
specialist in high-voltage electrical systems for factories, high-rise buildings, and commercial projects. We provide pole installation, high-voltage cable laying, and low-voltage systems, covering factories, residential projects, and industrial estates. Emergency repair service is available 24/7.
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#High Voltage Electrical Contractor in Chonburi: Full-Scope Services
SJ Electrical Engineering Co., Ltd. is your comprehensive contractor for High Voltage (HV) Electrical Systems, covering everything from high voltage pole erection, high and low voltage line stringing, transformer installation, and Lightning Protection Systems.
Our service area covers Chonburi, Rayong, and Chachoengsao Provinces, including the industrial estates within the EEC (Eastern Economic Corridor).
We focus on Safety, compliance with PEA/MEA standards, and Maximum Efficiency to ensure the long-term stability of your electrical system.
💡 Our Services: Comprehensive and Integrated
We are ready to provide all types of electrical system work, from the External Power System Infrastructure to the Internal Electrical System.
⚡ High Voltage Utility Pole Installation
Erection of concrete utility poles according to PEA / MEA standards or Hot-Dip Galvanized Steel Poles.
Supporting projects for Industrial Factories / High-Rise Buildings / Housing Estates / Real Estate Projects.
Services include Layout Design, BOQ estimation, and On-Site Inspection Reports.
Preparation of official plans for government submission in full compliance with regulations.
⚡ High & Low Voltage Cabling
Power line routing from the transformer into Factories / High-Rise Buildings / Housing Estates.
Utilizing Industrial Grade Materials such as XLPE, Copper Cable, ACSR.
Supporting high current loads, ensuring safety, and resistance to heat and high voltage.
Voltage and resistance verification according to IEC / TIS standards.
⚡ Lightning Protection System (LPS) Installation
Design and installation of Air Terminals (Lightning Rods) based on engineering principles.
Comprehensive Grounding System setup.
Protection against static electricity and electrical leakage within buildings.
Using equipment standardized by IEC, UL, TISI for maximum safety.
⚡ Outsourcing and Emergency Electrical Services
For cases of Broken / Collapsed Utility Poles / Storm Damage / Vehicle Accidents.
Providing 24-hour urgent survey and repair services.
Our team is equipped with a full set of tools and ready-to-deploy vehicles.
🏭 Our Target Customer Groups
We provide services to:
Industrial Factories
High-rise buildings, Condos, Hotels, Hospitals
Housing estates and Real Estate Projects
Government agencies and community electrical systems
🚀 Why Choose "SJ Electrical Engineering"?
Professional team of technicians and engineers, certified by accredited institutions.
Highest Safety Standards (Safety First 100%).
Services offered at Fair and Transparent Pricing.
Quality assurance with electrical system certification documents.
Supporting projects in the EEC industrial zone and nationwide large-scale projects.
Utilizing electrical materials standardized by TIS / IEC for all work.
Over 10 years of experience in factory, high-rise, and government electrical works.
🌍 Service Area in the EEC and Nearby Provinces
Chonburi Province: Amata Nakorn, Sriracha, Bowin, Ban Bueng, Mueang Chonburi.
Rayong Province: Map Ta Phut, Ban Chang, Pluak Daeng.
Chachoengsao Province: Phanom Sarakham, Plang Yao, Mueang Chachoengsao.
Supporting all projects within the Eastern Economic Corridor (EEC Projects).
High Voltage Pole Installation & Cable Laying Bangkok, Samut Prakan, Samut Sakhon, Pathum Thani, Nonthaburi, Samut Songkhram, Nakhon Pathom, Saraburi, Phitsanulok, Sukhothai, Phetchaburi, Phichit, Kamphaeng Phet, Nakhon Sawan, Lopburi, Chainat, Uthai Thani, Sing Buri, Ang Thong, Suphan Buri, Nakhon Nayok, Eastern Region, Rayong, Chonburi,Chachoengsao, Sa Kaeo, Prachin Buri, Nakhon Nayok, Chanthaburi, Trat
Northeastern Region (Isan)
Nakhon Ratchasima, Khon Kaen, Nong Khai, Nakhon Phanom, Sakon Nakhon, Udon Thani, Nong Bua Lamphu, Loei, Kalasin, Mukdahan, Amnat Charoen, Yasothon, Roi Et, Maha Sarakham, Chaiyaphum, Buri Ram, Surin, Si Sa Ket, Ubon Ratchathani,
Northern Region
Chiang Mai, Chiang Rai, NanPhayao, Mae Hong Son, Phrae, Lampang, Lamphun, Tak, Phitsanulok, Sukhothai, Phetchabun, Phichit, Kamphaeng Phet, Nakhon Sawan, Uthai Thani
Southern Region, Songkhla
Nakhon Si Thammarat, Surat Thani, Krabi, Chumphon, Trang, Phatthalung, Phuket, Narathiwat, Pattani, Yala, Ranong, Phang Nga, Satun