Lighting Measurements – An In-depth Guide Part 1
When retrofitting your LEDs, lightbulbs have various illuminance. Theres different ways to measure the lighting of…
Commercial properties can reduce holiday decorating electrical hazards by inspecting equipment, verifying circuit capacity, protecting outdoor connections, and confirming local installation requirements before displays go live.
As shopping centers, hotels, office buildings, and retail properties prepare for the holiday season, temporary lighting adds electrical demand and wiring to busy public spaces. A coordinated safety review helps protect employees, tenants, and visitors while reducing outages and emergency repairs.
Key Takeaways
- Inspect lights, extension cords, plugs, and display motors before installation, and remove damaged equipment from service.
- Supply outdoor displays through GFCI-protected circuits and use appropriately rated equipment and extra-duty while-in-use covers where required.
- For standard circuits supplying continuous loads, plan around a maximum of 12 amperes on a 15-ampere circuit or 16 amperes on a 20-ampere circuit.
- Confirm permits and inspections with the local authority before modifying circuits or installing temporary power distribution.
- Schedule removal within the applicable 90-day limit for temporary holiday lighting.
What Should Facility Managers Inspect Before Installing Holiday Lighting?
Check for:
- Cracked insulation, exposed conductors, and crushed cords.
- Broken sockets, loose connections, and missing grounding pins.
- Scorch marks, melted plastic, and corrosion.
- Damaged motor housings or power cords on inflatable displays.
- Missing labels identifying electrical ratings and permitted uses.
OSHA 29 CFR 1910.303 addresses equipment safety and installation according to listing instructions. OSHA 29 CFR 1910.334 specifically addresses visual inspections of portable electrical equipment and removing damaged items from service.
Separate defective equipment from usable inventory. Wrapping damaged insulation with tape does not make a cord safe. Assign responsibility for checking operating displays, especially after storms, maintenance activities, or accidental contact.
How Should Commercial Properties Power Outdoor Holiday Displays?
Commercial outdoor holiday displays should use GFCI-protected power sources, outdoor-rated equipment, and weatherproof connections suitable for the installation.
A ground-fault circuit interrupter, or GFCI, disconnects power when it detects current escaping its intended path, helping reduce electric shock risk. Protection may be provided by a receptacle or circuit breaker.
Test devices before use and follow the manufacturer’s instructions. Stop using any circuit with repeated GFCI trips until a qualified electrician identifies the cause.
For applicable receptacles in wet locations, use NEC-compliant extra-duty while-in-use covers that maintain weather protection with plugs inserted, consistent with NEC Section 406.9(B)(1). A standard flip cover may not provide that protection.
Dedicated circuits may benefit larger displays, but they aren’t required for every holiday installation. An electrician should determine whether existing circuits provide adequate capacity and protection.
How Can Property Managers Prevent Overloaded Circuits?
Property managers should calculate total circuit demand and apply continuous-load requirements before connecting holiday displays.
Under NEC Section 210.20(A), standard branch-circuit overcurrent protection generally must accommodate 125% of the continuous load plus any noncontinuous load. A continuous load is one whose maximum current is expected to continue for three hours or more.
For circuits supplying only continuous loads, this produces the familiar 80% planning limit:
| Circuit rating | Maximum continuous load | Equivalent power at 120 volts* |
| 15 amperes | 12 amperes | 1,440 watts |
| 20 amperes | 16 amperes | 1,920 watts |
Power figures assume a power factor of 1. Use equipment nameplate amperes for actual planning.
Continuous-load limit = Circuit amperage × 0.80
These limits include all continuous equipment sharing the circuit, not just decorations. Mixed loads, motors, and equipment ratings require further evaluation.
Follow manufacturer limits for connected light strings. Do not connect extension cords or route them under rugs, through pinching doors, or across unprotected customer walkways.
When Are Electrical Inspections Required for Holiday Decorations?
Electrical inspection requirements depend on local rules, the scope of the installation, and the authority having jurisdiction.
Contact the local building or electrical department before adding receptacles, modifying circuits, installing hardwired decorations, or arranging substantial temporary power distribution.
NEC Article 590, Temporary Installations, addresses temporary holiday wiring and its 90-day limit. OSHA 29 also permits temporary electrical installations for Christmas decorative lighting and similar purposes for no more than 90 days in covered workplaces.
The duration limit does not waive permits or inspections. Confirm the locally adopted NEC edition and amendments rather than assuming the newest published edition applies.
Year-round string lighting requires evaluation as a permanent installation. Seasonal equipment is not suitable for permanent use simply because it remains installed.
Frequently Asked Questions
Commercial holiday decorating policies should also address LED equipment, tenant approvals, and unattended operation.
Do LED Holiday Lights Eliminate Electrical Fire Hazards?
No. Lower electricity use does not eliminate hazards from damaged cords, overloaded connections, unsuitable equipment, or improper installation.
Can Tenants Install Their Own Holiday Displays?
Only with management approval under the property’s decorating policy. Management must review power sources, installation methods, operating schedules, and removal dates to coordinate tenant displays on shared circuits.
Can Commercial Holiday Displays Operate After Business Hours?
Only when equipment instructions and site conditions support unattended operation. Use appropriately rated timers or controls, set shutdown schedules, and assign someone to check operation.
Schedule a Pre-Holiday Electrical Safety Review
A pre-holiday electrical safety inspection can identify damaged receptacles, inadequate protection, and insufficient circuit capacity before displays open to the public.
Contact Action Services Group to coordinate a commercial electrical safety review and plan necessary repairs, GFCI protection, and temporary circuit infrastructure. Addressing these needs before installation helps reduce shock hazards, circuit interruptions, and last-minute service calls.
Click here for a full review published by the National Fire Protection Association.
