Commissioning a large electrical contract — for a new hotel wing, a hospital block, an industrial plant, or a commercial complex — is one of the highest-stakes procurement decisions you will make on a construction project. Get it right, and the electrical infrastructure runs reliably for decades with minimal maintenance. Get it wrong, and the consequences compound: rework costs, project delays, safety failures, and regulatory non-compliance.
In Bihar and across North India, the electrical contracting market has a structural problem: the barrier to presenting yourself as a "contractor" is very low. Anyone with a mobile number and a few contacts can accept a large-scale job — and many do, without the qualifications, team, or documentation needed to deliver it safely.
Here are the five clearest warning signs — and a 10-point checklist you can use before you sign anything.
No GST Registration or Proper Invoices
In India, any contractor whose annual turnover exceeds ₹20 lakh is legally required to be GST-registered. For large-scale hotel, hospital, or industrial electrical contracts — which routinely run into tens of lakhs or crores — GST registration is non-negotiable.
When a contractor cannot produce a valid GSTIN or issues handwritten cash receipts instead of proper tax invoices, the liability does not disappear. Under GST law, you lose the right to claim Input Tax Credit (ITC) on those supplies, and in a disputed project, you have almost no financial recourse.
Ask for the contractor's GSTIN upfront. Verify it on the GST portal. Insist on tax-compliant invoices with HSN codes and clear breakdowns of labour versus material. Any hesitation on this point is a serious warning sign.
Cannot Explain Earthing, Load Balancing, or DB Ratings Clearly
Earthing, load balancing, and distribution board (DB) ratings are not advanced topics — they are the absolute basics of large-building electrical work. A qualified contractor should be able to explain, without hesitation, why your hotel needs a dedicated earthing electrode, how three-phase loads are distributed to avoid neutral overload, and what the appropriate MCB/MCCB ratings are for your main distribution board.
When a contractor gives vague or evasive answers — or defers them entirely to a 'supervisor who handles the technical side' — it signals that the person you are dealing with is a middleman, not a qualified professional.
Before finalising any contractor, ask: 'How would you earth this building? What load balancing approach would you use? What DB rating would you specify for the main incomer?' A competent contractor will answer clearly and confidently. An unqualified one will not.
Depends Entirely on Subcontractors — No In-House Team
This is one of the most common problems in the North Indian electrical contracting market. Many operators who present themselves as full-service contractors have no permanent staff at all. They win the job, then assemble a temporary team from casual labour markets — often different workers at different stages of the project.
With no in-house team, there is no institutional memory. Quality is inconsistent across phases. Safety standards become unpredictable because the contractor has no real authority over workers who answer to a gang leader, not to the firm. When something goes wrong, accountability evaporates.
Ask specifically: 'Do you employ your electricians directly, or do you hire through labour contractors?' Request to meet the site supervisor who will be physically present. A firm with a genuine in-house team will answer this easily.
Gives Only Verbal Quotations — No Written BoQ
This is the single biggest red flag you will encounter, and it is alarmingly common in Bihar and across North India.
A verbal quotation is not a contract. Without a written Bill of Quantities (BoQ), you have no clear record of exactly what wire sizes are specified, which switchgear brand is included, how many points are in scope, or what the payment milestones are linked to.
The result in practice is scope creep and cost escalation. Midway through your project, the contractor will raise a 'variation order' claiming that certain items were 'not in the original scope.' Without a written BoQ, you cannot dispute this. Insist on a written, itemised BoQ before any work begins or any advance is paid. If a contractor refuses, walk away.
No Genuine Past Project References
A contractor's portfolio should be verifiable — real buildings, real clients, real contact numbers. What you will often find instead are: stock photographs downloaded from the internet, vague descriptions ('we did a large hotel in Patna'), and reluctance to name the client or provide site visit access.
For large-scale projects — a multi-storey hotel, a 200-bed hospital, an industrial plant — the stakes are too high to rely on unverifiable claims. An unqualified contractor who has only done small residential wiring jobs will struggle with the complexity of load calculations, panel scheduling, generator integration, and regulatory compliance that large buildings require.
Ask for three to five project references. Call the clients. Ask if you can visit the completed site. A contractor with a genuine track record will welcome this due diligence. One who resists has something to hide.
10-Point Pre-Hiring Checklist: Before You Sign Any Electrical Contract
Complete every item before issuing a work order or paying any advance.
- 1
Verify GSTIN on the GST portal and request a sample tax invoice before signing.
- 2
Ask three basic technical questions: earthing method, load balancing approach, DB ratings. Evaluate the answers critically.
- 3
Confirm whether site workers are direct employees or subcontracted — ask to meet the site supervisor by name.
- 4
Refuse to proceed without a written, itemised Bill of Quantities (BoQ) with material specifications and unit rates.
- 5
Call at least two past project clients from references provided. Do not rely on written testimonials alone.
- 6
Request a site visit to one completed project of similar scale — hotel, hospital, or industrial plant.
- 7
Ask for the contractor's electrical licence (Wireman/Supervisor licence under the Indian Electricity Act).
- 8
Confirm the contractor carries workmen's compensation insurance and third-party liability cover.
- 9
Ensure payment terms are milestone-linked in writing — avoid large upfront advances without tied delivery milestones.
- 10
Check whether the contractor has previously worked with consultants or architects — it signals project management experience.
What Makes Concept Engineering Different
Concept Engineering is a GST-registered electrical contracting firm based in Patna, Bihar (GSTIN: 10GGOPK8478Q2ZC), operating under Chandrajeet Kumar (Founder & Director). Every project we take on is backed by a written, itemised Bill of Quantities prepared before any work begins — covering material specifications, quantities, unit rates, and a clearly defined scope boundary.
We maintain an in-house team of qualified electricians and site supervisors — no anonymous subcontractors, no unaccountable floating labour. Our portfolio covers hotel electrical works, hospital internal electrification, school and institutional buildings, and industrial installations across Bihar, Jharkhand, Uttar Pradesh, and Nepal.
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