Turn the main power off before removing panel covers or touching any wires. Always remember safety first. The other, less preferable solution would be to run a sub panel in the new shed off the existing barn sub panel….
Consequently my panel does not include a ground bus. Hi Dominick, Firstly, Thank you for your contribution to this world. The sub panel is not bonded. In my comment below I should have said feeds leaving the top of the current panel sorry. Please enter your email address.