Similar to 電気安全環境研究所
2
2
3
3▼-1 trends
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11 (number)
12
12 (number)
13
13 (number)
19
19 (number)
40
40 (number)70
70 (number)
100
100
400
400 (number)
700
700 (number)
1000
1000 (number)
1000000
1,000,000
1048576
NFPA 77
NFPA 79
IEC 61508
IEC 61508
安全器
安全工学
Safety engineering
沖縄電気保安協会
架空地線
Overhead power line#Ground wires
