INSTALLATION

A-4

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FUSE AND WIRE SIZES

Protect the input circuit with the super lag fuses or delay type circuit breakers listed on the Specifications page of this manual for the machine being used. The tripping action of delay type circuit breakers decreases as the magnitude of the current increases. They are also called inverse time or thermal/magnetic circuit breakers.

DO NOT use fuses or circuit breakers with a lower amp rating than recommended. This can result in "nuisance" tripping caused by inrush current even when machine is not being used for cutting or gouging at high output currents.

Use input and grounding wire sizes that meet local electrical codes or see the Specifications page in this manual.

GROUND CONNECTION

Ground the frame of the machine. A ground ter- minal marked with the symbol () is located at the left side of the Input Box Assembly. Access to the Input Box Assembly is at the top-rear of the machine. See your local and national electrical codes for proper grounding methods.

INPUT POWER SUPPLY CONNECTIONS

A qualified electrician should connect the input power supply leads to the L1 and L2 terminals on the Input Box Assembly Terminal Block.

1.Follow all national and local electrical codes.

2.Follow Input Supply Connection Diagram located on the inside of the access door.

3.Use a single-phase line or one phase of a three-phase line.

4.Connect leads to machine's terminal block. See Figure A.2.

a.For #8 AWG wire (8.4mm), connect leads directly to machine's terminal block.

b.For #10 AWG wire (5.3mm), connect leads to terminal block using the ferrules (S19117-1)provided.

(1)Strip 1/2" (12.7mm) of insulation from wire.

(2)Place ferrule over wire.

(3)Connect to machine terminal block.

c.Tighten screws to 16 in/lbs (1.8 N.M.)

GND.

L1 L2

TERMINAL

BLOCK

 

 

 

RECONNECT

 

 

 

PANEL ASSEMBLY

For #10 (5.3mm2)

.50"

 

 

AWG Wire Only

 

(12.7 mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Strip #10 (5.3mm2) Wire

Place Ferrule (S19117-1) Over Wire as Shown

Before Insertion into Machine Terminal Block.

FIGURE A.2 - Input Power Supply

Connections.

PRO-CUT 60

Page 11
Image 11
Lincoln Electric SVM104-A service manual Fuse and Wire Sizes, Ground Connection, Input Power Supply Connections