Connecting Primary Cable

(7) Take the 50 foot cable (1, fig. 2-3)

is a removable cover (5 fig. 2-4) over the trap door (3)

provided for 115 VAC 60 cycle service and feed the free

for cable entrance from under the trailer. Loosen bolts

end down through the trap door under the right cabinet.

and remove this cover. Loosen bolt and raise trap door

Connect it to a 115 VAC 60 cycle power supply. The

(3) of trailer bed.

other end of this cable is connected to OITB-1 and 2

which is located in the lower right side of the left section

(4) Remove the primary cable from its reel

behind a plate that covers the wiring trough. (fig. 2-17).

mount on rear of trailer. Feed one end of this cable up

Close both rear doors.

through trap door (3) and into the cable entrance of the

high voltage cabinet. (fig. 2-4) This cable goes all the

(8) The trailer now has 115 volt service,

way up to the top and is connected to the connections

and the heaters and lights should be turned on when

(1}) of the load break switch. Support cable, using

substation is both in service or out of service. This

separators (2) provided in cabinet.

eliminates moisture within all enclosures. The heater

and light switch is located on the left side wall of the

CAUTION

main breaker section. (fig. 2-13.)

Before primary cable connections are

made, the conductors should be

Connecting Primary Cable.

identified to indicate their phase

(1) Remove the upper and lower rear

relationship

with

the

switch

panels of the high voltage cabinet.

connections.

Make

sure

all

connections are tight.

(2) If the heater switch has been turned on

check to see that the heater in the high voltage cabinet

(5) The fourth conductor is connected to the

is working. If it is not, see Trouble Shooting Section,

ground lug. (4, fig. 2-4.)

table 3-2.

(6) Replace upper and lower rear panels.

(7) The other end of the primary may be

connected at the source. Care must be taken to keep

the phase relationship the same as in the high voltage

cabinet.

(8)

Feed the output cables up

through the trap doors to the low voltage cabinet.

Connect these cables as the situation dictates to the

feed breakers. (fig. 2-3) Support cables so the stress is

not on the connection.

CAUTION

Before feeder cable connections are

made, the conductors should be

identified to indicate their phase

relationship

the

breaker

connections. When connections are

made, make sure they are tight.

(9))

The output ends of the feeder

cables are connected as the situation or installation

dictates.

Figure 2-4. Rear view of high voltage cabinet, panel

(10)

If the removable links have

removed.

been removed, the main breaker is the only one used.

KEY to figure 2-4

'The feeder cable is connected directly to the main

Load break switch primary connectors

breaker output connectors (3, fig. 2-3).

Cable separator and support

Trap door

(11 )

When all feeder cables have

Ground( lug

been connected and are tight, close rear doors. The

Bottom cover

trailer substation unit is ready for service.

(3) The bottom of the high voltage cabinet

2-7