26
3 . s w I TC h G e a r D e s C r I p T I o N
Figure 3.26 illustrates the various components
comprising the vertical main bus bars. Bus bars are
supported by molded or machined barriers. Vertical
bus can be braced depending on the interrupting
rating of the switchgear. Conductors that provide
current to the breaker compartments are called
run in bars and are bolted to the riser bus bars.
Insulated run back bars are for connecting load
conductor cabling.
1. Molded base
2. Vertical riser buses
(cover removed to show bus location)
3. Vertical bus bracing
4. Run in conductors
5. Insulated run backs
1. Vertical bus barrier
2. Insulated bus bar (epoxy coated)
3. Joint cap
4. Nylon thumb screw
—
Fig. 3.25
Bus system
—
Fig. 3.26
—
Fig. 3.25
—
Fig. 3.26
Insulated horizontal
bus system
4
5
1
2
3
2
4
1
3
