| Year | 1930 |
| Date | 27-Mar |
| Volume | 62 |
| Issue | 1,507 |
| Page | 301 |
| Category | Electrical |
| Part | |
| Title | Modern Electrical Installation Work |
| Author | Frederick H.Taylor |
| Notes | Three-wire method of distribution, maintaining equality of pressure on d.c. and a.c., section of neutral, economy of copper, two supply pressures, connection of s.p. switches to the supply mains of a three-wire system, alternating current services & circuits, rate of alteration, two-phase system (four-wire), two-phase system (three-wire), voltage on two-phase three-wire system, application of two-phase systems to lighting heating and power, heating & power circuits |