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AC POWER SPD REQUIREMENTS CHAPTER 7: SURGE PROTECTIVE DEVICES
TABLE 7-1 REQUIRED TVSS PROTECTION FOR VARIOUS SERVICE TYPES (CONTINUED)
Service Type
• Within other building or
structure utilizing a
separately derived system
supplying equipment area
C
(Figure 7-4)
Stand-alone Building/shelter with Generator
Main service disconnect and all
panelboards located within the
same shelter, room or equipment
area
Main service disconnect located
outside the equipment area
(greater than 3 m (10 ft.)):
• At fence or property line
utilizing a separately
derived system supplying
equipment area
• Within other building or
structure utilizing a
separately derived system
supplying equipment area
D
(Figure 7-5)
E
(Figure 7-6)
F
(Figure 7-7)
Type 2
or
Type 1 2
Type 2
or
Type 1 2
Type 2
or
Type 1 2
Equipment Area Located within a Larger Structure without Generator
Main service disconnect located
in another part of same structure
utilizing a separately derived
system supplying equipment area
Main service disconnect located
within another structure utilizing
a separately derived system
supplying equipment area
G
(Figure 7-8)
H
(Figure 7-9)
Equipment Area Located within a Larger Structure with Generator
Main service disconnect located
in another part of same structure
utilizing a separately derived
system supplying equipment area
Main service disconnect located
within another structure utilizing
a separately derived system
supplying equipment area
Interconnect
Diagram
(Fig. No.)
I
(Figure 7-10)
J
(Figure 7-11)
Main
Disconnect
Main
Panelboard
or Feeder
Side of ATS
Type 2
or
Type 1 2
Type 2
or
Type 1 2
Utility
Panelboard
Utility
Panelboard
in Other
Bldg./Shelter
Equipment
(If > 3 m
(10 ft.) from
panelboard)
Type1 Type 3 1
Type 1 Type 3 1
Type 1 Type 3 1
Type 1 Type 3 1
Type 1 Type 3 1
Type 1 Type 3 1
Type 1 Type 3 1
Type 1 Type 3 1
7-8 68P81089E50-B 9/1/05