Electrical Designer

Mangan Inc. is, an Automation & Engineering Firm, provides the highest quality services for the Refining, Gas & Oil, Pipeline, Utility Power, Renewable, Chemical, and Biopharm Industries. Mangan has over 30 years of experience in Engineering, Procurement and Construction with 15 years of experience in Lifesciences Engineering and Compliance Consulting. We are customer-centric and fully committed to our clients’ needs and as a result, most of our business is repeat business. We are an employee-owned company with opportunities for growth.

We are seeking an experienced electrical power designer to join our Long Beach Power Distribution group. This role will focus on substation and transmission power projects throughout the west coast.

Technical Qualifications

• 8 years electrical design experience in high-voltage (HV/EHV) substations and Medium Voltage and transmission line (TL) projects.
• Strong knowledge of 115–500 kV substation design, including
• Equipment layouts, one-lines, three-line
• Control and protection schematic drafting
• Grounding plans, lighting, conduit/cable routing
• Bus layouts, structure elevations, raceway systems
• Demonstrated experience preparing plan & profile, structure lists, sag-tension, and conductor selection for TL projects (PLS-CADD preferred).
• Proficiency in industry CAD tools:
• AutoCAD, MicroStation, or SDS – Substation Design Suite
• PLS-CADD, PLS-Pole/PLS-Tower (preferred)
• Revit (optional but beneficial)
• Familiarity with utility and regional standards (e.g., IEEE, NESC, WECC, California utilities, etc.).
• Understanding of line and station equipment: breakers, switches, CCVTs, CTs/PTs, wave traps, line terminals, insulators, arresters, structures, foundations, trenching, grounding.
• Ability to interpret engineering sketches, specs, vendor drawings, and perform design redlines.
• Working knowledge of BOM generation, design packages, as-built drawings, and document control

Primary Duties & Responsibilities

A. Substation Design Responsibilities

• Develop and update one-line diagrams, three-line diagrams, AC/DC schematics, and wiring diagrams.
• Produce general arrangement layouts, equipment plans, sections, elevations, and foundation interface drawings.
• Prepare conduit plans, cable schedules, trench details, and control building layouts.
• Prepare ground grid layout drawings, grounding connections, and support grounding study implementation.
• Coordinate with structural team on steel framing, equipment supports, and foundation details.
• Support engineers with load calculations, cable sizing, and raceway design.
• Perform redlines, corrections, and QC checks per standards and project requirements.
• Support creation of IFC design packages, bid packages, and as-builts.

B. Transmission Line Design Responsibilities

• Develop plan & profile drawings including conductor, shield wire, structure locations, and span details.
• Create structure loading trees, structure framing drawings, and hardware assemblies.
• Support sag-tension modeling using PLS-CADD.
• Generate construction staking, stringing charts, and field-ready drawings.
• Prepare material lists (BOM/BOQ) including poles, hardware, insulators, grounding, foundations.
• Interface with civil/structural teams on foundations, clearances, and road crossings.

C. Multi-Discipline Coordination

Coordinate regularly with:

• Electrical engineers (protection, SCADA, equipment)
• Civil/structural teams (grading, foundations, steel)
• Permitting/environmental teams
• Procurement / vendors
• Review vendor drawings for equipment integration (breaker layouts, switch details, control panels, etc.).
• Incorporate engineer markups, utility standards, and client redlines promptly and accurately.

• D. Quality, Documentation, and Standards

• Follow corporate and client CAD standards, layer conventions, file naming, and drawing organization.
• Ensure all work complies with IEEE, NESC, utility standards, and project specifications.
• Participate in QA/QC reviews, internal peer checks, checkpoint reviews (30%, 60%, 90%, IFC).
• Support creation and maintenance of design checklists, design criteria, and design template