| Year | 1930 |
| Date | 21-Aug |
| Volume | 63 |
| Issue | 1,528 |
| Page | 180 |
| Category | Electrical |
| Part | |
| Title | Modern Electrical Installation Work |
| Author | Frederick H.Taylor |
| Notes | Relative insulation resistance of the conductors on a two wire system, earthing tests, testing voltage drop, resting the polarity of switches, testing for the "live" main |