If you want a neat way to mount your motor wires to your quadcopter while still keeping the wires protected against the propeller the diatone ESC Motor PDB is what you need. Also known as racewire this is a small PDB that you solder your ESC to one end, and your motor to the other. When you use this racewire PDB, rather than your bent propeller catching onto the motor wires, it will simply slide over the PDB. This PDB essentially replaces 20AWG wires.
This diatone Motor ESC PDB is sold in a set of 3 boards each a different size, a 40mm, 35mm, and 30mm. You will need to order 4 of these for your quadcopter build. If you buy 4 or more you get a small multi buy discount.
When mounting the racewire to your carbon fiber frame please make sure that the PDB is insulated from the carbon fiber to avoid any possibly short circuits.