I'm in BC, Canada. I recently moved into a place that has a subpanel for a suite. The subpanel is connected to a 60A breaker in the main service panel. There are 4 wires running in from the main panel.
My question is: The ground and neutral from the main panel are both connected to the bus that's being used for neutrals; is this incorrect in a subpanel?
The branch circuit grounds appear to all be connected to small bars at the back/side of the panel. I also don't understand how those bars are grounded but that's probably just my lack of knowledge.
I've posted some additional pictures here: https://i.stack.imgur.com/AbVIl.jpg.
(I've read of the poor reputation of Federal Pioneer Stab-lok so I plan to get this replaced anyway. I'm mostly just wondering if this is very wrong, or just "not great".)