Connecting Power Supplies Together


Joined Oct 2, 2009
Your math is incorrect.
You can get only 48V @ 30A, not 60A.

Do the math.
48V @ 60A PSU is 2880W.
Each PSU can only supply 24V @ 30A = 720W

You can wire the two PSU in series if they are "floating", i.e. not connected to a common ground (or at least one PSU must be floating).


Joined Sep 17, 2013
Connecting power supplies in parallel is ill-advised and, depending on the internal circuitry, could lead to damage.


Joined Jun 4, 2014
Ony if the outputs are floating - no connection to ground - and they don't mine being 48V above ground (you'd need to check that for the suplies you select).

[edit] And for the safety of the supplies you need four 60A diodes reverse conected across the output of each supply


Joined Jun 22, 2012
I added the link do you know if they’re floating or not ?
Sorry i’m not that good in English
Usually the Negative lead on a switchmode psu is connected to Earth Terminal on a Metal case.

It can be removed to make the psu "Floating" then you can connect them in Series.