DA Form 7452-1-R: Ground Fault Protection Checklist PDF

DA Form 7452-1-R: Ground Fault Protection Checklist PDF – If you work on US Army construction projects, DoD facility upgrades, or electrical contracting for military bases, you’ve likely encountered DA Form 7452-1-R. This critical checklist ensures proper installation of the Ground Fault Protection Subsystem in new C4ISR (Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance) facilities across the United States.

In this comprehensive guide, we break down exactly what DA Form 7452-1-R is, why it matters for electrical safety and mission readiness, how to complete it step-by-step, and where to download the latest official PDF directly from Army Publications.

What Is DA Form 7452-1-R?

DA Form 7452-1-R (FEB 2002) is the official Ground Fault Protection Subsystem Checklist for New Facilities (LRA). Issued by the US Army Corps of Engineers (COE), it is used specifically during the construction and acceptance phase of new facilities to verify that the electrical grounding and fault-protection system meets rigorous safety and performance standards.

  • Full Title: Ground Fault Protection Subsystem Checklist for New Facilities
  • For use with: TM 5-690 – Grounding and Bonding in Command, Control, Communications, Computer, Intelligence, Surveillance, and Reconnaissance (C4ISR) Facilities (15 February 2002)
  • Proponent: US Army Corps of Engineers (COE)

This form is part of a complete series of DA Forms 7452 (new facilities) and 7452-4-R through 7452-9-R (existing facilities) that document every major grounding subsystem.

Why Ground Fault Protection Matters in US Army Facilities?

The Ground Fault Protection Subsystem (also called the Fault Protection Subsystem) is one of the four core elements of a facility grounding system (alongside Earth Electrode, Lightning Protection, and Signal Reference subsystems). Its two primary goals are:

  1. Protect personnel from electric shock by providing a low-impedance path for fault currents.
  2. Ensure rapid clearance of faults to minimize fire hazards and equipment damage.

In C4ISR facilities — from radar sites and command centers to air traffic control towers on bases like Fort Liberty, Joint Base Lewis-McChord, or Fort Cavazos — a properly installed system prevents hazardous step-and-touch voltages, protects sensitive electronics from EMI, and supports uninterrupted mission operations.

Key requirements align with the National Electrical Code (NEC NFPA 70) Article 250 and MIL-STD-188-124B. The form verifies that:

  • Dedicated equipment grounding conductors (“green wires”) are correctly installed and bonded.
  • Neutrals are grounded only at the service disconnect (for non-separately derived systems).
  • Bonds maintain very low resistance (typically ≤ 1 milliohm or 5 milliohms maximum).
  • The subsystem connects properly to the Earth Electrode Subsystem.

Failing to meet these standards can lead to equipment failure, personnel injury, or non-compliance during Army Corps of Engineers inspections.

Key Sections of DA Form 7452-1-R Checklist

The one-page, fillable form is straightforward and designed for field use by inspectors and electricians. Here’s what it requires:

  1. Header Information
    • Facility name
    • Date (YYYYMMDD)
    • Location
    • Inspector name
  2. Sketch the Layout (or attach updated engineering drawing)
    • Must show all grounded (neutral) and grounding (green) circuits from main inputs feeding the facility all the way to load circuits.
  3. Check All Grounded Circuits
    • Proper installation, continuity, correct types, sizes, and materials per specifications.
    • Record all deficiencies by location.
  4. Inspect Ground Fault Protection Components/Devices
    • Look for overheating, burning, rodent damage, water infiltration, environmental contaminants, or insulation damage.
    • Record any issues by location.
  5. Record Connections to Earth Electrode Subsystem
    • Document locations and conductor sizes.
  6. Measure & Record Neutral and Ground Currents at all panel boards.
    • Record readings and any notes (e.g., excessive ground current indicates problems).

The form emphasizes visual inspection, continuity testing, and documentation of any deviations before the facility is accepted.

Step-by-Step: How to Complete DA Form 7452-1-R?

  1. Obtain the latest PDF from the official Army source (link below).
  2. During final construction walkthrough, sketch or update the subsystem layout.
  3. Perform continuity and visual checks on every grounded and grounding conductor.
  4. Inspect all devices and enclosures for damage.
  5. Verify and document connections to the Earth Electrode Subsystem.
  6. Use a clamp meter or multimeter to measure neutral (I_N) and ground (I_G) currents at panels.
  7. Note all deficiencies clearly.
  8. Sign and attach to project records / as-built drawings.

Completed forms become part of the permanent facility maintenance records.

Download DA Form 7452-1-R PDF (Official & Free)

Direct official download (current version, FEB 2002):
Download DA Form 7452-1-R PDF

Also available in XFDL format on armypubs.army.mil. Always use the version hosted on the official Army Publications site for compliance.

Related forms you may need:

  • DA Form 7452-R – Earth Ground Electrode Subsystem Checklist (New)
  • DA Form 7452-7-R – Ground Fault Protection Checklist (Existing Facilities)
  • TM 5-690 (full manual available on WBDG.org)
  • NEC NFPA 70 (latest edition adopted by DoD)
  • NFPA 780 (Lightning Protection)
  • US Army Corps of Engineers construction specifications

Contractors working on Army projects should reference the latest Unified Facilities Criteria (UFC) documents that incorporate these grounding requirements.

Frequently Asked Questions (FAQs)

Is DA Form 7452-1-R still current in 2026?
Yes. No superseding form has been issued; it remains the referenced checklist in TM 5-690 and Army publications.

Who must use this form?
Electrical inspectors, prime contractors, and USACE quality assurance personnel on new C4ISR or similar facility projects.

What does (LRA) mean?
It indicates the form is “Locally Reproducible Authorized” — standard notation for Army forms designed to be filled out and reproduced locally.

Do I need special training?
Familiarity with NEC Article 250 and TM 5-690 is recommended. Many Army installations provide training through the Corps of Engineers.

Final Thoughts

Proper completion of DA Form 7452-1-R is not just paperwork — it’s a critical safeguard for personnel safety, equipment reliability, and mission success at US military installations nationwide. By ensuring your Ground Fault Protection Subsystem meets Army standards from day one, you help prevent costly rework and keep facilities operational and safe.

Bookmark this guide and download the form today:
Official DA Form 7452-1-R PDF

Need help with related checklists or TM 5-690 interpretation? Leave a comment or contact your local USACE district office.