Electrical Heat Tracking: International Harmonization — Now and in the Future

Electrical heat tracing has become a major and more complicated utility subsystem in production plants, increasing the focus placed on its control, monitoring, and electrical supply systems. This is especially true when heat tracing is used for process control. Although the supply of electrical power is governed by local codes and practices, electrical heat tracing is governed by approvals and company practice. In recent years, the Zone System has been introduced in North America, and installations using this classification are starting to appear.