I am trying to measure the current in a high voltage DC circuit (over 10 kV) and have an idea I think will work, but I want to make sure before I break equipment or create a dangerous situation due to a misunderstanding.
My plan is to use a multimeter to measure the current (in milli-amps) over a 10 ohm resistor placed in series with the load (the resistance of the load is not known) and between the load and ground. As I am using a normal multimeter with a maximum voltage rating of 600 VDC, I want to make sure that this maximum voltage refers to the potential difference between the two points that I'm measuring and not to the actual voltages involved and that I can accurately measure the current. Additionally, I want to make sure that (even if that is true and the multimeter can measure the current in this way) this method will not make the multimeter charged and dangerous to touch.
If what I'm suggesting will not work, is there a different way to measure current that I am not considering?