The device indicated by a rectangular box at the meter typically indicates which of the following service levels?

The presence of a rectangular box at the meter typically signifies a 200-amp service level. This is a commonly recognized standard for residential electrical service in many areas, capable of handling the demands of modern homes, including extensive electrical appliances, heating and cooling systems, and more.

Service capacity is indicated through various features of the electrical panel, and a rectangular meter box is often associated with the infrastructure necessary to support a higher amperage, like 200 amps. This capacity provides sufficient power for most residential needs and can accommodate additional circuits as necessary.

While 100-amp and 150-amp services might use different configurations, such as smaller or different-shaped boxes, the 200-amp service is specifically designed for larger electrical loads, making it more suitable for contemporary homes. Services above 200 amps, like 300-amp, tend to be used for commercial applications or larger custom-built residences, further distinguishing the standard 200-amp service.