Miller CST 280 Manuale d'uso - Pagina 18

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Miller CST 280 Manuale d'uso

3-8. Connecting Input Power To Dual Racks

Tools Needed:
Have only qualified persons make this in-
stallation.
Y Turn Off welding power sources be-
fore inspecting or installing dual
racks.
1
Control Box
Open access door.
2
Line Disconnect Device Of Proper
Rating
3
Input Conductors
4
Grounding Conductor
Select size and length using Section 3-9 or
3-11. Conductors must be able to carry the
OM-213 592 Page 14
6
1
combined amperage draw of all welding
power sources mounted on the rack.
Conductor insulation must comply with
national, state, and local electrical codes.
5
Strain Relief Connector
Insert conductors through strain relief.
6
Input Terminal Block
7
Line Terminals
8
Ground Terminal
Connect grounding conductor to ground
terminal first. Then connect input conduc-
tors to line terminals.
7
3
4
5
8
4
Close control box access door. Tighten
strain relief clamp.
Install grounding conductor and input
conductors in conduit or equivalent to
deenergized line disconnect 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
3-11. Install into deenergized line discon-
nect device (fused disconnect switch
shown).
2
9
3
Ref. 803 534-B