Temporary electrical service is commonly used for construction trailers, job-site offices, temporary living trailers, and remodel projects where permanent power is not yet available.
While it’s called “temporary,” this type of service must still meet strict electrical codes to ensure safety, reliability, and inspection approval.
At Smiley Electric, we install temporary electrical services for trailers throughout Portland, Beaverton, Hillsboro, and surrounding areas, helping homeowners and contractors stay powered and compliant.
What Is Temporary Electrical Service?
Temporary electrical service provides power before a permanent electrical system is installed.
It typically includes:
- A temporary service pole or pedestal
- Meter base and main disconnect
- Breaker panel for branch circuits
- Receptacles for trailer or equipment connection
Temporary services are commonly used during:
- New home construction
- Major remodels
- ADU builds
- Job-site trailers
- Temporary housing situations
Why Trailers Need a Dedicated Temporary Service
Trailers often power:
- Lighting and HVAC
- Tools and equipment
- Refrigeration or appliances
- Office electronics
Using extension cords or makeshift power sources is unsafe and often illegal. A properly installed temporary service ensures:
- Adequate power capacity
- Ground-fault protection
- Safe disconnection
- Code compliance
Typical Power Requirements for Trailers
Most trailer setups use:
- 100A or 200A temporary service
- 120/240V single-phase power
- GFCI-protected receptacles
The exact setup depends on:
- Trailer size
- Equipment load
- Utility requirements (PGE or Pacific Power)
- City or county regulations
Smiley Electric performs load calculations to ensure the service is sized correctly.
What’s Included in a Temporary Trailer Service Installation
A standard temporary service installation may include:
- Temporary service pole or pedestal
- Meter socket installation
- Main disconnect or breaker panel
- Ground rods and grounding system
- Weatherproof outlets
- Utility coordination and inspections
All work is completed to NEC and Oregon Electrical Specialty Code standards.
Common Mistakes With Temporary Power
We often see issues like:
- Improper grounding
- Undersized conductors
- Missing GFCI protection
- Unsafe cord connections
- No permits or inspections
These mistakes can lead to:
- Failed inspections
- Utility refusal to energize service
- Safety hazards
- Project delays
Professional installation avoids these problems.
Temporary Service for Construction & Remodel Projects
Temporary power is frequently required for:
- Home builds before final service
- Remodels when the main panel is offline
- ADU construction
- Contractor job-site trailers
Once construction is complete, temporary service can often be converted or removed as part of the permanent electrical installation.
Permits, Inspections & Utility Coordination
Temporary services still require:
- Electrical permits
- Utility approval
- Rough and final inspections
Smiley Electric handles:
- Permit applications
- Utility coordination
- Inspection scheduling
So your project stays on track.
Cost of Temporary Electrical Service for a Trailer
Pricing varies based on location and service size.
Typical Range
- Temporary service installation: $2,000–$4,500+
- Depends on utility requirements, grounding, and distance
We provide upfront pricing before work begins.
Why Hire a Licensed Electrician for Temporary Power
Even temporary electrical systems must be:
- Safe
- Code-compliant
- Properly grounded
- Utility-approved
Hiring a licensed electrician protects your project, workers, and property.
Temporary Electrical Service You Can Rely On
Smiley Electric specializes in:
- Temporary power for trailers
- Construction and job-site electrical service
- Meter and service installations
- Permanent service conversions
We proudly serve Portland, Beaverton, Hillsboro, Tigard, Lake Oswego, and nearby Oregon communities.
👉 Contact Smiley Electric today to schedule temporary electrical service for your trailer or job site.