An Electrical Design Handbook
Power Atlas
Every concept in electrical design — from the master equipment list to arc flash labels — taught through one reference facility you carry from start to finish.
Sections
39
comprehensive chapters
Spine
DC1
2.5 MW · Tier III
Examples
64
2 worked per section
The Reference Facility
Atlas DC1 — One-Line Diagram
2N · Tier III
UTILITY SOURCE
12.47 kV · 3φ · 60 Hz
Δ
MV SWGR · 12.47 kV
TX-A
2500 kVA · 12.47kV–480Y/277V
%Z = 5.75
TX-B
2500 kVA · 12.47kV–480Y/277V
%Z = 5.75
GEN
GEN-A
2500 kW · 480V · diesel
GEN
GEN-B
2500 kW · 480V · diesel
ATS
ATS-A
ATS
ATS-B
480V SWGR — A · 4000A bus
480V SWGR — B · 4000A bus
N.O. tie
UPS
~/=/~
UPS-A1 · 1250 kVA
UPS
~/=/~
UPS-A2 · 1250 kVA
M
CH-1 · 750T
FLA 480A
M
CH-2 · 750T
FLA 480A
UPS
~/=/~
UPS-B1 · 1250 kVA
UPS
~/=/~
UPS-B2 · 1250 kVA
M
CH-3 · 750T
FLA 480A
M
CH-4 · 750T
FLA 480A
UPS BUS A · 415Y/240V
UPS BUS B · 415Y/240V
IT ROW A · 1.25 MW
IT ROW B · 1.25 MW
Fully detailed in §02