Which of the following is defined as equipment that includes an oil burner, piping, wiring controls, and related devices?

The term specifically refers to the combination of components such as an oil burner, piping, wiring, controls, and related devices that are used to create a heating system powered by oil. This type of equipment is designed for the combustion of fuel oil, which is critical in heating applications.

When considering other options, gas burning equipment refers to systems that utilize gas as a fuel source and would not apply to oil-based systems. Electric heating apparatus specifically includes devices that operate on electricity, and thus do not involve combustion processes at all. A fuel oil system could imply the whole infrastructure used for oil supply but does not specify the inclusion of the burner and related components that are intrinsic to oil burning equipment. Therefore, the definition aligns accurately with oil burning equipment, highlighting its specific characteristics and functions.