Last updated: October 24, 2026
Technical contact: Hüseyin ÇOKAL, Electrical and Electronics Engineer. Content updated: October 24, 2026.
What changed: Service scope, report outputs, official sources, pre-proposal information and technical transparency notes were reviewed for the current period.
Electrical Contracting Services Summary
- Define the project and work boundary for a new installation, additional circuit or modification.
- Assign material, assembly and interface responsibilities for panels, cables, trays/busbar and connections.
- Coordinate outages, critical loads and safe access with the operator of an existing facility.
- Select equipment-appropriate tests and retain results, limitations and outstanding items.
- State whether design, additional works, authority processes, servicing and statutory inspections are included or separate.
Technical contact and professional information
Electrical Contracting Services Scope
What the contracting package delivers
The deliverable is the electrical work agreed for a factory, warehouse, production line or commercial building. It may be a new installation, a defined feeder, panel modification or extension. Complete LV/MV/HV systems, design, panel manufacture and all auxiliary services are not presumed in every package. Set the boundary through drawings and an equipment list.
Build the proposal from technical information
Review drawings, connection points, load demand, equipment, cable routes and operating conditions. Where load, fault-level or coordination studies are needed, define their inputs and deliverables separately. A transformer rating or spare panel outgoing way alone does not establish suitability for an additional load.
| Agreement item | What to define |
|---|---|
| Project and quantities | Applicable revision, circuits, materials and quantity basis |
| Responsibilities | Design, supply, panel manufacture, installation, testing and operator interfaces |
| Programme | Access, outages, other disciplines and approval/supply dependencies |
| Verification and handover | Methods, criteria, results, open items and as-built records |
| Changes and support | Additional-work decisions, cost/time effects and agreed post-delivery terms |
Panels, cabling and field implementation
Distribution, MCC or control panels, cables/trays, busbar, lighting, socket and grounding works can be included by project. Relate product duties, mechanical support, cable properties, connections and labels to the design and manufacturer instructions. A proposed material substitution needs assessment of its technical and commercial effects rather than automatic acceptance.
Modifying an operating installation
Agree outage windows, critical loads, backfeeds, work areas and transition arrangements with the responsible site team. Staged work does not imply uninterrupted supply or live working. Allow time for verification and define stop/return conditions and the person responsible for re-energization in the work plan.
Completion tests and energization
Select visual/connection checks and appropriate continuity, insulation, phase-relationship or functional tests for the actual circuits. Do not apply a generic test voltage to connected electronics; separation and reconnection boundaries follow the equipment method. Record conditions and results. Operator decisions, authorized acceptance and connection requirements are assessed separately from physical testing.
Protection, grounding and auxiliary interfaces
Protection and coordination use actual source and equipment data without guaranteeing continuity during every fault. Connection continuity is different from assessing the complete grounding system. If generator, UPS, fire-alarm or automation connections are included, identify the verification endpoint. Completing an electrical connection does not establish acceptance of the whole connected system.
Handover records and outstanding work
Relate agreed as-built drawings, circuit/label lists, product documents, test records and operating information at handover. Untested or unresolved work remains open. Commissioning does not establish unlimited expansion capacity or remaining life; reserves and operating conditions must be explicit in the design.
Additional works and continuing services
Agree the scope, cost and programme effect of later circuit, quantity, equipment or design changes. Warranty and support terms belong in the agreement; no duration is inferred from this page. Periodic examination, operating responsibility and subsequent servicing are distinct services. Share the location, drawings and required work to begin defining a proposal.
Reporting, Inspection and Proposal Preparation
Sample Inspection Table
This table summarizes which headings are evaluated on site and which outputs may appear in the report.
| Inspected area | Checked criterion | Report output |
|---|---|---|
| Site and equipment condition | Existing equipment structure, access conditions, visible risks and operating conditions | Site inspection note and prioritized findings list |
| Document and project conformity | Single-line diagram, current project, labeling, reports and conformity with site implementation | Document conformity assessment and missing record list |
| Safety and operational risk | Life safety, equipment safety, energy continuity and maintenance access risk headings | Risk classification and corrective action recommendations |
| Measurement, test or inspection need | Measurement, test, visual inspection and technical review items required by the service scope | Measurement/test plan or inspection scope note |
| Reporting and follow-up | Nonconformity priority, follow-up date, responsibility allocation and next steps | Photo-supported report, action list and follow-up recommendation |
Contracted Installation and Additional Work
The electrical installation and commissioning work specified in the proposal belongs to this service. Changes beyond that agreed scope are evaluated separately.
| Work item | Relationship to the service | Scope decision |
|---|---|---|
| Agreed electrical installation and commissioning | Panel assembly, cabling and completion tests follow the agreed project and work scope. | Installation work and test records are delivered within the contracted scope. |
| Additional circuits, equipment or project changes | Changes may affect materials, labour and the planned outage. | Scope, cost and schedule are clarified before additional work begins. |
| Separate statutory periodic inspection | A completed installation or commissioning test does not replace statutory inspection. | Where required, authorization, contract and inspection reporting are planned separately. |
Pow-Sys technical report template
Blank template — not a completed report. No customer information or measurement results are included.
| Heading | Record to be completed |
|---|---|
| Scope | [Areas, equipment and documents examined] |
| Method | [Applicable criteria, instruments and calibration information] |
| Finding | [Observed condition and supporting record] |
| Measurement | [Result, unit, method and report reference, if measured] |
| Assessment | [Applicable criterion and conclusion of the authorised inspector] |
Technical and Regulatory Sources
- EMO certificate verification portal
Claim supported on this page: EMO registration, SMM and certificate verification transparency.
- TEDAŞ official website
Claim supported on this page: Distribution infrastructure, project/acceptance processes and technical specification context.
- TEİAŞ official website
Claim supported on this page: Transmission system, connection and high-voltage infrastructure context.
- Electrical High Current Installations Regulation
Claim supported on this page: Installation, operation, maintenance and safety of high-current electrical installations.
Frequently Asked Questions
What exactly does electrical contracting service cover?
It covers the electrical work defined by the agreement. Panels, cables, trays/busbar, grounding and auxiliary connections may be included. Specify design, supply, manufacture, testing and handover responsibilities; all LV/MV/HV work is not automatic.
For which facilities is electrical contracting service suitable?
It can be planned for industrial or commercial installations needing new work, circuit additions, capacity changes or modifications. Actual project, equipment and operating conditions define the boundary rather than the facility label alone.
What is the difference between electrical contracting and project design service?
Design produces calculations, drawings and technical requirements; contracting implements defined field work. They can share an agreement, but design, approval, installation and verification responsibilities need explicit allocation.
What determines electrical contracting prices?
Quantities, materials/labour, project status, voltage and equipment boundaries, access, outages and verification/delivery scope shape the price. Compare assumptions and change-control terms as well as the total. A general price list cannot replace the actual scope.
Can electrical revision be carried out in an operating facility?
It can be considered with a suitable plan for critical loads, backfeeds, safe isolation, outage windows and post-transition checks. Staging does not guarantee uninterrupted supply or authorize live intervention.
Why are testing and measurement necessary in electrical contracting projects?
Checks record the installed circuit against stated criteria and conditions. Define methods, instruments, connection boundaries and results rather than applying one test to every circuit. A favourable result does not verify the complete site or every future condition.
Why is grounding important in electrical contracting projects?
Protective and equipotential functions depend on the actual network arrangement and implementation. Continuity, electrode measurements and other safety assessments are different evidence. One resistance value does not establish complete compliance.
Can electrical contracting service include the MV and transformer side?
Yes, where MV switchgear, transformers, protection and operator interfaces are explicitly included. Determine applicable design, eligibility, test and energization requirements for that work. An LV assembly scope does not include them by default.
What does turnkey electrical contracting mean?
It means organizing the agreed works together, not an unlimited package. The agreement should identify included design, supply, assembly, tests, authority processes and post-delivery support.
Is a site survey required before electrical contracting work begins?
Documents may support an initial proposal; routes, access and existing conditions can require field verification. Record inaccessible parts and quantity/programme effects. An initial discussion is not a completed site survey.
Can panel assembly, cabling, testing and commissioning be handled within the same scope?
Yes, with defined responsibilities and deliverables. Specify test types, criteria, records and open-item management. Listing a task does not establish that every check has actually been completed.
How can I get a proposal for electrical contracting service?
Share the location, installation or revision required, drawings, equipment/load data and any outage constraints. Assess missing information and survey needs before defining included and separate work.
Is VAT withholding applied to electrical contracting works?
Treatment depends on the actual work, parties and current tax rules. This page supplies no binding rate or classification. Define the technical scope and billing arrangement, then have the specific agreement assessed by the relevant financial adviser.
What should an electrical contracting agreement cover?
Define the technical scope, drawing revision, quantity/material basis, responsibilities, programme, outages, test criteria, handover documents and change process. Payment, warranty and support need explicit terms. The parties should assess legal and financial conditions with their advisers.