Fuel Gas, Listings/Labels, Electrical/Plumbing, Fuel & Vibration (301.6-301.13)
Plain English:
301.6 Fuel Gas-All gas piping, gas-fired appliances, and venting follow the IFGC.
301.7 Listed & Labeled-Appliances must be listed for the application and installed per MI/report.
301.8 Labeling (Agencies) - An approved, independent agency tests representative samples and performs factory follow-up.
301.9 Nameplate Info-Permanent label with maker, model, serial, agency mark and key ratings (electrical, Btu/h, fuel, clearances).
301.10 Electrical-Wiring/controls per NFPA 70.
301.11 Plumbing-Potable/drainage connections per IPC.
301.12 Fuel Types-Match fuel and altitude; conversions only as approved and per MI.
301.13 Vibration Isolation-If spring-isolated, add supplemental restraint (snubbers/cables/limit stops).
On Plans: Why It Matters
Reviewers look for a tight proof chain: standard + edition -> certification/report ID -> exact model -> MI page(s). Gaps trigger redlines (wrong vent system, missing fuel, no restraint on isolated gear).
Field Tip: What to Show (keep it visible)
M-001 (General): "Gas per IFGC. Electrical per NFPA 70. Plumbing per IPC. Appliances installed per MI and listing/evaluation report."
M-601 (Equipment Schedules): Basis of Design (mfr/model), Listing standard + edition, Certification ID (UL/ETL/CSA/AHRI), Fuel & altitude/derate, Electrical (V-Ph-Hz, MCA/MOP), Btu/h & efficiency, Clearances (or MI ref), Vent system type/listing per MI, Isolation and restraint.
M-501 (Details): Vent terminations/clearances, condensate, supports, restraint-with MI page callouts.
M-002 / M-603 (Sequences/Controls): Interlocks that protect labeling intent (parameters, safeties, alarms).
Key Point: Common Approved Marks (cite the actual ID): UL, Intertek/ETL, CSA, AHRI (performance), AMCA (air/sound).
Code Path: What to Show on the Drawings
M-001 (General Notes): 'Gas per IFGC. Electrical per NFPA 70. Plumbing per IPC. Appliances installed per listing and manufacturer's instructions.'
M-601 (Equipment Schedules): include Basis of Design (manufacturer/model), listing standard and adopted edition, certification/report ID, nameplate ratings, and fuel type.
M-501 (Details) and M-002/M-603 (Sequences/Controls): cite MI pages for clearances, supports, penetrations, condensate, and interlocks that protect the listing intent.
Check: 60-Second Plan-Review Sweep
IFGC/NFPA 70/IPC notes are on the relevant sheets.
Each scheduled item shows standard + edition and a cert/report ID.
Fuel type
Venting is the listed system the MI calls for.
Isolation includes supplemental restraint.
Nameplate/clearance data aligns with schedules and MI.
Review Risk:
Equipment schedules that do not identify the exact model prevent verification of the applicable listing and manufacturer installation instructions.
A fuel type or venting-system mismatch places the installed configuration outside the documented approval basis and requires correction or an approved alternative path.
Vibration isolation without supplemental restraint (snubbers, cables, or limit stops) for spring-isolated equipment is a consistent plan review flag per 301.13.
Masterbuild QA Lens
Three things reviewers check immediately against 301.6-301.13: the equipment schedule must show agency listing mark and ratings; gas-fired appliances must reference IFGC or the set will be routed for gas review; electrical connections must cite NFPA 70 on M-001. If any of the three is missing, expect a plan check
Drawing / Submittal Check
For 301.7-301.15 (code applicability to existing buildings and alterations): the permit set must clearly delineate new work from existing-to-remain. For alteration projects, M-001 must state which systems are being altered, what code edition applies to the existing system, and whether the alteration triggers full compliance on any portion. Existing systems that are not being altered but are affected by the new work must be noted.
Common Review Risk
Alteration documents fail to distinguish existing-to-remain, existing-to-be-modified, and new work, leaving the applicable code path and responsibility unresolved.
When To Escalate
Escalate when an existing building alteration triggers a compliance upgrade requirement that was not in the original project budget. The code official has discretion in determining what must be brought into compliance - getting a written determination before the permit is filed establishes the scope so that the budget is accurate.