Arc Flash Study & NFPA 70E Compliance
San Bernardino County, CA Industrial Facilities
San Bernardino County is the largest county by area in the contiguous United States — and one of California's most industrially active. From the western Inland Empire logistics hub (Ontario, Fontana, Rancho Cucamonga) to the steel and cement operations in the valley floor, and the growing High Desert distribution corridor (Victorville, Hesperia), facilities throughout San Bernardino County run complex electrical systems requiring current NFPA 70E arc flash compliance. Direct Source delivers complete arc flash studies — field data collection, IEEE 1584 calculations, and labels printed and installed.
Call (562) 396-9924Get Your Arc Flash Study Quote
Respond within one business day · Serving all of San Bernardino County
Trusted by industry leaders
Direct Source serves Southern California’s top manufacturers
Complete Turnkey Package
What's Included in Our San Bernardino County Arc Flash Study
We deliver a complete, code-aligned NFPA 70E arc flash study — designed for Cal/OSHA compliance, worker safety, and operational uptime across San Bernardino County.
Field Data Collection
Equipment nameplate data, protective device settings, conductor sizes and lengths — gathered on-site at your San Bernardino County facility.
Single-Line Diagram Updates
Create or reconcile your single-line diagram so arc flash modeling, coordination analysis, and labeling accurately reflect your current electrical system.
Short-Circuit & Coordination
Verify available fault currents and coordinate protective devices to minimize incident energy throughout your facility.
IEEE 1584 Calculations
Incident energy levels, arc flash boundaries, and PPE categories calculated per IEEE 1584 methodology for every labeled location.
Arc Flash Labels: Printed & Installed
NFPA 70E-compliant arc flash labels printed and physically installed on the correct equipment with location-matched IDs and incident energy values.
Mitigation & Training
Mitigation recommendations and qualified/unqualified worker training available upon request.
Service Area
San Bernardino County Cities We Serve
We provide NFPA 70E arc flash studies throughout San Bernardino County — from the western Inland Empire logistics corridor to the High Desert.
Don't see your city? We serve all of San Bernardino County — call (562) 396-9924.
What Clients Say
Trusted by City of Industry & Los Angeles County Manufacturers
“We were experiencing electrical and PLC problems at our manufacturing plant and needed help ASAP. Direct Source came in the same day, gave us a very fair estimate, found the problem, and fixed it. We got back up and running with little downtime. These guys know what they're doing.”
“We had an unexpected production issue at our facility in City of Industry and Direct Source responded quickly. Their industrial electrician team diagnosed the problem fast and got us back up and running the same day. Professional and dependable.”
“They were professional and prompt, diagnosed the issue quickly, and fixed it at no charge since it was an easy fix. That type of customer service goes a long way in showing how they operate. They will be our FIRST call for the next electrical need.”
About Our Service Area
Arc Flash Studies Across San Bernardino County
San Bernardino County spans an enormous geographic and industrial range. The western corridor — Ontario, Fontana, Rancho Cucamonga, Chino, Upland, and Montclair — is one of the most logistics-intensive industrial zones in the United States, anchored by Ontario International Airport and the I-10/I-15/I-215 interchange. Fontana is home to California Steel Industries, one of the largest steel processors in the western US. Chino hosts Southern California's dairy and food processing industry.
Moving east into the valley floor, San Bernardino, Rialto, Colton, Redlands, and the Loma Linda healthcare campus form a second industrial and healthcare cluster — including cement and aggregate operations, major rail infrastructure, and the Loma Linda University Health medical complex. Yucaipa and Highland round out the eastern Inland Empire with food processing and agricultural operations.
Further north, Victorville, Hesperia, and Apple Valley anchor the High Desert industrial corridor along the I-15 — one of California's fastest-growing logistics and distribution zones, with significant aggregate, cement, and airport industrial development at Southern California Logistics Airport (SCLA).
Why San Bernardino County Facilities Choose Direct Source
Complete Turnkey ServiceField data collection, IEEE 1584 calculations, single-line updates, and labels printed and installed — one contractor, start to finish.
Cal/OSHA & NFPA 70E ExpertiseWe understand California-specific compliance and deliver studies that satisfy Cal/OSHA Title 8 inspections throughout San Bernardino County.
High Fault-Current ExperienceSteel, cement, and heavy industrial facilities in San Bernardino County run elevated fault currents requiring specialized IEEE 1584 analysis — we have that experience.
C-10 LicensedDirect Source holds a California C-10 Electrical Contractor license — required for label installation on energized electrical equipment.
Get Started
Request Your Arc Flash Study Quote
- We respond within one business day
- Field data collection, IEEE 1584, labels installed
- Serving all of San Bernardino County
- Cal/OSHA compliant · C-10 Licensed
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FAQ
San Bernardino County Arc Flash Study — Common Questions
Do you provide arc flash studies throughout San Bernardino County, CA?
Yes. Direct Source Industrial Solutions provides complete NFPA 70E arc flash studies for industrial facilities throughout San Bernardino County — from Ontario and Fontana in the western Inland Empire to Victorville and Apple Valley in the High Desert. Call (562) 396-9924.
What industries in San Bernardino County need arc flash studies?
Any San Bernardino County facility with electrical equipment at 50V or above requires arc flash risk assessment under NFPA 70E and Cal/OSHA Title 8. This includes logistics and distribution centers, steel and heavy manufacturing, food and dairy processors, healthcare campuses, aggregate and cement producers, and High Desert industrial development.
What does an arc flash study include?
A complete arc flash study includes: on-site field data collection, single-line diagram creation or update, short-circuit and protective device coordination analysis, IEEE 1584 incident energy calculations, arc flash boundary and PPE category determination, and NFPA 70E-compliant arc flash labels printed and physically installed on equipment.
How often should San Bernardino County facilities update their arc flash studies?
NFPA 70E recommends reviewing your arc flash study whenever significant changes are made to your electrical system, or at least every 5 years. Facilities with frequent equipment additions or utility service changes should review more often.
Is an arc flash study required by Cal/OSHA?
Yes. Cal/OSHA Title 8 requires California employers to assess electrical hazards including arc flash and provide appropriate PPE. NFPA 70E is the recognized standard. Non-compliance can result in penalties exceeding $25,000 per violation.
Ready to Schedule Your San Bernardino County Arc Flash Study?
We serve all of San Bernardino County — from the Inland Empire to the High Desert. Contact us for a no-obligation quote.
Call (562) 396-9924