GE Industrial Solutions Power-Vac Metal Clad Switchgear; Section 3 - Manual (Page 16)

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Fig – A(1)-8
View showing stacks bolted together
Step – 7, Make bus connections ( for polyester glass bus supports go directly to step 7c )
a) Position the rubber cushion so that it is approximately in the center of the
porcelain support. Apply RTV sealant ( 0282A3566P005 ) around the rubber
cushion to hold it in place.
b) Gently insert the main bus through the bus support taking care not to break or
chip the porcelain. The main bus should pass through a rubber bus cushion
located inside the porcelain bus support. If the rubber bus cushion falls off, re-
insert the cushion on the busbar as shown in Fig – A(1)-9 and pass the busbar
through the porcelain support.
c) For polyester glass inter-unit bus supports insert the bus through the
corresponding slots in the orange polyester glass material.
d) Make main bus connections at the bus joint. The main bus should be inserted into
its vacant slot between the splice plates. The bus should line up with the main bus
coming into the joint from the other side.
e) Tighten bus connections to between 30 and 35 ft-lb.