Jumpin jazz [low voltage power system]

This article describes the operation and maintenance of a low-voltage power system used to power a jazz cafe. This is not necessarily an important factor in the national economy, but problems encountered and described may be representative many small commercial operations, such as restaurants, grocery stores, drug stores, and similar sized shops. When engineers consider the design for commercial operations, the thought is generally on high-rise type office buildings or some similar facility. What is important to remember is that while there are probably more small installations than large capacity systems, the small shops do not normally have a maintenance crew for support.