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OM-189 507 Page 9
3-5. Connecting Input Power
802 664
Have only qualified persons make
this installation.
Remove wrapper.
1 Line Disconnect Device Of
Proper Rating
Obtain and install line disconnect
device.
2 Input Conductors
3 Grounding Conductor
Select size and length using
Section 3-6. Conductor rating must
comply with national, state, and
local electrical codes.
4 Disconnect Device Ground
Terminal
Install and connect 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.
Reinstall wrapper.
5 Overcurrent Protection
Select type and size using Section
3-6. Install into deenergized line
disconnect device (fused
disconnect switch shown).
6 Unit Fuse Block
Internal replacement fuses:
230 V – KTKR30*
460 V – FWC25A10F
Tools Needed:
5/16 in
1
5
3
4
2
6
*Due to low duty cycle, fusing requirements
can be derated for 230 V operation.
3-6. Electrical Service Guide
Input Voltage 230 460
Input Amperes At Rated Output 44 22
Max Recommended Standard Fuse Rating In Amperes
1
Normal Operating
2
60 30
Min Input Conductor Size In AWG/Kcmil 10 14
Max Recommended Input Conductor Length In Feet (Meters)
100
(31)
159
(49)
Min Grounding Conductor Size In AWG/Kcmil 10 14
Reference: 1999 National Electrical Code (NEC)
1 Consult factory for circuit breaker applications.
2 “Normal Operating” (general purpose – no intentional delay) fuses are UL class “K5” (up to and including 60 amp), and UL class “H” ( 65 amp and
above).