To become an approved installer of their charge points, one manufacturer requires that you purchase their own EV charge point tester. The device has a single 1363 socket to give a facility for the connection of a standard MFT for convenient Zs and RCD testing. It also has polarity indicators that seem a tad superfluous. However, it is supposed to mimic a connected car so that the function indicators on the charge equipment can be checked. At over £400 it would be interesting to know what it comprises!
