Miller Electric 1251 Owner's Manual download pdf (Page 20)

OM-201 872 Page 16

4-9. Connecting 3-Phase Input Power

803 766-A / 802 183

Y Installation must meet all National

and Local Codes − have only

qualified persons make this

installation.

Y Disconnect and lockout/tagout

input power before connecting

input conductors from unit.

Y Always connect green or green/

yellow conductor to supply

grounding terminal first, and never

to a line terminal.

. The Auto-Line circuitry in this unit

automatically adapts the power

source to the primary voltage being

applied. Check input voltage available

at site. This unit can be connected to

any input power between 208 and 575

VAC without removing cover to relink

the power source.

1 Input Power Cord.

2 Disconnect Device (switch shown in

the OFF position)

3 Green Or Green/Yellow Grounding

Conductor

4 Disconnect Device Grounding

Terminal

5 Input Conductors (L1, L2 And L3)

6 Disconnect Device Line Terminals

Connect green or green/yellow grounding

conductor to disconnect device grounding

terminal first.

Connect input conductors L1, L2, and L3

to disconnect device line terminals.

7 Over-Current Protection

Select type and size of over-current

protection using Section 4-7 (fused dis-

connect switch shown).

Close and secure door on disconnect

device. Remove lockout/tagout device,

and place switch in the On position.

= GND/PE Earth Ground

L1

2

1

L2

L3

3

3

4

5

6

7

Tools Needed:

3/8 in

3/8 in

1 ... 19 20 21 ... 60

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