What does the term 'commercial installation' refer to?

The term 'commercial installation' refers to an establishment such as a school or service station because these facilities are utilized for business or public service purposes rather than for personal or residential use. Commercial installations often involve a higher volume of activity and may operate under different regulations compared to residential installations. This encompasses various types of businesses that provide services or goods to the public, differentiate them from private or residential setups, which are generally designed for home use or agricultural activities.

The other options represent types of installations that cater to personal, private, or agricultural needs, and do not fit the definition of 'commercial,' which is specifically tied to business operations and public services.