No, the convention you mentioned specifically applies to GFCI (Ground Fault Circuit Interrupter) outlets. In GFCI outlets, the top screws are typically labeled "LINE," while the bottom screws are labeled "LOAD."
The LINE terminals on a GFCI outlet are intended for connecting the incoming power supply wires, typically from the electrical panel or the source of power. These wires are the "line" wires carrying the electrical current.
The LOAD terminals on a GFCI outlet are used to provide protected power to downstream outlets or devices. When you connect the load wires to these terminals, they are protected by the GFCI outlet and can trip the GFCI in the event of a ground fault or electrical imbalance.
For non-GFCI outlets, there is no specific convention for the placement of line and load connections. Typically, non-GFCI outlets do not have separate line and load terminals. The hot (black) and neutral (white) wires can be connected to either the top or bottom screws, depending on the specific wiring configuration or the preference of the installer. It is essential to follow the local electrical codes and guidelines when installing or working with electrical outlets to ensure proper and safe wiring practices.