In a single phase 15 kW heater, what is the typical wiring configuration for the heating elements?

In a single-phase 15 kW heater, the typical wiring configuration for the heating elements is parallel. This configuration allows each heating element to operate independently and receive the full line voltage, maximizing the energy output of each unit. When heating elements are connected in parallel, the voltage across each element remains the same (equal to the supply voltage), enabling them to produce their rated power.

For a heater designed to operate at high power, such as 15 kW, a parallel connection ensures that the heater can achieve its full heating capacity efficiently. This is particularly important in residential and commercial heating applications where consistent and effective heating performance is essential.

In contrast, relying on a series wiring configuration would result in the voltage being divided among the elements, which can lead to insufficient power for each element if they are not appropriately matched. This approach would limit the heater's overall output and effectiveness. Therefore, the parallel configuration is the most suitable and commonly used method for such heating applications.