"Peter Weeke the ****** "
Isolation transformers are critical for any workbench, and after good
hand-tools the first thing any electronic hobb7 person should get...
perhaps even before said tools.
** Totally false.
Isolation transformers need only be used when working on a live chassis
item.
Otherwise, you do NOT need one and using one INCREASES the electrocution
hazard for a technician.
See:
http://sound.westhost.com/articles/electrocution.htm
a.. Do not assume that isolation or stepdown transformers are safe - they
are not. Isolation transformers will cheerfully kill you if you become
connected across the output - an isolation transformer has no active (live)
and neutral. Many stepdown transformers do not provide isolation. Isolation
transformers can lead to a complacent attitude, and one lead can connect to
chassis if there is an insulation failure - with no effect on the equipment
or transformer. The other lead is now a killer! Isolation transformers will
prevent an electrical safety switch from operating if a fault develops on
the isolated side!
....... Phil