S&C Omni-Rupter, Installation Manual

8

    S&C Instruction Sheet 765-500

Installation

Operating Pipe Preparation

If desired, the vertical operating pipe can be cut 
to length (if not precut at the factory) before 
proceeding to the job site. The standard lengths 
of pipe supplied measure 6



-10



. Cutting dimen-

sions are shown on the erection drawing.

Mounting to Wood

When mounting the switch and its operating 
mechanism to a wood pole, it is recommended 
that suitably sized square washers be placed 
under the nuts. The use of spring-type washers 
between the square washers and nuts is also 
recommended to compensate for wood-pole 
shrinkage and thus maintain fastener tightness.

Step 1

Drill two 

¹¹⁄₁₆

-inch diameter holes in the utility 

pole at the desired height for mounting the 
switch. Refer to the erection drawing for details.

Step 2

Insert two 

⁵⁄₈

-inch diameter through-bolts (not 

furnished) in the holes drilled in Step 1 and 
secure loosely with the necessary square wash-
ers and nuts in such a manner that the heads of 
the bolts project sufficiently from the face of 
the pole to engage the switch-base mounting 
bracket.

Mounting the Switch—Upright 
Mounting Configuration

Step 3

Ç

 WARNING

Lift the switch using the lifting brackets 
provided. Do not allow lifting slings to stress 
switch parts. Avoid allowing switch to swing 
while lifting.

Lifting the switch by the live parts or pole-

unit bases will damage the switch. Rough 
handling may cause misalignment of the 
blades and contacts.

Failure to lift the switch properly 

can result in switch damage, causing 
improper operation, arcing or electri-
cal shock.