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Service Upgrades Notice 

Effective January 1, 2010, London Hydro requires the installation of a 200 Amp Meter Base as per the Conditions of Service Appendix C EI-29-R12 Section 2.1.1. for all Underground supplied service upgrades up to 200A, panel changes, service entrance cable relocations, recessed meter base upgrades, or any condition that requires the customer's service to be disconnected. For overhead services up to 100A, a standard rectangular meter base is acceptable.


For existing services with 2" conduit and a TEE fitting, London Hydro will permit the TEE to remain, however the meter base must be changed to 200 amps. London Hydro will still require any recessed meter base services to be upgraded to the current standard. Additionally, if total service isolation is required where the customer's service feed is out of a pull-box, extra time may be required when scheduling the cut/reconnect date to allow the pull box to be located and uncovered.

If you’re a contractor, engineer, law-firm, or you represent another type of business that interacts with London Hydro in our daily activities please let us know how we can be of assistance.

Contact Us

If you are a contractor and you need to contact a representative in our operations department, please email or call (519) 661-4749 and we will respond to your inquiry during regular business hours – 7:30 a.m. to 4 p.m., Monday through Friday. To contact our Accounts Payable department, please email

Need to apply for service?  Email for an application. 

Have an Engineering Question?

Email our knowledgeable electrical engineering staff at They can help you with a range of inquiries including:

  • Application for Service
  • commercial service inquiries
  • easements
  • relocation of London Hydro infrastructure such as poles or guy wires
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