A safety function that shuts a grid-tied inverter off when grid power fails, so it cannot energize lines that utility crews are working on. More
GFCI outlet
A ground-fault circuit interrupter outlet, which cuts power when current leaks to ground. Some plug-in kits call for an outdoor GFCI outlet.
Interconnection agreement
The utility approval a home generator normally needs before it connects to the grid. Plug-in solar laws exempt small certified systems from it. More
IP rating
Ingress protection code for dust and water, such as IP65. Says nothing about electromagnetic shielding.
kWh
Kilowatt-hour: 1,000 watts for one hour. Electric bills and battery capacities are measured in it.
LoRa
A long-range, low-data-rate radio technique used by MeshCore and Meshtastic.
mAh
Milliamp-hours. Multiply by the battery voltage and divide by 1,000 to get watt-hours.
Microinverter
A small inverter that turns one or two panels' DC power into household AC power. In a plug-in kit it connects to the outlet. More
Plug-in solar
A small solar setup, usually one or two panels and a microinverter, that feeds power into a home through a standard outlet. Also called balcony solar. More
Transfer switch
A switch, installed by an electrician, that lets a battery or generator power house circuits while disconnecting them from the grid.
UL 3700
The US safety standard written for plug-in solar equipment. UL Solutions published it in December 2025 and opened certification in January 2026. More
USB-C Power Delivery (PD)
A negotiation between charger and device over voltage and current. A USB-C cable alone does not guarantee enough power.