P73335u_UPS_man.qxd | 4/30/01 12:19 PM Page 3 |
2. Introduction
2-1 SYMBOLS
En
PROTECTIVE GROUNDING TERMINAL: A terminal that must be connected to earth ground prior to making any other connection to the equipment.
A terminal to which or from which an alternating (sine wave) current or voltage may be applied or supplied.
A terminal to which or from which a direct current or voltage may be applied or supplied.
This symbol indicates the word "phase".
This symbol indicates the principal on/off switch is in the ON position.
This symbol indicates the principal on/off switch is in the OFF position.
May be used in lieu of the wording "Caution Risk of Electric Shock" for any cautionary marking.
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