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What does ``x`` and ``/`` denote in the voltage designations on the nameplate of a single phase transformer (for example: a _S1F transformer with a 240 x 480v primary and a 120/240v secondary?

ISSUE
What does  ``x`` and ``/``  denote in the voltage designations on the nameplate of a single phase transformer (for example: a _S1F transformer with a 240 x 480v  primary and a 120/240v secondary?

PRODUCT LINE
Low Voltage Transformers

ENVIRONMENT
Single Phase

CAUSE
Terminology and product features

RESOLUTION
The ``x`` means ``or`` and the ``/`` means ``and``
WARNING: You cannot connect an ``x`` winding for single phase three wire connection. Example: while you can connect a 120/240 winding for single phase three wire operation, a 120 x 240 winding can only be connected for either 120 or 240 and cannot be used to supply both.

 
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