GridMatch
Tag

Critical loads

Guides tagged with critical loads.

Portable home backup battery cabled to a transfer switch beside an open electrical panel in a basementSpecs & Sizing

Do You Need a Transfer Switch for a Home Backup Battery?

A home backup battery is not automatically a backup system for the house. The overlooked decision is how power reaches the appliances: cords, a selected-circuit transfer switch, or an installed whole-home path.

8 min read
Clamp meter and handwritten sump pump watt math beside a portable backup batteryHome Backup

Can One Backup Battery Run a Sump Pump and Furnace Blower? Startup Watt Math and Circuit Choices

For a sump pump and furnace blower, the decisive specification is often not the battery’s advertised kWh. A pump can demand a sharp startup surge while the furnace needs a usable circuit and enough uninterrupted power to complete its sequence. This guide turns those constraints into a realistic sizing and installation decision.

8 min read