Hi, Innohome support here. We came across this post and saw our answer wasn't as clear as we wanted it to be. Sorry about that!
We cannot really talk about other companies as their products are not our specialty. We can, however, talk about our products and how we do things at Innohome.
To put it shortly, our choice of protection is an electromechanical one.
The solution for DC and AC residual current protection described in our original answer is a very typical one you'll see in a lot of EV chargers. We chose it too, because it is safe, it is cheaper for the user and/or the installer*, and it is in accordance with the standards.
Another commenter pointed out sufficient spark gap. According to the standards, that gap should be 3mm and that is the case in Charlie EV chargers.
Please don't hesitate to mail us support@innohome.com shall any more questions arise
(*Type-A residual current device is a lot cheaper than type-B version. The latter is usually needed if there is no built-in 6mA DC residual current monitor in the charging station.)
We cannot really talk about other companies as their products are not our specialty. We can, however, talk about our products and how we do things at Innohome.
To put it shortly, our choice of protection is an electromechanical one.
The solution for DC and AC residual current protection described in our original answer is a very typical one you'll see in a lot of EV chargers. We chose it too, because it is safe, it is cheaper for the user and/or the installer*, and it is in accordance with the standards.
Another commenter pointed out sufficient spark gap. According to the standards, that gap should be 3mm and that is the case in Charlie EV chargers.
Please don't hesitate to mail us support@innohome.com shall any more questions arise
(*Type-A residual current device is a lot cheaper than type-B version. The latter is usually needed if there is no built-in 6mA DC residual current monitor in the charging station.)
