I just recently installed a 50A two pole GFCI circuit breaker that was part of a 240VAC spa panel. For 50A I was using 6 AWG wires. When connecting up this type breaker you connect the two poles of the breaker to the two hot load connections and then the neutral wire of the load also connects to the "white" marked terminal of the two pole breaker. From the breaker there is a short coiled white wire that gets connected to the neutral bus bar in the electrical box.
I noticed that the coiled wire is decidedly smaller gauge that the #6 AWG wires I was using for the circuit connections. From a guess without measuring the size I would say it was 10 AWG.
So here is my question. This coiled wire will be asked to carry the neutral current from the load back to the neutral bus bar. Why is it not a wire normally rated for 50A?