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Guides & Comparisons

XLPE Cable vs PVC Cable — Which is Better for Your Project?

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XLPE Cable vs PVC Cable — Which Should You Choose?

A Clear Comparison for Contractors, Builders & Electrical Engineers

One of the most common questions we get at JSR Group is: should I use XLPE or PVC insulated cables for my project? Both are widely used in India, but they have significant differences in performance, cost, and the right applications. This guide explains everything you need to know.

XLPE vs PVC Cable — Head to Head Comparison

Parameter XLPE Cable PVC Cable
Max. Operating Temp. 90°C 70°C
Current Carrying Capacity ~15–20% higher Standard
Short Circuit Rating 250°C 160°C
Water Resistance Excellent Good
Chemical Resistance Excellent Moderate
Service Life 40+ years 20–25 years
Cost 8–12% higher Lower

✅ Use XLPE When:

  • Underground cable laying
  • High ambient temperature areas
  • Industrial plant feeders
  • Long cable runs needing smaller size
  • Areas with moisture or chemicals

✅ Use PVC When:

  • Indoor cable trays and ducts
  • Short cable runs in buildings
  • Budget-sensitive projects
  • Normal temperature environments
  • Light commercial installations

JSR Group Recommendation

For any project where cables will be underground, in areas with high ambient temperatures, or where you want a longer service life with lower maintenance, always specify XLPE cables. The small extra cost pays back over the cable life. For indoor tray wiring in air-conditioned commercial buildings, PVC is perfectly adequate and more economical.

Need Help Choosing the Right Cable for Your Project?

+91-9311945078  |  Our technical team helps you specify the right cable size and type  |  Gurgaon, Delhi NCR

Aluminium Cable vs Copper Cable — Differences, Cost & When to Use

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Aluminium Cable vs Copper Cable

Complete Comparison — Cost, Performance & When to Use Each

The choice between aluminium and copper cables is one of the most important decisions in any electrical project. Both have their place — and using the wrong one can mean either overspending unnecessarily or compromising on performance. Here is a complete, practical guide from JSR Group.

Aluminium vs Copper Cable — Full Comparison

Property Aluminium Cable Copper Cable
Conductivity 61% of copper 100% (reference)
Weight 3× lighter than copper Heavier
Cost 40–60% cheaper Higher
Flexibility Less flexible More flexible
Min. Practical Size 16 sqmm 1 sqmm
Typical Use Underground, main feeders Wiring, panels, control

✅ Choose Aluminium For:

  • Underground distribution cables
  • Building main feeder cables (35 sqmm+)
  • Overhead power lines
  • Long cable runs (50m+)
  • Budget-critical projects

✅ Choose Copper For:

  • House and building wiring (up to 16 sqmm)
  • Control cables and panel wiring
  • Flexible cables and connections
  • Critical circuits (hospitals, data centres)
  • Short runs where space is limited

Need Cable Sizing Advice for Your Project?

+91-9311945078  |  JSR Group, Gurgaon — Supplying Delhi NCR since 2010

FR Wire vs FRLS Wire — What is the Difference?

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FR Wire vs FRLS Wire — What is the Difference?

Know Which Wire is Right — and Which is Mandatory — for Your Building

If you are building a house, office, or commercial space, you have probably seen both FR (Flame Retardant) and FRLS (Flame Retardant Low Smoke) wires in the market. They look identical from the outside, but they have very different fire safety properties — and using the wrong one in a commercial or public building can mean failing a fire safety inspection.

FR vs FRLS vs FRLSZH — Full Comparison

Property FR Wire FRLS Wire FRLSZH Wire
Resists catching fire ✅ Yes ✅ Yes ✅ Yes
Low smoke emission ❌ No ✅ Yes ✅ Yes
Zero halogen (non-toxic) ❌ No ❌ No ✅ Yes
Cost Lowest 5–10% more Highest
Best For Homes, villas Commercial buildings Hospitals, data centres

⚠️ Why Smoke Matters More Than Fire

In most building fires, people do not die from flames — they die from smoke inhalation. FRLS wires release significantly less smoke than FR wires when burning, giving occupants more time to evacuate. This is why FRLS is now mandatory in public and commercial buildings under NBC 2016.

Buy FR & FRLS Wires from JSR Group, Gurgaon

+91-9311945078  |  All sizes in stock  |  Delivery across Delhi NCR

How to Choose the Right MCB Rating for Home & Office

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How to Choose the Right MCB Rating for Your Home or Office

A Simple Guide to Selecting MCB Ampere Rating & Trip Curve

Choosing the wrong MCB rating is one of the most common electrical mistakes in homes and offices. An undersized MCB trips too frequently causing inconvenience. An oversized MCB does not trip when it should, leaving your wiring dangerously unprotected. This guide from JSR Group helps you select the right MCB for every circuit.

Step 1 — Understand MCB Ratings

MCBs are rated in Amperes (A). Common residential ratings are 6A, 10A, 16A, 20A, 25A, 32A, 40A, and 63A. The rating indicates the maximum continuous current the MCB allows before tripping.

Step 2 — Match MCB to Wire Size

Wire Size Max. Current MCB Rating Typical Use
1 sqmm 10A 6A Lights, fans
1.5 sqmm 15A 10A Light + small sockets
2.5 sqmm 20A 16A General power sockets
4 sqmm 27A 20A AC, geyser circuits
6 sqmm 35A 32A Main sub-panel incoming

B, C, D Curve — What Does It Mean?

B Curve — trips at 3–5× rated current. Best for resistive loads like geysers and heaters.
C Curve — trips at 5–10× rated current. Best for general use — motors, AC units, mixed loads. Most common choice.
D Curve — trips at 10–20× rated current. For high inrush loads like transformers and large motors.

Buy Polycab MCBs in Gurgaon & Delhi NCR

+91-9311945078  |  All ratings and curves in stock  |  JSR Group, Gurgaon

Single Compression vs Double Compression Cable Gland — Which to Use?

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Single Compression vs Double Compression Cable Gland

Which Type is Right for Your Cable Termination?

Cable glands are used to terminate cables at panels, junction boxes, and equipment entries — providing a secure mechanical grip and environmental seal. The two most common types are single compression and double compression glands. Choosing the wrong type can compromise your IP rating, cable retention, and safety. Here is a complete guide from JSR Group.

Single vs Double Compression — Key Differences

Feature Single Compression Double Compression
Cable Type Unarmoured cables Armoured cables (SWA)
Compression Points 1 (outer sheath only) 2 (armour + outer sheath)
IP Rating Up to IP54 Up to IP68
Mechanical Strength Standard High — armour gripped
Use Case Indoor panel entries Outdoor, underground, industrial
Cost Lower Higher

✅ Use Single Compression For:

  • Indoor MCC and DB panel entries
  • Unarmoured control cables
  • Dry, protected indoor environments
  • PVC flexible cable connections

✅ Use Double Compression For:

  • All armoured cable terminations
  • Outdoor equipment entries
  • Pump motors and outdoor panels
  • Underground cable entries
  • Anywhere IP67/68 is required

Buy Dowells Cable Glands in Gurgaon & Delhi NCR

+91-9311945078  |  Complete Dowells range in stock  |  JSR Group, Gurgaon

What is MCCB and When Do You Need One?

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What is an MCCB and When Do You Need One?

Moulded Case Circuit Breakers Explained for Contractors & Engineers

If you are designing or procuring electrical switchgear for a factory, commercial building, or large residential complex, you have likely come across the term MCCB (Moulded Case Circuit Breaker). Unlike the familiar MCB used in home distribution boards, an MCCB handles much higher currents and provides adjustable protection settings for industrial and commercial applications.

MCB vs MCCB — Key Differences

Feature MCB MCCB
Current Rating Up to 125A 16A to 1600A
Breaking Capacity Up to 10kA Up to 85kA
Trip Settings Fixed Adjustable
Size Small — fits in DB Large — switchboard mounted
Typical Application Homes, small offices Factories, commercial mains

When Must You Use an MCCB?

  • Incoming protection for main LT panels in factories and large commercial buildings
  • Feeder protection for sub-panels drawing more than 125A
  • Motor protection in industrial motor control centres (MCCs)
  • Bus coupler and bus section switches in HT/LT substations

Buy MCCBs in Gurgaon & Delhi NCR

+91-9311945078  |  Complete MCCB range in stock  |  JSR Group, Gurgaon

What is Fire Survival Cable and Where is it Required?

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What is Fire Survival Cable and Where is it Required?

Everything Architects, MEP Consultants & Contractors Need to Know

A fire survival cable (also called a circuit integrity cable or fire resistant cable) is specifically engineered to continue functioning and carrying electrical current even during a fire. Unlike standard FRLS cables which merely slow the spread of fire, a fire survival cable maintains its circuit integrity at temperatures up to 850°C for a specified duration — typically 30, 60, or 120 minutes.

FRLS Cable

Slows fire spread and reduces smoke. Does NOT stay functional during a fire. Used for general wiring.

✅ Fire Survival Cable

Stays functional during a fire for 30–120 minutes. Powers life safety systems. LSZH insulated.

Where is Fire Survival Cable Mandatory?

System Why Fire Survival Cable is Required
Fire Alarm System Must remain operational to detect and signal fire
Emergency Lighting Must operate during evacuation in fire conditions
Fire Pump Power Supply Sprinkler and hydrant pumps must run during fire
Smoke Extraction Fans Must operate to clear escape routes of smoke
PA / Voice Evacuation System Must remain functional to communicate evacuation

Buy Fire Survival Cables in Gurgaon & Delhi NCR

+91-9311945078  |  IS:17048 & IEC:60331 compliant  |  JSR Group, Gurgaon

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