Bests & Worsts Reviews from Amazon

OK, so here's the deal about getting the full 50 advertised amps out of this charger. Yes, you cannot use a 240V wall-plug and it must be hard-wired. You must also buy the following: 1) Buy a 70 amp breaker or special order a 65A breaker. This is because circuit breakers are typically sized to be 1.25 times the full load of the circuit. In this case 50A * 1.25 = 62.5 So any breaker over 62.5 would be acceptable. 2) In order to get the full 50 amps the circuit must be hard-wired. This means that you must run the wire through metal conduit into either the back or bottom of the chargepoint charger. The punchout for the conduit is 3/4 inches in diameter. I'm not sure why this measurement isn't explained in the .pdf instructions or this information is made available online. If your conduit is 3/4 of an inch in diameter you are limited in terms of the maximum wire gauge that you can select. A wire fill chart indicates that you are allowed up to four conductors (wires) with a wire gauge of #6. 3) The terminals on the chargepoint will allow a maximum wire gauge of #6. I tried pushing #4 wire into the terminals and they do not fit. It would have been nice to have the option to install thicker wire for added safety and to compensate for voltage drop over long distances. I'd rather pay more for more expensive wire and to be safer, but the manufacturer decided to prevent us from doing so. 4) The three terminals on the chargepoint only requires the two 120V leads and a ground. There is no need for a neutral wire. Again, why isn't this explained ahead of time? It's almost as if they are hiding information from us to force us to get a pro electrician to wire this thing up. Technically, the metal conduit functions as a ground, but I added a ground wire anyway. 5) You must buy #6 90 degree copper THHN wire for the two hot leads that enter the chargepoint. There is no other safe configuration possible with the limitations imposed by the conduit diameter, and the terminal gauge limitations. You cannot use NM-B wire (trade name: Romex) in metal conduit because the maximum ampacity allowed is 55A. You also cannot use 75 degree wire THW/THWN wire because the ampacity is 65 and it would not work with a 70A breaker. Only 90 degree THHN will work because it will allow up to 75 amps of current. This is more than our breaker so the breaker would trip before the wire overheated or melted. This is what you want for fire protection. I'll save you the trouble of looking up all of the available permutations and lay it out for you in a nutshell. 1) Use 3/4 inch metal conduit 2) Install a 70A breaker 3) Use 90 degree THHN #6 copper wire