Tsurumi’s Operation, Service, and Repair Manual
Operating Instructions
16
3-3
Grounding Provisions
WARNING: TO PREVENT ELECTRICAL SHOCK FROM FAULTY APPLIANCES, THE PORTABLE
GENERATOR SHOULD BE GROUNDED. CONNECT A LENGTH OF HEAVY WIRE
BETWEEN THE GENERATOR’S GROUND TERMINAL AND EXTERNAL GROUND
SOURCE.
WARNING: CONNECTIONS FOR STANDBY POWER TO A BUILDING’S ELECTRICAL SYSTEM MUST
BE MADE BY A QUALIFIED ELECTRICIAN AND MUST COMPLY WITH ALL APPLICABLE
LAWS AND ELECTRICAL CODES. IMPROPER CONNECTIONS CAN ALLOW
ELECTRICAL CURRENT FROM THE GENERATOR TO BACKFEED INTO THE UTILITY
LINES. SUCH BACKFEED MAY ELECTROCUTE UTILITY COMPANY WORKERS OR
OTHERS WHO CONTACT THE LINES DURING A POWER OUTAGE, AND WHEN UTILITY
POWER IS RESTORED, THE GENERATOR MAY EXPLODE, BURN, OR CAUSE FIRES IN
THE BUILDING’S ELECTRICAL SYSTEM.
A.
Electrical Connection Hazards
(1)
If you plan to use the portable generator as a backup for the facility’s power supply, make
sure the connections are made in compliance with applicable laws and electrical codes.
(1)
Connection to a building’s electrical system must be made by a qualified electrician.
(2)
Improper connections can allow electrical current from the generator to backfeed into the
utility lines which may electrocute utility company workers or others who contact the lines
during a power outage. When utility power is restored, the generator may explode, burn,
or cause fires in the building’s electrical system.
B.
Grounding Post Components
(1)
The portable generator is fitted with a grounding post on the right side of the control panel.
The parts that make up the grounding post are shown in the Replacement Parts section.
The grounding post components and their installation sequence are shown in more detail
in Figure 3-4.
(2)
If the grounding post has been disassembled, reassemble as follows:
(a)
Install star washer (68) on screw (69). Insert screw (69) in backside of panel (46).
(b)
Install nut (69) on screw (69) and tighten.
(c)
Install cup washer (70) with sides facing out.
(d)
Install flat washer (71), lock washer (72), and wing nut (73).
C.
Typical Connection of Ground Wire
(3)
Form a loop in ground wire and slip wire between flat washer (71) and cup washer (70).
Tighten wing nut (73).
(4)
Drive ground rod in ground (or attach to known facility ground). Insert free end of ground
wire in clamping screw on rod (or other clamping device) and tighten.
