From the pictures people have posted of the insides of many charges there are fuses on the 2 power lines and there may be additional protection on the control side as well.
Having the charger fail to work is one thing but causing damage is another.
USE the Correct breaker size.
It would not be too hard to mod the file we use to remote start which now looks at local temperature and monitor local storm warnings and delay charging or use the app to delay charging ?
2012 RED Volt VIN:#C-8860 - Premium Leather Seats Jet Black with Dark Trim, Rear Camera & Park Assist, Nav
09/29/2011 Ordered -- 11/15/2011 took it home