I have a Siemans breaker panel with a 100A main breaker installed. I would like to have a main breaker handy in the shed. There are two vertical bus bars which are presently connected by a removable insulated strap that crosses the midline. One of these vertical bus bars has a green screw that, if turned, will bond that bar (and the other one too if the strap is left in place) to the metal case.
The connection to power, which once went to a panel in a mobile home now replaced by the shed, arrives underground from the meter box (my meter is on a pole remote from the house and I made the large temp panel there permanent because the service is split there for several uses) in the form of *four* insulated #4s: two hot wires, a neutral and a ground. These are controlled by a 100A 220V breaker at the meter panel.
At the shed, am I supposed to isolate the neutral bus bar (by removing the strap) and connect my neutrals all there and then ground the case with the green screw and connect all my grounds to the now separate ground bus bar? This would replicate the arriving connections and seems right to me, but what do I know?
Any advice will certainly be appreciated.