London Hydro

London Hydro, Ontario, Canada

As an alternative to ongoing cable replacement, London Hydro asked Novinium to conduct a pilot cable injection project in a large subdivision. Since then, Novinium has gone on to inject more than 174,465 meters of cable for London Hydro and cable failures have declined by 58 percent.

The Color of Money – Part IV

The Color of Money—Part IV In my post of February 27th, The Color of Money – Part I, I gave the big picture answer. In February 28th’s follow-up post we delved into the details of depreciation. On my Leap Day post we deliberated discounting. Today, in the fourth and last post of the series, we…

Neutral Ampacity & Re-closers

Q: In Exhibit E of your proposal you state that cable replacement should be utilized rather than cable injection if the “cable neutral has lower than required ampacity …” I was able to find on Novinium’s website the limits for neutral corrosion, but nothing on the neutral ampacity limits. What are the neutral ampacity limits? Keep in mind that on three phase cable installs we use one-third neutrals. In Exhibit F of your proposal you define “Abnormal Operational Excursion(s).” One of the identified excursions, item (3), is “repeated operations of re-closers.” We use re-closers on all of our circuits. Does this mean that the warranty is void?

Neutral Corrosion Progression

Q: Can you please explain the rate of neutral corrosion? Specifically, do neutrals corrode linearly or in some other fashion? Also, an engineer asked me about stray voltage. We were discussing how Novinium will provide a warranty for a cable segment if 50 percent of the neutrals are good. He said, “Okay, but because of the neutral corrosion, I am having stray voltage issues affecting livestock on dairy farms. This can kill livestock. Stray voltage is also showing up sometimes on communications circuits.” How should I respond?