Low Voltage Switchgear Maintenance Checklist
A maintenance checklist for LV switchgear and main switchboards covering thermographic surveys, circuit breaker testing, busbar inspection, and protection device verification for commercial buildings.
What is a lv switchgear maintenance checklist?
A low voltage switchgear maintenance checklist is a structured list of the 10 preventive maintenance tasks — covering visual, functional, safety and record-keeping checks — that keep a low voltage switchgear running safely and reliably. It groups routine checks by frequency, from daily inspections to annual servicing, so FM teams and building engineers can plan and evidence preventive maintenance.
Core lv switchgear checks
- Visual inspection for signs of overheating, arcing, or damage
- Perform thermographic survey of all panels and connections
- Check earth bonding connections
- Record load readings on main incomer and major outgoing circuits
What is a low voltage switchgear?
Low voltage switchgear distributes electrical power from the transformer or main intake throughout the building at 400/230V. It includes the main LV switchboard, moulded case circuit breakers (MCCBs), air circuit breakers (ACBs), busbars, and metering equipment. LV switchgear is the heart of the building's electrical distribution and requires regular maintenance to ensure safety and reliability.
This checklist is one of 16 in our electrical maintenance checklists, covering distribution boards, switchgear, generators, UPS, solar PV and EV charging — inspection, testing and thermographic checks.
Typical LV switchgear maintenance checklist
A practical starting point for planned preventive maintenance. Always refer to the manufacturer's O&M manual and site-specific requirements.
Visual Checks
- Visual inspection for signs of overheating, arcing, or damage
- Check panel ventilation and cooling fans are operational
- Check all labels and circuit schedules are accurate and legible
- Inspect cable entries and glands for condition and tightness
Functional Checks
- Perform thermographic survey of all panels and connections
- Verify RCD and RCBO devices trip within specified time using test button
Safety Checks
- Check earth bonding connections
- Verify the switchroom is clean, dry, and free of stored materials
Record Keeping
- Record load readings on main incomer and major outgoing circuits
- Review the latest periodic electrical inspection report (EICR)
Download the free LV switchgear maintenance checklist PDF
Get all 10 tasks as a printable PDF — free, no signup needed. Keep a copy in the plant room, attach it to work orders, or share it with your maintenance contractor.
Typical maintenance frequency
Suggested intervals for low voltage switchgear maintenance. Actual frequencies should follow manufacturer guidance and site-specific risk assessments.
Annually
- •Thermographic survey
- •Visual inspection
- •Load recording
- •RCD testing
- •Switchroom housekeeping check
Every 6 Months
- •Circuit breaker servicing (on shutdown)
- •Busbar connection torque checks
- •Insulation resistance testing
- •Protection coordination review
Common faults and issues
Issues to be aware of when maintaining low voltage switchgear equipment.
Safety and compliance notes
Key safety considerations for low voltage switchgear maintenance. This is general guidance only — always follow OEM instructions, statutory requirements, and your organisation's safe systems of work.
Reference standards and frameworks
- United Kingdom
- BS 7671 (IET Wiring Regulations) and the Electricity at Work Regulations 1989
- North America
- NFPA 70B (electrical equipment maintenance) and ANSI/NETA MTS
Frameworks commonly referenced when planning lv switchgear maintenance programmes. Always confirm the requirements that apply to your site and jurisdiction.
Managing LV switchgear documentation with PM Assist
PM Assist helps FM and building operations teams search their O&M manuals and building drawings in seconds. Upload your low voltage switchgear documentation and ask questions like “When was the last inspection carried out?” or “What are the rated specifications?” — and get source-cited answers instantly.
See PM Assist answer questions about a real lv switchgear manual — try the live demo, no signup needed.
Take this checklist with you
Download the branded PDF, generate a custom version for your asset, or run AI search across all your building documentation.
Related free tools
Inspection checklists for this asset
Maintenance keeps the asset working; a statutory inspection records whether it currently passes. Both usually apply.
Further reading on lv switchgear maintenance
Compliance topics for lv switchgear maintenance
Frequently asked questions
How often should LV switchgear be inspected?
What is an EICR?
Why is thermography important for switchgear?
Manage your building documentation with AI
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- Upload and organise building documentation
- AI-powered search across all your manuals
- Source-cited answers for maintenance queries
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