If you have Yudian PID controller on furnace, then do the following to reduce power consumption.
Hold Upper Left button for 2-3 seconds.....
Weird characters will appear. (Klingon?)
Press upper Left button 3 or 4 times to see "Loc 0" parameter.
Then, press bottom right button to raise 0 to 808
This unlock the hidden parameters.
Then, press upper left button 14 or more times until you see OPh and some number on bottom (Output High)
This is the parameter right after OPL (Output Low which is used when chamber-temp is under 300C usually)
Lower this value by 5.....This is a scale of 1-100 or sometimes 1-110
We do this for the furnaces we sell.
This reduces Max. power consumption at full-blast.
Depends on transformer in the furnace, and the resistance of the elements, and input Voltage.
Many elements are hand made and have a range of electrical resistance. The length and diameter have large influence on behavior. No Two furnace are exact same in my experience having owned over 50 furnaces for sintering of many many sizes.
For our small furnace that we sell, we have close to Max. (95-110)
For our Largest furnace, we reduce OPh to around 55.
The info on back of furnace is just a close guess. Not correct for many instances.
Again, it depends on input Voltage, Element's electrical resistance, transformer type and wiring, etc....
Scotty