Connecting Input Power To Rack - Miller CST 280 Rack Owner's Manual

3-8. Connecting Input Power To Rack

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7
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6
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4
8
Have only qualified persons make
this installation.
Y Turn Off welding power
sources before inspecting
or installing rack.
1 Control Box
Open access door.
2 Line Disconnect Device Of
Proper Rating
3 Input Conductors
4 Grounding Conductor
Select size and length using Sec-
tion 3-9 or 3-10. Conductors must
be able to carry the combined am-
perage draw of all welding power
sources mounted on the rack. Con-
ductor insulation must comply with
national, state, and local electrical
codes.
5 Strain Relief Connector
2
Insert conductors through strain
relief.
6 Input Terminal Block
7 Line Terminals
9
8 Ground Terminal
Connect grounding conductor to
ground terminal first. Then connect
input conductors to line terminals.
3
Close control box access door.
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.
9 Overcurrent Protection
Select type and size using Section
3-9 or 3-10. Install into deenergized
line disconnect device (fused
disconnect switch shown).
OM-221 611 Page 15
Ref. 803 169-A