"bob haller" wrote in message
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On Monday, January 26, 2015 at 9:42:53 PM UTC-5, yyy378 wrote:
How to minimize voltage drop caused by heavy machine?

We have a typical office environment including computers, scanners,
lights, etc. However, we also have a 14" saw. When it starts, the
voltage drops for a split of a second. This has no immediate effect
except on the scanner. Even though the scanner is plugged into an
uninterrupted power supply, if the saw starts and the scanner is in the
middle of scanning, the scanner will stop and scanning is aborted. When
the saw starts, the uninterrupted power supply produces a click sound.
It seems the protection mechanism is kicked in. Why are the computers
not affected but only the scanner?

The saw starts roughly every two minutes. This renders the scanner
useless. Is there a device I can add to the saw to minimize the voltage
drop? Thanks in advance for all the help.

Back in the 1970s I worked as coiper service tech. Our buildings wiring
was ancient and undersized. copies either came out too light or way too
dark depending on the line volatege at the time of the copiers use

my work around was to set the exposure lamp as brite as possible, then the
key operator could use a high wattage dimmer to darken the copies as
needed......

it worked well for a couple years till the building was demolished for a
highway project

then what happened?