Hobart 60CU20 Operation And Maintenance Manual With Illustrated Parts List page 45

OM-2226 / Operation and Maintenance Manual
60CU20 / Series 500062 / 400 Hz. Generator Set
b) Installing Three-Phase AC Output Cables
The generator set may be shipped without aircraft cables. The output cables connect to the load
contactors, which are located on the power module assembly (left side of the unit beneath the engine
control panel).
The conductor size recommended for AC output cables is 2/0 AWG. Use No. 12 size for control (E
and F) terminals. Large cables (A, B, C, and N) should be equipped with terminals having at least a
3/8-inch diameter mounting hole. Mounting hole in small leads (E and F) should be at least 1/4-inch
diameter.
To install AC output cables proceed as follows:
(1) Open the control box door of the generator set and remove the lower panel.
(2) Remove the Plexiglas cover in front of the power module assembly.
(3) Remove the cover panel on the cable tray covering the cable clamps.
(4) Loosen the screws on the cable clamps.
(5) Route the cables through cable clamps, and up to the load side of the load contactor(s).
(6) Connect the phase cable terminal lugs to the appropriate terminal studs on the contactor(s): cable
lug A to terminal stud A, B to B, and C to C.
(7) Connect the cable's neutral terminal lug securely to the neutral (ground) stud on the power
module assembly.
(8) Connect the E and F cables to the E and F studs on the power module assembly.
(9) Tighten the clamp screws securely, but avoid damage to the cable insulation.
(10) Replace the Plexiglas cover panel and lower panel and close the canopy door.
c) Installing the DC Output Cable (optional)
(1) The DC output cable is not normally supplied unless specifically ordered. For normal aircraft
service, use cable assembly MS90347 with 4/O size cables having a positive and negative
connection.
(2) The output cable is extended through the canopy via the supplied hole and bracket in the frame
assembly (See Figure 3).
(3) The cables will be connected to the output contactor, located under the TR assembly on the right
side (See Figure 4).
May 2, 2013 Chapter 1-2
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