If you're not the owner of the house and there are other people/ children living in the same building you should not do it. Max 50 amp breaker for a #6 awg or your wire will melt before the breaker trips. Swaping a breaker in a 120/240 v live panel is easy if you do it on regular basis such as electricians but regular joes tend to get nervous and sweaty when doing this you're more likely to do a false manoeuvre when nervous... Use a good flashlight , use insulated screwdrivers so if you make the contact between the busbar and the side of the metal panel you won't be horribly glued to whatever your holding on as you act as the conductor between 100+ amps and the well grounded panel. Be careful don't put your face too close and take your time you should be ok. I'd recommend a heavy duty #6 awg tech wire a 6/3 it has 2 live wire plus neutral, each conductor is braided copper, it has heavy duty insulation, an armored metal armour and an extra layer of insulation on top lf the armour, it's rated 600v, it can be moved installed and re installed many times, it can be buried or go under water. You'll need to go to an electrical equipment supplier to obtain this.. And you'll need to get the appropriate tech connectors also from this electrical supplier and skin this wire appropriately in order for the connectors to be installed correctly.. This type of wire will run anything and is the best type of wire for temporary installation that require big power.
This was an interesting thread...
One rule for working w live electricity should be known by humanity...
Only work with one hand in/around the live wires. Working with both hands could be potentially deadly.
If current flows from one hand to the other, across your heart, the 50Hz frequency could literally stop your heart.
By using only one hand in a live circut you bypass the heart because current flows to ground (your feet).