Plain English:
Project Basis Gate
This article explains the 2024 IMC model-code path. Before project use, confirm the adopted code edition, local amendments, controlling administrative provisions, permit-application date, and current AHJ procedures. The locally adopted requirements control.
Connection requires authorization (109.1): No one may connect gas, power, water, or other utilities to IMC-regulated systems until the code official authorizes it.
Temporary connection (109.2): The code official may allow temporary utility service for testing/commissioning or limited temporary use. Get it in writing.
Authority to disconnect (109.3): The code official may shut off utilities in an emergency, if a system was connected without authorization, or if the system poses an imminent danger to life or property - even if it was originally properly connected. They'll notify the utility and, when possible, the owner/agent/occupant before disconnecting (or as soon as practical after). An emergency disconnect can happen without prior notice.
On Plans: Why It Matters in Design & Construction
Unauthorized energization is a fast track to stop-work, penalties, and safety incidents (think unvented startup, raw-gas leaks, live equipment without clearances). Plan your commissioning sequence and utility releases so testing is legal, safe, and documented-and so an emergency disconnect doesn't delay your schedule.
Code Path: What to Show
M-001: Note the utility connection sequence - which utilities require AHJ authorization before connection.
Show all shutoff locations on the drawings (gas, electric, water) for each system.
For temporary connections: reference Section 110 and confirm authorized duration.
Check: Before You Energize
Confirm inspection is passed and written AHJ authorization is in hand before connecting any utility.
File utility service release forms and align meter-set and power-on dates with the commissioning plan.
Verify all controls and safety devices are active before any partial energization.
Review Risk:
Don't energize any system without AHJ inspection clearance - unauthorized energization is a fast stop-work trigger.
Don't bypass lockout-tagout (LOTO) for partial energization during commissioning.
Don't confuse the utility provider's service release with AHJ authorization - they are separate requirements.
Field Tip:
Before you energize anything:
1. Inspection path: Pass required inspections and get written AHJ authorization (temporary or final).
2. Utility release: File the utility's service release form; align meter set / power-on dates with your commissioning plan.
3. Controls & LOTO: Verify controls/safeties are active; use lockout-tagout for partial energization.
4. Emergency plan: Post shutoff locations (gas/electric/water), notify the GC and owner, and assign a single point of contact during testing.
Masterbuild QA Lens
Service utility shutoffs are life-safety infrastructure. Confirm that every disconnect, shutoff, and control isolation point is accessible, labeled, and located as required. If the project connects to or modifies existing utility connections, coordinate the shutdown plan and AHJ notice requirements before construction starts.
Drawing / Submittal Check
M-001 should note the utility connection sequence: which utilities require AHJ authorization before connection, which require a final inspection vs. a temporary approval, and who is responsible for coordinating the utility release with the service provider. For renovations, note the existing utility shut-off locations and the coordination plan with the building owner.
Common Review Risk
The most common utility connection error is energizing a system before the required inspection or authorization. In renovation projects, this often happens when a contractor assumes the existing utility connection is already authorized for the new equipment. Confirm the authorization requirement applies to the specific piece of equipment being connected, not just the circuit.
When To Escalate
Escalate when an AHJ or utility provider refuses to authorize service connection due to unresolved inspection hold points, or when an emergency disconnect threatens an occupied building and a temporary authorization needs to be documented fast.