True or False: Porcelain insulators are usually one piece for voltages below 23,000 v and two pieces for voltages from 23,000 to 46,000 volts.

Porcelain insulators are indeed typically designed as one piece for lower voltage applications, specifically those under 23,000 volts. This design allows for effective insulation and mechanical support in the medium voltage range. When voltages rise above 23,000 volts and extend up to 46,000 volts, the electrical requirements increase, necessitating a two-piece design. The two-piece configuration provides enhanced performance, allowing for better insulation and the handling of higher electrical stress due to the increased voltage levels. This transition from one-piece to two-piece designs is a standard practice in the manufacturing of porcelain insulators to ensure safety and reliability in electrical systems.