README.md: Add extra note to C2 wiring

serkri · Apr 23, 2023 · 88f1ed9 · 88f1ed9
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@@ -69,6 +69,8 @@ Make sure to have read the original README.md (e.g. on howto connect to wifi).
       This way the (dangerous) situation is avoided that some Phases are switched ON, and Neutral is switched OFF.
       Note that it is important that you actually DO NOT switch the L1 pin of the CCS plug with the C2 contactor; some cars (e.g. Tesla Model 3) will go into error;
       they expect the charging phase to be on the L1 pin when single-phase charging...
+      Note also that in case the phases cannot be detected automatically (especially when no EVmeter is connected), and SmartEVSE _knows_ it is charging at a single
+      phase (e.g. because Contact2 is at "Always Off"), it assumes that L1 is the phase we are charging on!!
 
     - by default C2 is switched OFF ("Not present"); if you want to keep on charging on 3 phases after installing C2, you should change the setting Contact2 in the
       Setup Menu.