Power supply power

What do you think I need the power of the power supply if the power of the heater on the extruder is 30 watts, there are 3 motors of mute 17 40 mm high and the motor on the extruder is 20 mm high. The bed is fed separately. Will I have enough 24V 100W power supply or need more?

@AKLion this should help https://duet3d.dozuki.com/Wiki/Choosing_the_power_supply
If you have 2A motors even setting them at 1.4A that's over 100W just for the motors (and consider you can't run the PSU at full power 100% of the time).

It sound to me that 100W should be enough. See the link in the above post for how to work it out. The current draw from the PSU due to the motors will be much less than the motor currents you set.

My calculations show that the printer consumes no more than 50 watts of power, I wonder how wrong I am, did anyone take measurements?

@AKLion said in Power supply power:
My calculations show that the printer consumes no more than 50 watts of power, I wonder how wrong I am, did anyone take measurements?
That's possibly slightly low because it implies only about 3W per stepper motor; but it depends on your motor current setting. A rough estimate assuming 6W per motor and 2W per fan would work out at about 65W.

@matt3o said in Power supply power:
If you have 2A motors even setting them at 1.4A that's over 100W just for the motors
Typical motor drivers act as switching power supplies so multiplying the stepper motor by the supply voltage over estimates the power consumption.
I think that the Duet document that was posted here discusses how to compute the power budget of a stepper motor.