General discussion • Re: Powering multiple RPi with 300W PSU

1. Either will be adequate, indeed overkill. You don't need more than 20A (and that is generous for 2xPi5, Pi4B and Pico).
2. Cables should be 18 AWG minimum, and as short as possible. Thinner is okay if doubled, or for the Pico.
3. If using GPIO header power input, use two pins for each of 0V and 5V, at least for the Pi5s.
4. The supply does not do USB-PD, so you will need to configure the Pi5s to allow maximum peripheral current.
5. This type of supply MUST be enclosed, in a fingerproof housing. Either plastic or earthed metal. All cables MUST be properly secured to the housing. You will need to check you local Codes of Practice for the details. If you don't know what this means and implies, get help from someone local who does.
6. You need to consider fuses or other overload protection for each individual supply. The safety of the Pi4B supply relies on external current limiting. The details of the Pi5 arrangements are not public, but may be similar.

Statistics: Posted by davidcoton — Fri Jul 05, 2024 11:21 am