Path-Q Solar

Can I back up only selected circuits instead of the entire house?

Answer

Yes. A critical-load design can place selected circuits behind the backup equipment while leaving larger or nonessential loads on the grid-only side. This often reduces battery and inverter size, but the circuits must be identified and separated correctly by a qualified installer.

Key points

  • Typical critical loads may include refrigeration, lighting, communications, security, medical equipment, or selected outlets.
  • Large loads such as electric heating, water heating, cooking, pumps, and vehicle charging may need exclusion or management.
  • The battery must still meet the selected circuits' continuous and startup demand.
  • The design should explain how circuits are transferred and what happens during restoration.

What it depends on

  • Electrical panel configuration
  • Critical-load power and energy use
  • Battery and inverter ratings
  • Required rewiring, transfer equipment, and code compliance

Risks and trade-offs

  • A circuit thought to be nonessential may share wiring with an important appliance.
  • A smaller system costs less but provides less convenience and may require manual load prioritization.

Information you may need

  • Panel schedule and circuit list
  • Critical appliance loads
  • Battery and inverter output
  • Proposed critical-load panel or transfer design

Your next step

What to do next

Ask for a circuit-by-circuit backup plan showing what remains powered, expected runtime, startup demand, and any circuits that must be rewired or excluded.

Path-Q

Find the right next step

Answer a few questions and we’ll narrow your options.

Loading…

SQ00610