I have a design where I have a 48V input that I
monitor with the PIC, but the ground for this is
isolated from the rest of the circuit.  The 48V goes
thru a resistor divider to be in the range of the PIC
(100:1) and I just need to know if its within a range,
not looking for accuracy.  So, since the source is
isolated from the ground that the other resistor is
tied to, will I see any problems, or better to tie the
divider across the 48V and the isolated ground?

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