Cities | Type of current |
Frequency of current | Number of phases | Nominal voltage | Number of wires | Frequency stability |
All | a.c. | 60 | 1,3 | 120/240 | 2,3,4 | yes |
Type(s) of plug | |
Type A | |
Type B | |
Type I | |
Type H |
Note(s) | |
1 = The neutral wire of the secondary distribution system is grounded. |