I am trying to determine the necessary power supply specs/requirements for a set up I've been working on. Doing some background research on the subject of course brings one to the Power Equation (P=I*V).
I already have the rated voltage and amperage requirements for most of my components. An example list goes as follows:
- Motor 1 - 30V, 4 Amps
- Motor 2 - 30V, 4 Amps
- Peripheral 1 - 30V, 2 Amps
- Peripheral 2 - 30V, 2 Amps
- Peripheral 3 - 30V, 2 Amps
- Controller Board - 5V, .5 Amps
Based on the examples I have seen, one performs the power equation on each item and then these can be individually summed up, which gives me a total of 422.5 Watts.
My first question, is this the correct procedure ?
Second, in addition to the watt rating of the power supply I also see power supplies have a 'max current out' rating... How does this figure relate to the power calculation above ? Or I can understand I need a power supply that is rated at least 422.5, but is the required max amperage out dependent on the highest single consumer in the system (i.e. max amperage out of at least 4 amps)? Or is it somehow determined by some other formula ?