Miller CST 250 Owner's Manual - Page 19
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Print Page3-9. Connecting Input Power To Rack
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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 3-10 or 3-11. 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
3-10 or 3-11. Install into deen-
ergized line disconnect device
(fused disconnect switch shown).
OM-2238 Page 15
Ref. 803 169-A