Samlex America ST1000-148 - Manual (Page 21)

20
3-4 Hard-wire Installation
AC wiring connections:
3-4-1. The AC wiring compartment is located on the front panel of the
ST series. Remove the AC wiring compartment cover to gain
access to the AC terminal.
WARNING!
Before you connect AC wiring to the terminals of compartment
cover, ensure to check the label in the compartment for
correct connections. Wrong connection will damage the
inverter.
CAUTION !
It is advised that all the electrical installation should conform to the local
electrical codes and should be carried out by a certified electrician.
When the unit is feeding the internally inverted voltage (Power Status LED is
green, power from the AC input source is not available), the current carrying
conductors connected to the “L” and “N” terminals of the AC output will be
isolated from the metal chassis of the inverter. Hence, during this condition,
when the metal chassis of the inverter is connected to the earth ground, the
“N” terminal of the AC output will not be grounded (bonded) to the earth
ground. Under this condition, the “N” terminal of the AC output will not be a
Neutral in the true sense. Do not touch this terminal as it will be at an
elevated voltage(almost half the value the AC output voltage) with respect to
the metal chassis / earth ground and may produce an electrical shock when
touched!
When the unit is transferring power from the AC input source (Power Source
LED is orange), the grounding condition of the “N” terminal of the AC output
will be the same as the condition of the “N” terminal of the AC input source. If
the AC input source is the power supplied from the utility, the “N” terminal
would be a Neutral in the true sense, will normally be bonded to the earth
ground and will read almost 0 V with respect to the earth ground. In this case,
touching this terminal will not be a shock hazard.
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