If switches and sockets are the control interfaces of your property, electrical wires and cables are the literal veins carrying vital energy through its walls. Cheap, under-gauged, or uncertified wiring is the single largest cause of structural electrical fires in India. Under heavy loads, low-grade copper or poor-quality plastic insulation can degrade quickly, causing overheating, power loss, and catastrophic short circuits.
At THS Now, we offer a comprehensive catalog of genuine, ISI-marked electrical wires and cables designed for maximum conductivity and thermal protection. Constructed with 99.97% pure electrolytic grade copper and advanced fire-retardant insulation, our cables guarantee a steady, highly efficient power grid for your home, office, or factory.
Factors for Choosing Electrical Wires
Selecting standard wire reels without understanding their technical limits can compromise your entire electrical system. Prioritize these vital engineering criteria before purchasing:
1. Understanding Wire Gauge (sq. mm) for Load Requirements
In India, electrical wire sizes are standardized by their cross-sectional area, measured in square millimeters (sq. mm). Selecting the correct size prevents the wire from overheating under load:
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1.0 sq. mm: Standard for low-power loops like LED lighting circuits, ceiling fans, and exhaust fans.
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1.5 sq. mm: Ideal for general utility sockets, televisions, desktop computers, and minor kitchen appliances.
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2.5 sq. mm: Essential for medium-to-heavy thermal loads such as water heaters (geysers), microwave ovens, and multi-plug kitchen points.
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4.0 sq. mm to 6.0 sq. mm: Mandatory for heavy air conditioners (1.5 tons and above), main distribution board connections, and electric vehicle (EV) charging points.
To prevent excessive voltage drop over long distance runs, engineers calculate the voltage drop using the following formula:
ΔV = (2 ⋅ L ⋅ I ⋅ R) / 1000
Where:
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ΔV is the voltage drop (in Volts)
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L is the single-run length of the cable (in meters)
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I is the current load (in Amperes)
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R is the conductor resistance (in Ω/km, which decreases as the wire thickness increases)
2. Safety Ratings: FR (Fire Retardant) vs. FRLS
During short circuits, the plastic insulation of your wiring faces immense thermal stress. Modern wires utilize advanced chemical formulations to limit fire hazards:
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FR (Fire Retardant): Designed to resist the spread of flames. If the heat source is removed, the wire self-extinguishes, preventing the fire from traveling down your wall cavities.
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FRLS (Fire Retardant Low Smoke): An advanced upgrade over standard FR. During a fire, FRLS insulation significantly limits the emission of toxic, black smoke and acid halogens. This maintains maximum room visibility and prevents toxic smoke inhalation, which is the leading hazard during structural emergencies.
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ZHFR (Zero Halogen Fire Retardant): The premium, eco-friendly standard. These wires produce absolutely zero toxic halogen gases and minimal white smoke during thermal failures, making them the safest choice for densely populated spaces like high-rises, hospitals, and schools.
3. Multi-Strand Copper for Better Flexibility
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Solid-Core Wires: Contain a single, thick copper conductor. While highly conductive, they are extremely stiff, making them prone to snapping when pulled through tight conduit corners.
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Multi-Strand Wires: Composed of multiple thin, high-purity copper strands twisted together. This design offers excellent mechanical flexibility, allowing installers to pull long wire runs easily through winding conduits without the risk of wire breakage.
Types of Wires & Cables
Explore our deeply cataloged selection of power and signal transmission lines:
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Domestic House Wires (Single Core): The primary wiring solution for modern residential and commercial buildings. These single-core, multi-strand flexible wires are color-coded in accordance with standard Indian electrical codes (Red/Yellow/Blue for Phase/Live, Black for Neutral, and Green for Earth) to ensure a safe, organized installation layout.
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Multi-Core Industrial Cables: Designed to carry high current loads across demanding commercial sites. Multi-core cables bundle two, three, or four individually insulated copper cores inside a heavy-duty, protective outer PVC sheath. They are perfect for heavy industrial machinery, outdoor distribution lines, and three-phase motor connections.
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Communication & Networking Cables: Ensure uninterrupted, high-speed data transmission across your property. This category features high-shielded Cat6 Ethernet cables for ultra-fast internet networking, low-noise Coaxial cables for cable TV and satellite dishes, and high-fidelity speaker wires that preserve audio signal clarity over long runs.
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Submersible & Flat Cables: Engineered to operate reliably under extreme conditions. These heavy-duty flat cables feature a highly waterproof, chemically resistant outer sheath, allowing them to power deep-well submersible water pumps continuously submerged under high water pressure.
Wire Sizing & Application Reference
| Conductor Size (sq. mm) |
Approximate Continuous Amperage |
Maximum Suggested Power Load |
Primary Household Application |
| 1.0 sq. mm |
11 - 12 A |
Up to 2300 Watts |
LED lights, exhaust fans, doorbells |
| 1.5 sq. mm |
15 - 16 A |
Up to 3400 Watts |
General sockets, televisions, laptops |
| 2.5 sq. mm |
20 - 22 A |
Up to 4600 Watts |
Geysers, washing machines, refrigerators |
| 4.0 sq. mm |
26 - 29 A |
Up to 6000 Watts |
1.5 - 2.0 ton ACs, induction hobs |
| 6.0 sq. mm |
35 - 38 A |
Up to 8000 Watts |
Main sub-distribution boards, solar systems |
Buy Professional-Grade Electrical Wires Online in India
Procuring genuine wiring should not require navigating crowded wholesale metal markets or running the risk of buying counterfeit wire reels that compromise your safety. THS Now provides a fully verified distribution pipeline, delivering certified domestic and industrial wires directly to your doorstep.
Our online store features clear specification sheets, exact conductor weight metrics, and real-time stock availability. Whether you are a homeowner wiring a single room or an electrical contractor sourcing bulk wire drums for a commercial high-rise project, our platform ensures authentic products, transparent bulk tier discounts, and secure shipping to any location in India.
Why Choose THS Now for Wires & Cables?
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99.97% Pure Electrolytic Copper: We supply wires crafted from ultra-pure, oxygen-free copper, reducing electrical resistance, minimizing energy loss, and lowering your monthly power bills.
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Strict Certification Standards: All our listed house wires strictly comply with IS 694 and IS 8130 guidelines, guaranteeing total peace of mind.
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100% Genuine, Anti-Counterfeit Stock: We bypass middle-tier trade hubs to procure directly from verified manufacturer pipelines, completely eliminating the threat of fake copper alloys or under-sized reels.
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Secure Industrial Delivery: Heavy wire coils and wooden drums are packed securely with heavy-duty protective wrapping to prevent shipping damage.
Frequently Asked Questions
What is the best wire size for a 1.5-ton AC?
For a standard 1.5-ton air conditioner, a 4.0 sq. mm single-core copper wire is highly recommended for the main line running from the distribution board (MCB) to the AC starter switch. While a 1.5-ton AC draws around 7 to 9 Amperes during normal operation, the inductive starting current of its compressor can spike much higher. A 4.0 sq. mm wire provides an excellent safety margin, prevents voltage drops, and prevents the cable from warming up during hot summer days.
What is the advantage of FRLS wires over standard FR wires?
Standard FR (Fire Retardant) wires are only designed to prevent the physical spread of fire. However, in enclosed structural spaces, the thick, toxic black smoke generated by burning PVC insulation is often far more dangerous than the fire itself. FRLS (Fire Retardant Low Smoke) wires are formulated to emit drastically less smoke and toxic acid fumes during a thermal failure, preserving visibility and safe breathing air to help occupants escape safely.
Do you sell original brands like Polycab and Finolex?
Yes, absolutely. THS Now deals exclusively in 100% authentic, original electrical brands, including industry leaders such as Polycab, Finolex, Havells, and KEI. Every reel we ship is sourced directly through official, certified corporate distribution channels, complete with original factory packaging and holographic anti-counterfeit labels.
How to Verify if a Wire is Genuinely ISI-Certified
Counterfeiters often print fake ISI logos on their packaging. To verify that your wire is genuinely certified, perform the following verification sequence:
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Inspect the wire insulation printing (Physical markings): Check the outer surface of the wire insulation. Genuinely certified wires must have the manufacturer’s name, brand, wire size (in sq. mm), voltage grade (typically 1100V), and the ISI mark (IS 694) clearly laser-printed or embossed at regular intervals of approximately one meter.
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Locate the unique CM/L registration number (License number identification): Look closely at the ISI logo printed on the product packaging label. A genuine certification will always display a unique CM/L (Certification/Licence) number (a 7-digit code) printed directly below or adjacent to the ISI mark.
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Verify the license on the BIS Care App (Bureau of Indian Standards database): Download the official BIS Care App (managed by the Bureau of Indian Standards) on your smartphone. Navigate to the "Verify Licence Details" section, input the 7-digit CM/L number found on your wire package, and execute a search.
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Confirm manufacturer name and status (Cross-matching manufacturing data): Review the search results displayed by the BIS database. Ensure that the manufacturer's official name, registered address, and product description exactly match the details on the wire reel. Additionally, confirm that the license status is displayed as "Operative" (active).
