes unless the property has a special or nonstandard service arrangement.

What that means

  • 120V : most lights, TVs, phones, and standard wall outlets.
  • 240V : heavy-load appliances such as electric dryers, ranges, and some HVAC equipment.
  • The power on the street itself is usually not the voltage your house uses directly; it is stepped down by transformers before entering the home.

Bottom line

For a typical SDG&E house, think 120/240 volts , not a single street voltage.