SWITCHING EQUIPMENT 



531 



struction or according to the manner in which the oil circuit 

 breakers are mounted and controlled. Based on design we 

 have: 



1. Vertical panel boards. 



2. Bench boards. 



And, according to method of control: 



1. Self-contained boards. 



2. Mechanically remote-control boards. 



3. Electrically {remote-control boards. 



; 



t Should be sunk in floor slight j 

 ly if Oil Switch Can is to be ' 

 removed with Switch open 





FIG. 334. Arrangement of 2300- volt Switchboard with Mechanically Remote- 

 control Switches Mounted on Open Pipe Work. 



The self-contained switchboard is always of the vertical type, 

 Fig. 333, and has all the apparatus, including the oil circuit 

 breakers mounted near the panels. 



The mechanically remote-control board is also of the vertical 



