Warning, 6. connecting input power to rack – Miller Electric XMT 4-Rack User Manual

Page 14

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OM-815 Page 10

4-6.

Connecting Input Power To Rack

WARNING

ELECTRIC SHOCK can kill.

Do not touch live electrical parts.

Turn Off welding power sources before inspecting or installing rack.

Have only qualified persons install rack.

Installation must meet National Electrical Code and all other codes.

swarn3.1* 2/93

Have only qualified persons make
this installation.

1

Rear Control Box Center

2

Access Panel

Remove access panel.

3

Line Disconnect Device Of
Proper Rating

4

Input Conductors

5

Grounding Conductor

Select size and length using
Table 4-2. Conductors must be
able to carry the combined amper-
age draw of all welding power
sources mounted on the rack. Con-
ductor insulation must comply with
national, state, and local electrical
codes. Use lugs of proper amper-
age capacity and correct hole size.

6

User-Supplied Strain Relief
Connector

Insert conductors through strain
relief.

7

Input Terminal Block

8

Line Terminals

9

Ground Terminal

Connect grounding conductor to
ground terminal first. Then connect
input conductors to line terminals.

Reinstall access panel.

Install grounding conductor and in-
put conductors in conduit or equiv-
alent to deenergized line discon-
nect device.

Connect grounding conductor first,
then line input conductors.

Be sure grounding conductor goes
to an earth ground.

10 Overcurrent Protection

Select type and size using
Table 4-2. Install into deenergized
line disconnect device (fused
disconnect switch shown).

1

2

7

8

4

6

9

5

3

10

ST-151 270-C

5

Figure 4-6. Input Power Connections

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