問題一覧
1
Safe Work Distance: 345-362kv:
8’6”
2
Safe Work Distance: 138-145kv
3’10”
3
Safe Work Distance: 72.6-121kv
3’10”
4
Safe Work Distance: 72.5-46.1kv
3’4”
5
Safe Work Distance: 36.1-46kv
2’10
6
Safe Work Distance: 15.1-36kv
2’7”
7
Safe Work Distance: 5.1-15kv
2’2”
8
Safe Work Distance: 751-5kv
2’1”
9
Safe Work Distance: 301-750V
1’2”
10
Safe Work Distance: 50-300v
A/C(50-300v)
11
Safe Work Distance: 24-133VDC
A/C
12
Equipment Grounding Distances: 345kv
20’
13
Equipment Grounding Distances: 138kv
15’
14
Equipment Grounding Distances: 69kv
15’
15
Equipment Grounding Distances: 0-50kv
10’
16
How do you find phasing?
-Prints -Labeled on switch -Inside breaker: Tape on cables A-Red B-Green C-White
17
How do you know what’s Hot & Not
-Find energized line coming in, follow line and visually check for openings -Clearance order gives you your boundaries *Can not work under other people’s grounds*
18
De-Energized
Disconnected from all power sources
19
Dead
Disconnected and Grounded
20
138kv
-3’10”
21
69kv
-3’4”
22
345kv
-8’6”
23
24.9kv
-2’7”
24
14.4kv
-2’2” (14.4kv)
25
12.5kv
-2’2” (12.5kv)
26
7.2kv
-2’2 (7.2kv)
27
240v
-a/c