Elevator shunt-trip and fire-alarm relay records before elevator inspection

Direct answer

Before an elevator inspection, the shunt-trip breaker and fire alarm relay record should identify the project, permit, elevator ID, machine room or control space, elevator controller, sprinkler condition that drives the sequence, approved drawing or matrix, shunt-trip breaker or elevator disconnect, panel and circuit source, shunt coil voltage, shunt control-power source, fire alarm relay or control module address, initiating device that commands the trip, detector location, waterflow or heat detector basis where applicable, supervisory monitor point for shunt control voltage, auxiliary contact used for battery lowering or alternate power where provided, test method approved for the inspection, trip result, reset result, fire alarm panel event log, elevator controller status, failed condition, correction, retest, witness, and release boundary.

The record should show the chain, not just the final trip. A fire alarm relay changing state does not prove the shunt coil had power. A breaker handle in the tripped position does not prove the correct detector initiated the sequence. A detector test does not prove the auxiliary contact opened the battery-lowering path where that feature exists. The inspection packet should connect input, output, controlled power, supervision, elevator response, and reset evidence.

Do not invent a universal shunt-trip arrangement. Whether shunt trip is required, which initiating device controls it, whether a heat detector, waterflow switch, or other approved input is used, how delay is handled, whether auxiliary battery lowering is present, and what the inspector must witness are controlled by the adopted code edition, ASME A17.1/CSA B44 basis, NFPA 72 basis, NFPA 13 basis, NEC basis, local amendments, AHJ direction, approved drawings, elevator contractor, fire alarm contractor, electrical contractor, manufacturer instructions, and site safety plan.

Why this record matters

Elevator inspection often brings several scopes into one room: elevator controls, electrical power, fire alarm outputs, sprinkler-related initiating devices, standby or battery lowering, monitoring, labels, and reset coordination. If the test record only says shunt trip passed, no one can tell which device initiated the trip, which relay operated, whether shunt control power was supervised, whether the correct elevator lost power, or whether a failed attempt was repaired and retested.

The inspection packet is meant to prevent that ambiguity. It lets the elevator inspector, fire marshal, fire alarm technician, elevator mechanic, electrical contractor, owner, and general contractor see the same sequence. It also gives the team a clean reason to hold inspection if the fire alarm point label is wrong, the relay address does not match the matrix, the control-voltage monitor is not reporting, the breaker trips the wrong equipment, or the battery-lowering auxiliary contact is not documented.

This article is not a design sequence for elevator shutdown. It is a field record for the evidence that should be available before representing the shunt-trip and fire alarm interface as ready for inspection.

Start with the approved basis

Start the record by naming the documents that control the inspection. Include the elevator permit, approved elevator drawings, fire alarm shop drawings, input/output matrix, sprinkler drawings where relevant, electrical panel schedule, one-line diagram, elevator controller submittal, shunt-trip breaker or elevator disconnect submittal, local pre-inspection checklist, and the adopted code basis shown on the project documents.

ASME describes A17.1/CSA B44 as a safety code used for design, construction, installation, operation, inspection, testing, maintenance, alteration, and repair of elevators and related conveyances. NFPA 72 covers fire alarm and signaling systems, and NFPA public guidance describes fire alarm emergency control functions such as elevator recall and shutdown. Those standards matter, but the field record should point to the adopted edition and approved drawings, not interpret the code from memory.

If the inspector or AHJ uses a local checklist, keep it with the packet. Phoenix, Nevada, Oregon, and Ohio public documents all show how local elevator inspection and shunt-trip expectations can be stated differently. That is the practical lesson: the release packet must match the jurisdiction and approved project documents.

Identify the equipment

Record the elevator number, car designation, machine room or control space, controller tag, mainline disconnect or shunt-trip breaker tag, panel and circuit, voltage, phase, overcurrent device, shunt coil voltage, control transformer or control source, fire alarm relay or control module address, monitor module address, initiating devices, and any auxiliary contact used for battery lowering, alternate power, or a related elevator control input.

Use equipment labels exactly as they appear on the approved drawings and installed devices. If the fire alarm panel says Elevator Shunt Trip 1 but the elevator inspection form says Car 2 Mainline Disconnect, the team needs to reconcile the labels before the witness test. A mismatch in labels can make a correct physical trip look like the wrong event or make the wrong trip look acceptable.

For multi-car groups, identify whether the sequence applies to one car, one hoistway, one machine room, one controller, or a bank of elevators. Do not let a successful trip on one elevator stand in for every elevator unless the approved inspection scope says so.

Separate input, relay, trip, and proof

The record should keep four ideas separate. The input is the initiating device or approved signal that starts the sequence. The fire alarm output is the relay, control module, or circuit that changes state. The controlled device is the shunt-trip breaker or disconnect that removes elevator power. The proof is the observed breaker position, loss of power, elevator controller status, fire alarm panel event, supervisory point, or other accepted evidence.

NFPA emergency-control guidance describes the fire alarm control unit using relays or addressable output modules to control other systems, including elevator recall or shutdown. That is the control concept. The field record still has to prove the installed path: correct input, correct output, correct controlled breaker, and correct return to normal after reset.

This separation prevents common mistakes. A relay LED can turn on while the breaker never trips. A breaker can trip from a manual test switch while the fire alarm relay is miswired. A smoke detector can recall the elevator while the shunt trip is supposed to be driven by a different device. A monitor point can stay normal even though control voltage is missing if it is not wired to the right source.

Record the initiating devices

List each initiating device that is part of the inspection sequence. Typical fields include elevator lobby smoke detector, machine room smoke detector, hoistway smoke detector where required, heat detector near a sprinkler where applicable, waterflow switch where applicable, sprinkler zone, device address, device label, tested input, expected output, and actual fire alarm panel event.

NFPA public guidance explains that elevator recall and shutdown can be tied to fire alarm initiating conditions, and Ohio's public shunt-trip decision flowchart points readers back to NFPA 72, NFPA 13, and A17.1/B44 for detector and sprinkler decisions. Phoenix and Nevada checklists also call out fire alarm initiating devices and pretesting. Use those sources as context, then follow the actual approved matrix for the project.

Do not treat smoke detector, heat detector, and waterflow inputs as interchangeable. Their placement, purpose, response, and output sequence can differ. If a local checklist or AHJ requires a particular wording for fire alarm point descriptions, record the exact language used at the panel and monitoring station.

Supervise shunt control power

A shunt-trip circuit can be present but unavailable if the control-voltage source is off, fused open, disconnected, or not monitored. The release record should identify the shunt control-voltage source, transformer or circuit where applicable, supervisory monitor point, normal status, trouble or supervisory response when power is removed under the approved test, and restoration result.

Oregon's public interpretation of shunt-trip control-voltage monitoring explains the practical point: control circuits used to shut down elevator power need monitoring for presence of operating voltage, and loss of that voltage should show as a supervisory signal at the fire alarm control unit or required annunciator. Phoenix's checklist also states shunt power must be monitored for power loss by a fire alarm supervisory signal.

Do not clear the inspection packet if the team cannot prove the monitor point. A shunt relay test without supervision evidence leaves a hidden failure mode: the system may appear ready while the control voltage needed to trip the breaker is not available.

Auxiliary contacts need their own line

If the elevator has battery lowering, standby power, door operation, or another auxiliary source tied to the mainline disconnect position, document the auxiliary contact separately from the shunt-trip coil. Record whether the auxiliary contact exists, what it is intended to disable or signal, whether it is normally open or normally closed as installed, what terminals or drawing reference identify it, and how its change of state was verified.

Phoenix's pre-inspection checklist gives a clear example of the field issue: it calls for the shunt breaker to have an auxiliary contact to disable battery lowering, if provided, when the mainline disconnect is shunted off or turned off. Nevada's checklist similarly lists battery-lowering auxiliary contact as an inspection item. Those examples do not create a universal wiring method, but they show why the contact should not disappear into a generic pass note.

When the auxiliary contact is not applicable, write not applicable and explain why. That may be because the elevator type, controller, battery-lowering arrangement, or approved design does not use it. Leaving the line blank creates an avoidable inspection question.

Test evidence should show reset

The inspection record should show both the trip and the restoration path. Record the starting condition, test input, fire alarm event, relay or module operation, breaker trip, elevator controller status, auxiliary contact result, supervisory signal result, reset sequence, fire alarm panel reset, breaker reset, elevator return-to-normal status, and any follow-up test needed after reset.

If the test is performed using a key switch, test switch, simulated input, live detector test, or other approved method, say so. The packet should identify who approved that method for the witness and what was not proven by it. For example, a local test switch may prove the disconnect mechanism but may not prove the fire alarm relay path unless the approved procedure includes both.

Keep failed attempts. A first trip that failed because the fire alarm relay was assigned to the wrong module, a fuse was open, the shunt coil voltage was absent, or the breaker served the wrong elevator is important evidence. The correction and retest should be visible.

Use an auditable table

Use the AHJ form, elevator contractor checklist, fire alarm acceptance form, or commissioning script first. Add a table only where the required forms do not make the shunt-trip sequence easy to audit.

Build a photo packet

Photos should identify the installed equipment and the test state. Capture the elevator controller tag, machine room sign or location, shunt-trip breaker or disconnect label, panel schedule, circuit label, fire alarm relay or module label, initiating device label, fire alarm panel event, annunciator event where relevant, supervisory point, auxiliary contact drawing or terminal reference where visible and allowed, breaker tripped position, reset state, and corrected labels.

Do not photograph inside energized equipment unless the site procedure and qualified persons allow it. A clear exterior label photo plus approved drawing reference is often safer and more useful than an unsafe interior photo.

Pair photos with a log. A photo of a breaker in trip position needs elevator ID, time, initiating device, relay/module, witness, and reset status. Otherwise the photo proves only that a breaker was tripped at some point.

Retests need their own evidence

A retest should not overwrite the failed attempt. Keep the original input, expected output, actual result, failure reason, correction, approving person, retest method, retest result, and final decision.

Common retest triggers include wrong fire alarm point description, wrong relay address, inactive output programming, missing supervisory point, shunt control power absent, blown control fuse, wrong breaker, elevator controller not ready, auxiliary contact not proven, detector not installed or not tested, and reset sequence not accepted.

If the team postpones part of the test, write the boundary. Released for elevator mechanic pretest is different from released for AHJ inspection. Released for fire alarm programming check is different from released for power shutdown witness. Released for one car is different from released for the elevator bank.

Before elevator inspection checklist

Run this check before representing the shunt-trip breaker, auxiliary contact, and fire alarm relay as ready for elevator inspection.

• Confirm elevator ID, machine room or control space, controller, permit, approved drawings, fire alarm matrix, AHJ checklist, and inspection scope.
• Record shunt-trip breaker or disconnect tag, panel/circuit, shunt coil voltage, control power source, reset method, and equipment label.
• Record fire alarm relay or control module address, output programming, contact action, panel label, and expected sequence.
• List initiating devices that control recall or shunt trip: smoke, heat, waterflow, sprinkler zone, location, address, tested input, and expected output.
• Verify shunt control-voltage supervision: monitor point, normal state, loss-of-power supervisory response under approved test, annunciator or panel event, and restoration.
• Document auxiliary contact status for battery lowering or alternate power where provided, including drawing reference, contact state, test result, or not-applicable reason.
• Capture labeled photos of elevator controller, shunt device, fire alarm module, initiating devices, panel events, supervisory points, tripped state, reset state, and corrected labels.
• Record witnesses: elevator mechanic, fire alarm technician, electrical contractor, inspector, fire marshal, owner, or commissioning agent as required by the inspection scope.
• Write failed attempts, corrections, retests, bypasses, impairments, fire watch, disabled points, pending programming, and open AHJ comments.
• State the release decision: ready for elevator inspection, ready for limited pretest only, released with condition, held for correction, retest required, or not applicable by approved basis.

Weak and strong records

Weak note: Elevator shunt trip tested OK.

That note does not identify the elevator, breaker, fire alarm relay, initiating device, control-voltage supervision, auxiliary contact, panel event, reset result, witness, failed attempts, or release boundary.

Stronger note: Elevator E-2 shunt-trip pretest completed for the east machine room under approved elevator sheet ELEV-4, fire alarm matrix FA-IO-2 revision 5, and Phoenix elevator pre-inspection checklist item sequence. Mainline disconnect E2-DISC is fed from MDP circuit 4E. Fire alarm output module FAM-2-147 is labeled Elevator E-2 Shunt Trip. Initiating devices checked for this sequence were machine room heat detector HD-E2-MR and hoistway heat detector HD-E2-HW per approved matrix. Fire alarm technician activated the approved test input at 09:14. FACP event log shows HD-E2-MR alarm, output FAM-2-147 active, and supervisory monitor STS-E2 normal before trip.

E2-DISC tripped open, elevator controller showed power removed, and auxiliary contact AC-E2 changed state to disable the battery-lowering circuit as shown on elevator controller detail EC-7. Control-voltage monitor point STS-E2 was tested by the approved loss-of-power step and reported supervisory at the FACP and remote annunciator, then restored normal after reset. Breaker was reset, fire alarm panel was reset, elevator mechanic returned E-2 to normal inspection-ready status, and the final event log is attached. First attempt at 08:42 failed because FAM-2-147 point label said Elevator E-1. Label corrected, retested, and accepted by elevator mechanic, fire alarm technician, electrical foreman, and inspector. Released for E-2 elevator inspection only. E-1 and E-3 remain pending.

The stronger note works because it keeps the equipment IDs, input, relay, trip proof, supervision, auxiliary contact, reset, failure, correction, retest, witnesses, and release boundary visible.

Common mistakes

The first mistake is treating relay operation as proof of power shutdown. The record needs the relay action and the shunt-trip breaker result.

The second mistake is skipping shunt control-voltage supervision. If control voltage is lost and no supervisory signal appears, the system can look ready while the trip path is disabled.

The third mistake is leaving the auxiliary contact blank. If battery lowering or alternate power is part of the installation, the contact behavior needs its own evidence. If it is not applicable, say why.

The fourth mistake is confusing elevator recall with elevator shutdown. Recall, visual signals, shutdown, shunt trip, fire service operation, and reset can be separate items in the accepted sequence.

The fifth mistake is testing the wrong input. A smoke detector may prove recall while a heat detector or waterflow input controls shunt trip where that is the approved sequence.

The sixth mistake is clearing the inspection after a retest but deleting the failed attempt. Inspectors and owners need to see the correction chain.

Questions that come up

Does every elevator need shunt trip? No. Use the adopted code, sprinkler condition, ASME A17.1/CSA B44 basis, NFPA 72/NFPA 13 basis, NEC basis, local amendments, approved drawings, and AHJ direction. The field record should not create the requirement.

Can a test switch replace a detector test? Only if the approved procedure and inspector accept it for the specific purpose. A local switch may prove part of the disconnect, but it may not prove the fire alarm input, relay programming, or monitoring path unless the test covers those parts.

Should the fire alarm panel label matter? Yes. Local checklists often care about device descriptions, and wrong labels can lead responders, inspectors, or technicians to the wrong elevator or device.

What if there is no battery lowering? Mark the auxiliary contact field not applicable and cite the approved design basis or elevator contractor confirmation. Do not leave it blank.

Who should sign the packet? Follow the contract and AHJ. Signers may include the elevator mechanic, fire alarm technician, electrical contractor, elevator inspector, fire marshal, commissioning agent, owner representative, and general contractor depending on the witness scope.

Compliance and safety limits

This field note is not an elevator design, fire alarm design, sprinkler design, NEC interpretation, NFPA interpretation, ASME interpretation, AHJ ruling, elevator inspection approval, fire alarm acceptance test, energized-work permit, lockout/tagout procedure, impairment plan, fire watch plan, or manufacturer instruction. The adopted code, approved drawings, AHJ, elevator inspector, fire marshal, engineer, elevator contractor, fire alarm contractor, electrical contractor, owner, manufacturer instructions, and site safety plan control the work.

Do not use this checklist to bypass lockout/tagout, elevator mechanic control, fire alarm impairment procedures, sprinkler impairment procedures, occupant notification, emergency responder coordination, energized-work controls, arc-flash boundaries, PPE, testing with passengers present, machine-room access rules, reset authorization, monitoring notifications, or qualified-person requirements. The record preserves inspection readiness evidence. It does not authorize unsafe testing or final elevator approval.

Sources checked

• NFPA, NFPA 72 Standard DevelopmentUsed for official NFPA 72 identity and fire alarm and signaling system scope context.
• NFPA, A Guide to Fire Alarm Basics: Emergency Control FunctionsUsed for public NFPA context on fire alarm relays, control modules, elevator recall, elevator shutdown, shunt trip, and the importance of input/output matrices and integrated-system testing.
• NFPA, When Are Sprinklers Required in Elevator Shafts and Machine Rooms?Used for public NFPA context on elevator hoistway, pit, and machine-room sprinkler decisions, ASME A17.1 interaction, and the need for arrangements such as shunt trip where power shutdown before water discharge is required.
• ASME, A17.1 Safety Code for Elevators and EscalatorsUsed for official ASME context that A17.1/CSA B44 covers design, construction, installation, operation, inspection, testing, maintenance, alteration, and repair of elevators and related conveyances.
• City of Phoenix, New Elevator Installation or Alteration Pre-Inspection ChecklistUsed for official AHJ checklist examples covering smoke and heat detectors, shunt-trip breaker conditions, auxiliary contact for battery lowering, shunt power supervisory monitoring, pretesting, device descriptions, and monitoring labels.
• Nevada DIR, Elevator Pre-Inspection ChecklistUsed for official state checklist examples covering shunt trip where sprinkled, fire alarm initiating devices, battery-lowering auxiliary contact, fire recall testing, heat detector testing, and ready-for-inspection signoff.
• Oregon Building Codes Division, Shunt Trip Control Voltage MonitoringUsed for official interpretation context on monitoring elevator shunt-trip control voltage and reporting loss of voltage as a supervisory signal at the control unit or annunciator.
• Ohio Department of Commerce, Smoke/Heat Detectors and Shunt-Trip Decision Making FlowchartUsed for official detector and sprinkler decision context tying elevator shunt-trip questions to NFPA 72, NFPA 13, and ASME A17.1/CSA B44 references.
• OSHA, 29 CFR 1910.147 The Control of Hazardous EnergyUsed for safety-boundary context around hazardous-energy controls, lockout/tagout, testing, and reset limits.

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