switch or circuit breaker for disconnecting it from each operating energy supply
source. In compliance with EN61010-1 for permanently connected equipment
this switch should meet the following guidelines.
a.) It shall be included in the building installation.
b.) It shall be in close proximity to the equipment and within easy reach of
the operator.
c.) It shall be marked as the disconnecting device for the equipment
d.) It shall not interrupt the protective earth conductor.