Lincoln Electric 12716, Operator'S Manual, Page: 15 / 64

A-6
INSTALLATION
MACHINE GROUNDING
Because this portable engine driven welder creates its own power,
it is not necessary to connect its frame to an earth ground, unless
the machine is connected to premises wiring (home, shop, etc.).
To prevent dangerous electric shock, other equipment powered by
this engine driven welder must:
a) be grounded to the frame of the welder using a grounded type
plug, or
b) be double insulated.
When this welder is mounted on a truck or trailer, its frame must
be securely connected to the metal frame of the vehicle. When
this engine driven welder is connected to premises wiring such as
that in a home or shop, its frame must be connected to the system
earth ground. See further connection instructions in the section
entitled STANDBY POWER CONNECTIONS as well as the article on
grounding in the latest National Electrical Code and the local
codes.
In general, if the machine is to be grounded, it should be
connected with a #8 or larger copper wire to a solid earth ground
such as a metal ground stake going into the ground for at least 10
ft. (3.1m) or to the metal framework of a building which has been
effectively grounded. The National Electric Code lists a number of
alternate means of grounding electrical equipment. A machine
grounding stud marked with the symbol is
provided on the front of the welder.
AUXILIARY POWER RECEPTACLES
Start the engine and set the RUN/STOP/IDLE control switch to the
“High Idle” position. Voltage is now correct at the receptacles for
auxiliary power. This must be done before a tripped GFCI can be
reset properly. See the MAINTENANCE section for more detailed
information on testing and resetting the GFCI.
The auxiliary power of the Frontier
®
400X consists of two 20
Amp 120 VAC (5-20R) duplex receptacles with GFCI protection,
one 50 Amp 120/240 VAC single phase (14-50R) receptacle and
one 50 Amp 240 VAC three phase (15-50R) receptacle.
The auxiliary power capacity is 10,000 watts continuous of 60 Hz,
single phase power. The auxiliary power capacity rating in watts is
equivalent to volt-amperes at unity power factor.
The 240 VAC output can be split to provide two separate 120 VAC
outputs with a max permissible current of 50 amps per output to
two separate 120 VAC branch circuits NOTE: These circuits are
opposite polarities and cannot be paralleled. Output voltage is
within ± 10% at all loads up to rated capacity.
The three phase auxiliary power capacity is 11,000 watts
continuous at 60 Hz.
120 VAC DUPLEX RECEPTACLES AND GFCI
A GFCI protects the two 120 VAC auxiliary power receptacles.
A GFCI (Ground Fault Circuit Interrupter) is a device to protect
against electric shock should a piece of defective equipment
connected to it develop a ground fault. If this situation should
occur, the GFCI will trip, removing voltage from the output of the
receptacle. If a GFCI is tripped see the MAINTENANCE section for
detailed information on testing and resetting it. A GFCI should be
properly tested before each use.
The 120 VAC auxiliary power receptacles should only be used with
three wire grounded type plugs or approved double insulated tools
with two wire plugs. The current rating of any plug used with the
system must be at least equal to the current capacity of the
associated receptacle.
CIRCUIT BREAKERS
All auxiliary power is protected by circuit breakers. The 120 VAC
duplex receptacles have 20 amp circuit breakers for each
receptacle. The 120/240V single phase and the 240V three phase
receptacles have a 50 amp 3-pole circuit breaker that disconnects
both hot leads and all three phases simultaneously. (See Figure
A.4)
FIGURE A.4 - AUXILIARY POWER RECEPTACLES
FRONTIER
®
400X
ELECTRICAL DEVICE USE
This machine has been designed to support the power
requirements of common jobsite tools and equipment. However,
due to the nature of auxiliary power output, it is recommended for
the operator to review the sensitivity and protections of any tools
or equipment used with this machine to prevent any damage or
failures.
120 VAC
SINGLE PHASE
RECEPTACLES
120/240 VAC
SINGLE PHASE
RECEPTACLE
240 VAC
THREE PHASE
RECEPTACLE
20A BREAKERS
FOR 120 VAC
GFCIS FOR
120 VAC
50A BREAKER
FOR ALL AUX
RECEPTACLES