6A

6A is an alphanumeric designation used in several different contexts, and there is no single universal meaning. In chemistry, 6A refers to Group 16 in older periodic-table notation, the chalcogens. This group includes oxygen, sulfur, selenium, tellurium, and polonium, and it is characterized by highly reactive nonmetals and certain metalloids.

In electrical contexts, 6A commonly indicates a current rating of six amperes, used on fuses, circuit breakers, and other protective devices. A device marked 6A is designed to carry up to six amperes continuously and to interrupt the circuit if the current exceeds that level, protecting wiring and components.

In high school athletics in some states, 6A designates the largest school size class. For example, the Texas University Interscholastic League uses Class 6A for its largest member schools, organizing competitions to balance participation and competitiveness among similarly sized campuses.

Because 6A is context-dependent, the same label may refer to other classifications in different domains, such as product model numbers or route designations. When encountering 6A, the surrounding information typically clarifies its specific meaning.