Glenn Black, a retired engineer, says tingle voltage could be ended by reverting to using an extra wire at the neutral.

“When Ontario was first electrified, there was an extra wire included at the neutral. 

“Somebody came up with a brilliant method of saving money by using the earth to act as the circuit neutral, thereby saving 20 per cent of the cost of stringing wires.

“When a phase imbalance occurs, you get rid of it by creating "tingle voltage". 

“If there was the extra wire, there would be no "tingle voltage" and it would be readily detected as voltage and current in the neutral wire, automatically shutting the imbalanced system down, or preventing "tingle voltage" from bothering people, cows, etc.,’ Black wrote in an e-mail.