Garage near a 3 chain feeder? Just bought a house and the garage has a 3 line feeder...

Just bought a house and the garage has a 3 line feeder and iam looking for the safest temporary fix until i can take a new feeder trenched surrounded by. Would it be safer to pound a ground rod and isolate my grounds and neutrals for a few weeks or should i just start out it with the grounds and neutrals together for the time self
Why are my rads luke reheat after self...
KISS principle!
Drive the grnd. install a isolated grnd. buss.

Cold sea dampen is coming out of both...
I looked inside my own household electrical box. All the grounds and neutrals are tied together at the grounding buss
bar. Also, check near an AC voltmeter to see whether the
3-wire feeder to your garage is a 240-volt line, or a 120 flash.
Static pressure and investigational furnace/ductwork?
Answers:    Drive the ground rod and establish a ground to your garage. Then run 3 new wires contained by conduit in your untried trench. You still will have to isolate your indistinct in the garage, but you wont hold to bring a ground in from the house panel. Do not bond your grounds and neutrals within the garage panel!