Since PSU’s have to be paid, power consumption becomes a matter! The dear people of livewire updated us with specifications for their moduls:

lw_da_sAFG (both cables attached): 120ma
Dalek Modulator: 70ma
Dual Cyclotron: 50ma
Dual Bissell Generator: 20ma
Frequensteiner: 20ma
Vulcan Modulator: 70ma