2003 Monte Carlo/2012 Mazda3/2017 Cruze RS Hatch-sold/2018 GMC Terrain
I can agree with the Reddit post, where are some circumstances where you size the breaker not only for the wire size but also what the circuit serves. This is typically in motor loads but it can also be for some other applications. I do agree that using a 15-20 amp breaker would be a safer route, but I really did not want to express that on here because I do not condone to doing any of this….improperly. UL certs probably take a lot of things into consideration, which is why I object to anyone doing this hack. There are a lot of variables that come into play, some that I don’t even understand.While we can't know this happened to the reddit author, what if in the process of melting the wire insulation inside of the power cord or EVSE cord melted just enough to short with some resistance initially before a so-called dead short happened?
One of the reddit comments claims (I haven't created an account yet to look myself) some of the UL tests considers draping cheesecloth on the EVSE electronics to create short circuit conditions. If the cheesecloth catches fire, the test fails. The tests define parameters such as the breaker amperage. I imagine the cheesecloth would more often catch fire if the device was used on higher amperage breakers than it was designed for. If the Bolt's EVSE is the same as some other 30A EVSE, using it on a 50A breaker probably exceeds the testing parameters of its UL certification. I only mention this because ClipperCreek's reputation and UL certification have been leveraged in favor of the Bolt's EVSE on 240V circuits. It seems like it's perfectly safe on 240V using lower amperage circuits.
You can read this comment for yourself here. Let me know what you think.