Proper Install - meant by lic. plumber/ electrician.
plumber did all necessary connections - purged all lines -
before any electrical was supplied to the unit.
the electrician used a digital volt/ohm meter.
thanks for all replies - interesting to me is how this 2 element heater operates
a new tank was installed - plumber/electrician returned - will go back n check for hot water shortly.
"Let's Get It Done"