Consulting Areas

Electrical Design Services

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Close view of an automatic transfer switch mechanism during a walkdown

Electrical Design and Construction Documents

Dreiym Engineering provides electrical engineering design services for power systems in new construction, expansions and upgrades at industrial, commercial and residential facilities. We produce the drawings, specifications and calculations that permitting, bidding and construction need, PE-stamped where required, and we can check the design with the same short circuit, coordination and arc flash studies we run for existing facilities.

Motor control center sections with drive keypads, cooling fans and disconnect handles — **Motor control center with drives**

Every design starts with the load: what the facility runs today, what it will add, and which loads have to stay on during an outage. From there we size the service, transformers, feeders and branch circuits, lay out distribution equipment with the working clearances the NEC^® requires, and select protective devices that coordinate. Where a facility is being expanded, we start from field-verified drawings, because a design built on an out-of-date one-line carries its errors forward.

Safety switches and conduit on an exterior building wall — **Safety switches on an exterior wall**

Our electrical design services include cost estimating and conceptual design through detailed engineering drawings, standards and specifications:

Facility electrical design and power distribution system design
Load lists and load estimates
Transformer sizing
Facility backup generation
Surge protection and lightning protection
Lighting plans
Equipment layout and electrical egress requirements
Soil resistivity surveys for grounding design

Typical deliverables are single-line diagrams, panel schedules, layout drawings, installation details, elevations, specifications and basis-of-design documents. Contact us about your application.

How a Design Project Works

We start with your drawings, site conditions and planned loads, then agree the service size, distribution layout and major equipment, with a cost estimate where you need one. Detailed drawings, schedules, calculations and specifications follow, coordinated with your architect or contractor and PE-stamped where required, with short circuit, coordination and arc flash studies when the project needs them.

Service entrance equipment on a metal building wall with meter, disconnects and a dry type transformer

Our electrical studies are modeled in ETAP^® and SKM and led by Brian J. Brackensick, P.E., so the same team that designs a system can check its fault duty, coordination and arc flash hazard.

When you contact us, you talk directly with an electrical engineer who can discuss your project. Our licensed Professional Engineers have active and past licensure in multiple states, our offices are in Coldspring, Texas and Westcliffe, Colorado, and we work nationwide. Deliverables are PE-stamped where required.

Frequently Asked Questions

Do you stamp electrical drawings?

Yes. Our licensed Professional Engineers stamp electrical construction documents where the jurisdiction or project requires it.

Can you design an upgrade to an existing facility?

Yes. We start by verifying what is actually installed, through a walkdown and as-built survey if the drawings are out of date, then design the changes and check them against the existing system.

Do you size backup generators?

Yes. We prepare load lists, size generators and transfer equipment, and plan which loads are served and in what order. Our load analysis page covers how we measure existing loads.