Lincoln Electric SVM153-A Welding Output Cables, Machine Grounding, Auxiliary Power Receptacles

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A-7 A-7

INSTALLATION

WELDING OUTPUT CABLES

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With the engine off, route the electrode and work cables through the strain relief bracket provided on the front of the base and connect to the terminals provided. These connections should be checked periodically and tightened if necessary.

Listed in Table A.1 are copper cable sizes recommend- ed for the rated current and duty cycle. Lengths stipu- lated are the distance from the welder to work and back to the welder again. Cable sizes are increased for greater lengths primarily for the purpose of minimizing cable voltage drop.

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 water pipe going into the ground for at least ten feet and having no insulated joints, or to the metal framework of a building which has been effectively grounded. The U.S. National Electrical 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.

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TABLE A.1 – COMBINED LENGTH OF

ELECTRODE AND WORK CABLES

	Total Combined Length of
	Electrode and Work Cables
Amps
@ 100%
Duty Cycle	Up to 150 ft.	150-200 ft.	200-250 ft.
500	3/0 AWG	3/0 AWG	4/0 AWG

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 con- nected 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 sec- tion entitled Standby Power Connections as well as the article on grounding in the latest U.S. National Electrical Code and the local code.

AUXILIARY POWER RECEPTACLES

The auxiliary power capacity of the Commander 500 is 12,000 watts of 60 Hz, single-phase power. The auxil- iary power capacity rating in watts is equivalent to volt- amperes at unity power factor. The maximum permis- sible current of the 240 VAC output is 50 A. The 240 VAC output can be split to provide two separate 120 VAC outputs with a maximum permissible current of 50 A per output to two separate 120 VAC branch cir- cuits. The output voltage is within ± 10% at all loads up to rated capacity.

NOTE: The 120/240V receptacle has two 120V outlets of different phases and cannot be paralleled.

The Commander has two 20A-120VAC (5-20R) duplex receptacles and one 50A-120/240 VAC (14-50R) receptacle. The 120/240 VAC receptacle can be split for single-phase 120 VAC operation. The 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 cur- rent capacity of the associated receptacle.

STANDBY POWER CONNECTIONS

The Commander 500 is suitable for temporary, stand- by or emergency power using the engine manufac- turer’s recommended maintenance schedule.

The Commander 500 can be permanently installed as a standby power unit for 240 volt, three-wire, 50 amp service. Connections must be made by a licensed electrician who can determine how the 120/240 VAC power can be adapted to the particular installation and comply with all applicable electrical codes. The follow- ing information can be used as a guide by the electri- cian for most applications. Refer to the connection dia- gram shown in Figure A.2.

COMMANDER 500