Spectra Series™ Switchboards
Table of Contents
iii
Chapter 1 – Receiving, Handling, and Storage
Receiving .................................................................................................................................................... 1
Handling .................................................................................................................................................... 1
Storage ........................................................................................................................................................ 1
Lifting Instructions ..................................................................................................................................... 2
Chapter 2 – Installing the Switchboard
Before Installation ...................................................................................................................................... 3
Location ..................................................................................................................................................... 3
Clearance ...................................................................................................................................... 3
Rear Access .................................................................................................................................... 3
Foundation Requirements ......................................................................................................................... 3
Indoor Equipment ........................................................................................................................ 3
Outdoor Equipment ..................................................................................................................... 4
Conduits ........................................................................................................................................ 4
Seismically Certified Equipment .................................................................................................. 5
Field Connection and Testing of Ground-Fault Protection Systems ......................................................... 6
Fuse Selection ............................................................................................................................................. 8
Testing and Inspection .............................................................................................................................. 8
Ground-Fault Protection ............................................................................................................................ 8
Bolts ............................................................................................................................................................ 9
Electrical Clearances .................................................................................................................................. 9
Grounding ................................................................................................................................................ 10
Switchboards Using Cord for Short-Circuit Protection ............................................................................ 10
Before Installation ....................................................................................................................... 10
Installation Procedures for Main Cables when Cable Brace is Provided .................................... 11
Inspection after Main Cable Installation .................................................................................... 11
Chapter 3 – Splicing the Switchboard Sections
Group A Splice Diagrams ......................................................................................................................... 12
Group B Splice Diagrams ......................................................................................................................... 25
Chapter 4 – Connecting the Section Frames ................................................................................. 36
Chapter 5 – Switchboard Maintenance
General Maintenance Procedures ............................................................................................................ 37
Ambient Temperatures and Circuit Loading .......................................................................................... 38
Short Circuits ........................................................................................................................................... 38
Arcing Damage to Insulation ................................................................................................................... 38
Water-Soaked Equipment ......................................................................................................................... 38
Spare Parts ................................................................................................................................................ 39
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