why battery dc voltage become Half when we check with
respect to ground for example 120volts + and - terminals
and when we check + terminal with Earth thats 60volts why
60volts same result on 24Volts and with ground 12Volts only
expert answer that thanks
we can not ground the battery.

Answer Posted / omar ashraf

Because In for Example Battery 120v , the + terminal voltage is 60 v and the - terminal is -60 v so the potential difference between its terminals is 60-(-60) =120 ,
When you measure the potential to ground so the + terminal is 60 and the other terminal is 0 so the potential difference is 60-0=60

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