Which statement is true regarding sequencers in electric heating systems?

Sequencers play a crucial role in electric heating systems by managing the operation of heating elements. The statement that they energize heating elements sequentially is accurate because sequencers are designed to control the order and timing with which each heating element is activated. This sequential activation helps to reduce electrical loads and avoid sudden spikes in energy demand, ensuring smoother operation and more efficient heating.

When heating elements are engaged one after the other instead of all at once, it minimizes the risk of overloading the electrical circuit, contributing to better system performance and longevity. This is particularly important in larger systems where multiple heating elements can significantly increase power consumption if triggered simultaneously. Thus, the correct understanding of sequencers highlights their importance in managing operations efficiently within electric heating systems.