I am kind of a newbie on solar systems and have a question. I have a Growatt SPS 5000 ES inverter, Eg4 battery. 2.5 KW of solar. I have the PV and battery hooked up and then I test for voltage across ground and L1 I get 0 V, across ground and L2 I get 0 V, but when I test across L1 and L2 I get 240 V. Is this normal? I thought that the L1 and L2 should be 120 V each and read it across the ground. Am I missing something in the settings? Thanks in advance.