Is three phase cheaper to run than single phase?

  1. It is not normally cheaper to run kilns on three phase power vs single phase power.
  2. You still use the same amount of KW hours regardless of the phase of the power.
  3. In some areas there may be cheaper rates for three phase power so you might check on this if three phase is available to you.
  4. The main reason that three phase is used is that the size of the wires and circuit breaker or fused disconnect is dramatically smaller than with single phase for the same amount of KW.
  5. This is particularly important for larger kilns.
  6. On our Easy-Fire kilns we take advantage of the fact that we can get more power from 3 phase and still keep under the 48 amp limit for the power cord.