Arc Flash Study & NFPA 70E Compliance
Ontario, CA Industrial Facilities
Ontario is the distribution capital of the Inland Empire — and one of the most Cal/OSHA-inspected industrial cities in California. Massive fulfillment centers, cold chain logistics, food manufacturers, and industrial service companies run high-voltage electrical systems that require current NFPA 70E arc flash compliance. Direct Source delivers complete arc flash studies for Ontario, CA facilities — 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 Ontario & San Bernardino County
Trusted by industry leaders
Direct Source serves Southern California’s top manufacturers
Complete Turnkey Package
What's Included in Our Ontario Arc Flash Study
We deliver a complete, code-aligned NFPA 70E arc flash study package — designed for Cal/OSHA compliance, worker safety, and operational uptime.
Field Data Collection
Equipment nameplate data, protective device settings, conductor sizes and lengths, and system topology — gathered on-site at your Ontario 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 and prevent nuisance trips throughout your facility.
IEEE 1584 Calculations
Incident energy levels, arc flash boundaries, and PPE categories calculated per IEEE 1584 methodology for every labeled location in your Ontario facility.
Arc Flash Labels: Printed & Installed
Durable, 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 for Ontario facilities.
Industries Served
Who We Serve in Ontario
Ontario's industrial base — anchored by Ontario International Airport and the I-10/I-15 interchange — includes fulfillment centers, cold storage, food processors, auto parts manufacturers, and logistics operators running high-voltage switchgear, motor control centers, and refrigeration electrical systems requiring current arc flash analysis under NFPA 70E and Cal/OSHA Title 8.
Distribution & Logistics
Fulfillment centers, warehouses, and cross-dock operations with MCC and conveyor electrical.
Food & Beverage Processing
Refrigeration compressors, processing MCCs, and production electrical under Cal/OSHA Title 8.
Manufacturing
Light and heavy manufacturers with 480V and medium-voltage switchgear and production equipment.
Healthcare & Life Sciences
Hospital campuses, medical offices, and research facilities with emergency and critical power systems.
Utilities & Water
Water district pump stations, treatment plants, and utility substations with medium-voltage switchgear.
Heavy Industrial
Cement, steel, aggregate, and process industries with high fault-current electrical environments.
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 Ontario
Arc Flash Studies for Ontario, CA Industrial Facilities
Ontario's industrial footprint spans multiple distinct corridors: the Airport Drive logistics cluster around Ontario International Airport (ONT) housing Amazon, UPS, and FedEx major operations; the Haven Avenue and Milliken Avenue distribution corridor along the I-10 with multi-million-square-foot fulfillment centers; the East 4th Street industrial zone with food processors and cold chain operators; and the Philadelphia Street manufacturing corridor with auto parts, plastics, and industrial suppliers. Many Ontario fulfillment centers run 480V/4160V switchgear, conveyor MCC systems, and large refrigeration compressors — environments where arc flash incident energy analysis is both legally required and operationally critical.
Direct Source Industrial Solutions serves fulfillment centers, cold storage operators, food processors, auto parts manufacturers, and logistics operators in Ontario and throughout San Bernardino County. We are based in Santa Fe Springs, CA — centrally located to serve the entire Southern California industrial market.
View All San Bernardino County Arc Flash Studies →Why Ontario 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 in San Bernardino County.
Responsive SchedulingWe respond within one business day and schedule field data collection quickly to minimize disruption to your operations.
C-10 LicensedDirect Source holds a California C-10 Electrical Contractor license — required for label installation on energized equipment.
Get Started
Request Your Ontario Arc Flash Study Quote
- We respond within one business day
- Field data collection, IEEE 1584, labels installed
- Serving Ontario & all of San Bernardino County
- Cal/OSHA compliant · C-10 Licensed
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FAQ
Ontario Arc Flash Study — Common Questions
Do you provide arc flash studies for Ontario, CA distribution and manufacturing facilities?
Yes. Direct Source Industrial Solutions provides complete NFPA 70E arc flash studies for distribution centers, food processors, and manufacturers in Ontario, CA. We handle field data collection, IEEE 1584 calculations, and label installation. Call (562) 396-9924.
Do large fulfillment centers and warehouses in Ontario need arc flash studies?
Yes. Any Ontario facility with electrical equipment operating at 50V or above — including fulfillment centers, cold storage, and distribution warehouses — requires an arc flash risk assessment under NFPA 70E and Cal/OSHA Title 8. Large logistics facilities with 480V/4160V switchgear, conveyor MCCs, and refrigeration electrical have significant arc flash exposure.
What does an arc flash study include?
A complete arc flash study from Direct Source 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 does a Ontario facility need to update its arc flash study?
NFPA 70E recommends reviewing your arc flash study whenever significant changes are made to your electrical system, or at least every 5 years. Ontario 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 Ontario Arc Flash Study?
Contact us for a no-obligation quote. We serve Ontario and all of San Bernardino County.
Call (562) 396-9924