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Drawings, single-line diagrams and calculation reports

Electrical drawings in AutoCAD, single-line diagrams and calculation reports

Electrical drawings in AutoCAD, single-line diagrams, load schedules, conductor and protective device sizing, and electrical calculation reports for your project.

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Tools: AutoCAD · In-house spreadsheets

Single-line diagram of a distribution panelboard with its circuits and protectionSERVICE ENTRANCEMMETERMAIN BREAKER 3×60 AMAIN BUSBAR1×20 AC112 AWG
Office lighting
1×20 AC212 AWG
Common area lighting
1×20 AC312 AWG
General receptacles
1×20 AC412 AWG
Dedicated receptacles
2×30 AC510 AWG
Air conditioning
1×20 AC6—
Spare
SINGLE-LINE DIAGRAM · MAIN PANEL208/120 V · 3F + N + TEXAMPLE VALUESConceptual visualization
Panelboard single-line diagram (conceptual visualization).
What it includes

Scope of the service

  • Electrical drawings in AutoCAD

    Lighting, receptacle and power plans; details and clear legends for construction.

  • Single-line diagrams and panelboards

    Panelboard diagrams and distribution from the service entrance to the branch circuits.

  • Load studies and schedules

    Loads per circuit, phase balancing, demand factors and total project load.

  • Calculation reports

    Conductor, voltage drop and protective device calculations, with documented criteria and assumptions.

Deliverables

  • DWG and PDF drawings with project title block
  • Single-line diagrams
  • Load schedules
  • Electrical calculation report

What we need to quote

  • Architectural or existing design drawings
  • List of equipment and special loads
  • Supply details, if known
  • Project title block or template, if any

Scope and clarifications

  • Reports document the calculations of designs that ECOHIDRO prepares or reviews; third-party designs are not signed or validated without a full review.
  • Design is not an inspection or a certification of the installation: conformity of a built installation is declared by the installer and, where applicable, certified by an accredited inspection body.
Frequently asked questions

About drawings, single-line diagrams and calculation reports

When is a calculation report required?

When the project must technically support the sizing of conductors, protective devices and raceways, for example for design review or procedures that require it.

Do you deliver editable files?

Yes, DWG files are delivered together with the PDFs, unless the proposal states otherwise.

Do you have an electrical project under way?

Tell us what you need and we will assess the scope of the right engineering solution for your project.

Request a quote Contact ECOHIDRO

A specialized division of ECOHIDRO. ECOHIDRO also supports environmental compliance, plumbing design and water treatment. [email protected]

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