fuse calculation for power supply

[lostpatrol1]

anyone know what is the formula for sizing the line side of a single phase 24vdc power supply?

TIA!

 

[Rich1955]

It really can't be calculated unless you know the power comsumtion of the componets inside but the rule of thumb that I use is.
If you have a 24v, 60 watt (2.5amp) power supply with a 120 volt primary.
60/2=30 watts or 2.5/2=1.25 Amp

Hope this helps
But if you really want to know read the lable on the Power Supply!!!

 

[leitmotif]

The factory manual may set forth the fuse requirement including make and model.

Dan Bentler