How Good Electrical Drawings for Electrical Contractors, Engineers, Building Owner’s and Facility Managers Can Save Time and Money!

One- Line Diagram

The One Line Diagram is a simplified version of the schematic diagram. The difference is that the one-line diagram doesn’t show the complete circuit although the circuit is assumed. A single line represents the flow of electricity or information from one piece of equipment to the next, using symbols or labeled blocks. Simplified symbols exhibit basic details of the equipment and general connections. These diagrams are an excellent form of communication regarding the electrical power system to understand where to shut down a section of the system or for maintenance personnel to reference quickly.

We use the design engineer’s drawings and distribution equipment shop drawings to develop a detailed one line diagram representing a combination of the design requirements and shop drawings for contractors use and construction.

Our clients have benefitted from increased production, reduction in lost field time and readily identifying uncoordinated equipment.

Interconnection and Point to Point Wiring Diagrams

We have performed these services for clients (Owners, Electrical Contractors, Equipment Suppliers/Manufacturers and Other Engineering firms) who need assistance and/or troubleshooting with detailed constructability drawings. These are extremely helpful for the contractor in the field. Sometimes the un-clarity of the original design; unforeseen issues found in the field, coordination discrepancies between the trades (that may be uncovered after construction has started) can prevent them from completing the work and add unnecessary hours on the tail end of the project.

A Point to Point Wiring Diagram

The ultimate goal for any project is to minimize time, labor, material costs and complete the project on time.

Current Solutions services could involve developing detailed drawings to assist all involved. Our goal is to provide: clarity for what needs to be accomplished and how; coordination and communication amongst the trades and team; troubleshooting in the field; and emergency preparedness for the owner with accurate, easy to read drawings for future reference.

Basic wiring schematics, typically found in design documents, offer basic information; however, can be difficult to understand and follow by field personnel and consequently can add to costs once construction has begun. Design drawings are not always detailed or clear enough to build from or to “Determine in the Field” what the intent is.

Later that can become un-warranted complications and lost time for both the Electrical Contractors and the Electrical Design team. These complications thereby require unprecedented coordination and unnecessary man hours, increasing project costs for all. While at the same time, potentially compromises the project deadline, and the potential for added late charges.
Developing or breaking down the design drawings into actual detailed point to point wiring diagrams and interconnection diagrams representing actual wire terminations, will ease the angst of construction and can make the job more successful for all!
If performed early in the project, it will exponentially reduce the labor cost attributed to that increased amount of coordination between the Electrical Contractor and the Design Engineer.

What Are Point –To – Point Wiring Diagrams or Interconnection Wiring Diagrams

These drawings have more detail than the typical schematic drawings and enables an Electrical Contractor to better understand the system electrically, which will facilitate the project with more accuracy and precision thereby decreasing costs and schedule. These are a representation to how a system is “physically” wired and show the actual point-to-point wiring connections, all the interconnections and system components. These diagrams are extremely effective if they have been developed prior to the start of construction.

Samples of shown connections might include: each circuit installation showing all wiring, connections, terminal boards, and electrical components of the circuits, the layout of individual wire runs. It also identifies the wires by wire numbers and/or color coding of the interconnecting wiring.

Point to point wiring diagrams have been used extensively by Electrical Contractors who require correct and easily understandable drawings once they have begun construction. The goal is to ease the overall installation process; increase installation speed and efficiency; reduces errors in the field; help minimize rework and/or coordination time; assist with troubleshooting and/or the repair electrical or electrical components.

Once the project is completed, these drawings also allow the Owner, Engineer or Electrical Contractor to systematically troubleshoot problems that may arise. Without having to check the entire system the problem area can be quickly identified and isolated, to certain pieces of equipment, on the wiring diagram. Keeping good copies of the wiring diagrams, on file, will ensure that the information will be readily available when needed.