Map and Label Residential Circuits

A. Finished-Project Specification

Quantity: one completed circuit map and one completed panel directory covering every accessible receptacle, switch, lighting point, and fixed load in the defined mapping area, each assigned to a confirmed breaker or listed as an unresolved condition, produced without removing a panel cover, device cover, or exposing an energized conductor.

B. Circuit-Mapping Schedule

Item	Target Condition	Verification Method
Mapping area	Rooms, fixtures, receptacles, appliances, and panels defined and does not change mid-project	Written record on floor-plan worksheet
Load labeling	Every accessible outlet, switch, lighting point, and fixed load numbered before testing begins	Visual inspection of the completed worksheet
Critical-load identification	All loads that must not be interrupted without a special procedure identified before breaker operation begins	Written record and owner interview
Breaker-to-load assignment	Each accessible load assigned to a confirmed candidate breaker or marked unresolved	Controlled breaker operation with plug-in tester observation
Confirmation	Each assignment confirmed at a second device or outlet where practical	Direct observation at a second test point
Receptacle testing	Accessible receptacles tested for polarity, ground, and GFCI indications with covers intact	Listed plug-in receptacle tester
Directory accuracy	Replacement directory matches confirmed field findings and covers no required equipment markings	Side-by-side comparison with the circuit map

C. Material Takeoff

• Testing equipment: one listed plug-in circuit-identification tester or lamp, and one listed plug-in receptacle tester.
• Documentation materials: one floor-plan worksheet per mapped area, adhesive labels or a replacement directory card, and a pencil or pen.
• Communication equipment: a two-way radio or phone for the panel operator and test-location observer.
• Photographic record: photographs of the existing directory before changes and the completed directory after changes.

D. Acceptance Standards

Check	Standard
Coverage	Every accessible outlet, switch, lighting point, and fixed load in the mapping area is assigned to a breaker or listed as unresolved
Confirmation	Every assignment is confirmed at a second device or outlet where practical before being recorded as final
Critical-load protection	No critical load is interrupted without following its special procedure
Breaker restoration	Every non-controlling breaker is returned to its original position immediately after each trial
Directory legibility	Replacement directory is durable, legible, and does not cover any required equipment marking
Unresolved conditions	Every multiwire, tied-breaker, or unexpected cross-circuit indication is recorded with enough detail for qualified review
Scope compliance	No panel cover, deadfront, or device cover was removed at any point in the project

E. Mapping-Area Definition and Documentation Review

1. Define the rooms, fixtures, receptacles, appliances, and panels included in the mapping project. Record the boundary in writing before proceeding to Step 2.
2. Obtain owner authorization and review the existing directory and electrical plans. Note any information that suggests likely circuit groupings or flags a prior issue.
3. Identify critical loads that must not be interrupted without special procedures. Record each one and its required special procedure, such as a temporary generator or a monitored bypass, before testing begins.

F. Load Labeling and Inspection

1. Inspect receptacles, switches, fixtures, and covers for damage before testing. Record any damaged device and exclude it from energized testing until it is repaired or replaced.
2. Number or label each accessible outlet, switch, lighting point, and fixed load on a floor-plan worksheet. Complete this labeling for the entire mapping area before any breaker is operated.

G. Controlled Breaker Trials

1. Plug the listed circuit-identification lamp or plug-in tester into the first receptacle. Confirm the tester indicates power before proceeding.
2. Have one person remain at the test location and one authorized person operate breakers where practical. Maintain direct communication for the entire session.
3. Open one candidate breaker at a time and verify the affected load. Confirm the observed result before moving to the next candidate.
4. Return noncontrolling breakers to their original state before continuing. Confirm each returned breaker before opening the next candidate.
5. Confirm the circuit using at least one additional device or outlet where practical. Record the confirming location alongside the original test point.
6. Record all receptacles, lights, smoke alarms, appliances, exterior outlets, and other loads that lose power together. Complete this record for the current candidate breaker before proceeding to the next one.

H. Energized Receptacle and Protection-Device Testing

1. Test accessible receptacles with a listed plug-in tester while covers remain installed. Do not remove a receptacle or device cover to test it.
2. Record indicated polarity, ground, or GFCI concerns without opening energized devices. Note the tester's exact indication rather than an assumed cause.
3. Identify GFCI-protected downstream outlets using the device test procedure where authorized. Use only the device's own test and reset buttons for this check.
4. Identify AFCI or dual-function protection from listed breaker markings and test buttons without removing the panel cover. Record the marking and test-button result exactly as observed.
5. Note multiwire, tied-breaker, or unexpected cross-circuit indications for qualified review. Do not attempt to resolve these conditions independently in this chapter.

I. Repetition, Comparison, and Directory Update

1. Repeat the mapping procedure until every included load is assigned or marked unresolved. Confirm the floor-plan worksheet has no blank entries before continuing.
2. Compare actual loads with the existing panel directory. Record every discrepancy found.
3. Prepare a concise, location-specific circuit description for each mapped breaker. Use room and fixture names rather than vague descriptions.
4. Replace or update the directory using durable, legible labeling without covering required equipment markings. Confirm every required panel marking remains visible after labeling.

J. Closeout Documentation and Restoration

1. Prepare a room-by-room circuit map and unresolved-condition list. Complete this as a standalone document referencing the floor-plan worksheet.
2. Restore all intended circuits and verify critical loads. Confirm every critical load identified in Step 3 is operating normally before ending the session.
3. Document test dates, tester type, directory changes, and conditions requiring electrician review. Complete every field before the project is considered closed.