Dedicated Line Advise

I bought a home for my kids to live in while going to college. Built in 1923, it had a new box installed, actually 2 boxes. One outside box that carried a mains breaker which fed a interior box for the home. Never seen this before. If wanting to work on the interior box with no fear, simply throw the breakers on the exterior. Wish I had used this system when I built my home in 2000.  Now, if I wanted to restructure the breaker positions in my home box I would have the utility company remove the supply meter for the day.

I love these stories.  This is why it is always important to use a volt meter and check to see that the voltage is zero on the phases.

In the utility industry, one always checks hot voltage first to see if the meter is working, then check the "de-energized" circuit to see if it is zero, then go back and check the hot voltage again. to make sure there is no fault with the meter.

Also, as always, it is better to hire a licensed Electrician if one does not know how to do this.  Safer is always better.

enjoy

Cleeds, I agree it is not necessary. However my Square D service panel in the home I built has the input posts exposed such that it would be possible to contact one when swapping around several breakers. 

Now, i don’t know what it would cost to remove/replace the meter.

I like the idea Coli has...  

If your gear will run 220 volt, you will have a lot more power available, and honestly could convert the line you have now to 220 and use a regular plug near by to run the 120 volt stuff. Maybe even save a few $ as it would only take a different breaker.  If you still want the second line I would make it 220 if you have any gear that can use it.