When it comes to electrical safety, a solid earthing system is essential. Whether in industrial facilities, commercial buildings, or critical infrastructure—poor grounding can lead to equipment damage, electrocution, or fire hazards.
At Intertest Limited, we provide accurate and professional Earth Resistance Testing services to ensure your grounding system is safe, efficient, and compliant with national and international standards.
✅ What is Earth Resistance Testing?
Earth Resistance Testing (also called Earth Ground Testing) measures the resistance between the earth electrode (earth rod) and the ground. A low resistance value ensures that electrical faults or lightning currents are safely discharged into the earth—protecting people, property, and equipment.
🚨 Why is it Important?
Poor earthing or high resistance can result in:
- 🔥 Increased fire risk due to electrical faults
- ⚡ Electric shock or electrocution
- 🔌 Equipment malfunction or damage
- ❌ Failure to comply with safety standards (BSTI, BNBC, IEC, etc.)
Regular testing helps identify faults early and ensures reliable fault current dissipation.
📊 Acceptable Earth Resistance Values
| System Type | Recommended Resistance |
|---|---|
| Residential & Commercial | ≤ 5 Ohms |
| Sensitive Equipment (Data) | ≤ 1 Ohm |
| Power Substations | ≤ 0.5 Ohm |
Note: Values depend on soil condition, grounding system type, and regulatory guidelines.
🛠️ Methods We Use
Intertest Limited uses advanced, calibrated instruments to perform tests such as:
- 3-Point Fall-of-Potential Method
- Clamp-on Earth Ground Testing
- Stakeless Testing (for live systems)
Our technicians ensure safe procedures and accurate results on-site.
📍 Where is Earth Resistance Testing Required?
- Factories and industries
- Commercial buildings & apartments
- Hospitals and data centers
- Power stations and substations
- Telecom towers and IT facilities
🧑🔧 Why Choose Intertest Limited?
With years of experience in electrical safety and testing, Intertest Limited offers:
- ✔ Accurate digital test reports
- ✔ Site-wise comparison and recommendations
- ✔ Compliance with BSTI, BNBC, and IEC standards
- ✔ Fast, reliable service across Bangladesh
📄 What You’ll Receive:
- Earth Resistance Measurement (Ohms)
- System layout & testing method used
- Comparison with standards
- Recommendations for improvement
- Signed test report for audit & documentation
📞 Schedule Your Earth Test Today
A properly grounded system is not optional—it’s a legal and life-saving requirement. Let our experts help you stay safe and compliant.
📍 Intertest Limited
🌐 www.intertest.com.bd
📧 Email: info@intertest.com.bd