Chart
Service responsibility demarcation question diagram
Visualize common service responsibility questions for Canadian overhead and underground utility handoffs.
Chart boundary
Does not define legal ownership or responsibility for a specific utility, meter base, service mast, transformer, trench, CT cabinet, or customer project.
one line
Service responsibility zones
Use the one-line map to separate physical assets from responsibility questions before opening the local utility guide.
Scopeutility and service workflowX-axissupply pathY-axisresponsibility / demarcation questionReviewAnnualNextElectrical service connection handoff map
drop and attachment questionOverhead supply
- utility conductors
- point of attachment
- clearance and access source
duct and lateral questionUnderground supply
- civil route
- service duct
- utility connection point
meter / socket / CT questionMetering zone
- meter owner
- customer-owned socket
- approved equipment list
mast / disconnect / panel questionCustomer service equipment
- service mast or raceway
- main disconnect
- panel and downstream loads
Asset questionmeter / mast / duct / CT cabinet
Review pointutility metering and connection guide
Service typeoverhead vs underground
Decision table
Trace overhead, underground, metering, CT, mast, and service-equipment handoff questions before service work.
Scroll sideways to keep row labels aligned with hidden columns.
| Method | Best fit | Watch point | Handoff |
|---|---|---|---|
| Overhead service | Drop, point-of-attachment, mast, weatherhead, and clearance questions | Utility guide controls attachment and access wording | Utility service guide |
| Underground service | Trench, duct, service lateral, and civil responsibility questions | Customer civil work and utility connection scope can split | Underground service guide |
| Metering equipment | Meter base, socket, CT cabinet, and approved-equipment review | Meter ownership and customer-owned enclosure are not the same | Utility metering page |
| Service upgrade | Identify which party changes each physical asset | Outage, inspection, and energization timing are separate | Connection process map |
Notes
- Treat this chart as a planning and conversation aid only.
- Confirm current utility requirements, product markings, manufacturer instructions, and local authority requirements before field work.
- Use the linked calculator or table when the task needs project-specific arithmetic.
Source links
Open the underlying public sources before treating the chart as project guidance.