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Electrical Connections Class 1 wiring methods must be used for field wiring connections to terminals of a class 2
circuit. It is the responsibility of the owner/operator to arrange for these procedures to be
performed by a licensed electrical contractor and ensure conformance to all applicable codes
including local codes peculiar to your municipality/city/county and state. Wire size and insulation
type should be as required by NEC (National Electrical Code) and local codes.
Warning:
Never connect this light tower to the electrical system of any building unless a licensed
electrician has installed an approved transfer switch. The national electrical code (NEC)
requires that connection of a generator to any electrical circuit normally powered by means of
an electric utility must be connected by means of approved transfer switch equipment to
isolate the electrical circuit from the utility distribution system when the unit is operating.
Failure to isolate the electrical circuits by such means may result in injury or death to utility
power workers due to backfeed of electrical energy onto the utility lines.
Intended Use The intended purpose of this light tower is to provide portable lighting where main utility power
supply is not available. It is not intended to connect to a building's wiring system.
Protection
Single Phase circuit protection is provided within the light tower.
Electrical Outlets The electrical panel provides a duplex 120V, 20A GFCI receptacle and a 240V, 30A twist lock
receptacle. Both receptacles may be used at the same time as the Light Mast provided the total
electrical load does not exceed the generators rated output. GFCI (Ground Fault Circuit
Interrupter) provides ground fault protection.
Frame Ground Connection
WARNING: Be sure the system is properly grounded before applying power. Do not apply AC power
before you ensure that grounds are connected. Electrical shock can cause serious or fatal
injury. NEC requires that the frame and exposed conductive surfaces (metal parts) be
connected to an approved earth ground. Local codes may also require proper grounding of
light tower systems.
The NEC requires that the frame and exposed metal surfaces be at local ground reference
potential to avoid electrical shock hazard. A local ground reference may require a driven earth
ground conductor at the job site. Make the ground connection as shown in Figure 3-2. Use the
appropriate size wire as required by NEC and local codes.
MN2488
Figure 3-2 Frame Ground Connection
Earth Ground
Nut
Washer
Ground Wire Lug
Washer
Stud
Frame
Receiving & Installation 3-3
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