Thank you, both, for your replies.
Doh, good question, James. I should have thought to include that information... They are both lab-type power supplies. Tenma and BK Precision...
They are just basic models... Meaning they can set either voltage or current to constant mode, but not both, at the same time. Both are Linear/transformer and 30v/3a.
As Audioguru says, for whichever is set to constant, the other is varied, to maintain the constant. For the test that I need to do, I do not want either to vary. The way I get that to happen is to set the current to constant, above the desired current level test point that I will drive the electronic load's current draw to. So, current and voltage are both maintained, unless I draw too much current, with the e-load, which I do not do, as I am watching the meters and the test level is below the constant current setting.
The problem is that PSUs say 30v/3a, but that is not simultaneously. The available wattage is the number of importance. I need more wattage, than I have available. That is why I am considering connecting them.
If I needed more voltage, I would just connect them in series. I know how to do that safely. But, I have never needed more current and, therefore, I have never connected them in parallel.
James, what kind of problems might come up? How can I avoid those problems?
Thanks, guys.