Our Electrical Engineering & Contracting Services

As an NCA1 electrical contractor and EPRA A1–licensed electrical contractor, Jumba Engineering delivers end-to-end electrical solutions for commercial, industrial, institutional, utility, and public infrastructure projects across Kenya and the region. We design, engineer, procure, build, commission, and maintain reliable, code-compliant systems that reduce risk, improve efficiency, and power growth.

Below is a comprehensive summary of the services we offer.

Electrical Design, Studies & Compliance

  • Full electrical design: MV/LV network design, load assessment, single-line diagrams, cable sizing, short-circuit and voltage-drop calculations.

  • Protection coordination & selectivity studies (ETAP/Digsilent), settings sheets, relay grading.

  • Power system analysis: fault studies, arc-flash analysis, earthing system design, touch/step potential.

  • Lighting design (indoor, outdoor, roadway) to CIBSE/IES standards; emergency lighting and exit signage.

  • Hazardous area classification & Ex-proof designs for petroleum, gas and chemical facilities.

  • Technical documentation & approvals: drawings, BOQs/specifications, method statements, QA/QC plans, as-built packages.

  • Authority liaison & permitting: KPLC/KETRACO interconnections, EPRA approvals, utility meter applications, NEMA compliance support.

Medium- & Low-Voltage Power Distribution

  • MV works (3.3–33 kV and above): outdoor/indoor switchgear, RMUs, sectionalizers, capacitor banks, auto-reclosers.

  • Substations: 11/33 kV primary & secondary substations, compact substations, kiosk transformers (oil/DRY type), busbar systems and associated civil works.

  • Distribution networks: underground/overhead MV/LV feeders, cable pulling & jointing, terminations (heat-shrink/cold-shrink), pole-mounted transformers.

  • LV main distribution: MDBs, SMDBs, final DBs, busducts, rising mains, metering cabinets, feeder pillars.

  • Standby & prime power: diesel/gas generators, AMF/ATS panels, load-sharing & synchronising, fuel systems.

  • Earthing & lightning protection: earth grids, chemical & maintenance-free electrodes, bonding, surge protection devices (SPDs).

  • Street & area lighting: highways, estates, industrial yards, sports facilities, smart/solar street lighting.

Electrical Installations for Buildings & Industry

  • Complete wiring & containment: trunking, trays, ladders, conduits, pulling, glanding, termination and labelling.

  • Final circuits & accessories: sockets, lighting, emergency power, UPS circuits, clean power for ICT & medical.

  • Mechanical electrical: motor control centres (MCCs), VFDs/soft starters, pump & HVAC power, boiler rooms, chillers and plant rooms.

  • Specialist environments: hospitals (theatre IPS/UPS), data rooms, laboratories, cold rooms, clean rooms.

  • Fire detection & life safety: addressable/conventional fire alarm systems, voice evacuation, gas suppression (FM-200/Inergen/CO₂), emergency lighting.

  • Security & ELV: CCTV, access control, intruder alarm, electric fencing, intercom/PA, nurse call, parking/barrier systems.

  • ICT infrastructure: structured cabling (Cat6/Cat6A/Fibre), data centres/server rooms, Wi-Fi systems, racks, ODF/MDF, active equipment installation and testing.

Industrial Automation, Controls & SCADA

  • PLC/SCADA systems design, programming, HMI development and commissioning (Siemens, Schneider, Allen-Bradley, etc.).

  • Process instrumentation: sensors, transmitters, flow/level/pressure/temperature instrumentation, calibration and loop checks.

  • Telemetry & RTU for water/wastewater plants, energy & utilities; remote monitoring and control.

  • BMS/EMS integration: building management and energy management systems, BACnet/Modbus integration.

  • Motor control: MCCs, DOL/Star-Delta/VFD soft-start, conveyor/pump automation, sequencing & interlocks.

Power Quality, Energy Efficiency & Audits

  • Energy audits (ISO 50002-aligned) and conservation measures with ROI.

  • Power quality analysis: harmonics, flicker, imbalance, transients—reporting and corrective actions.

  • Power factor correction: automatic capacitor banks, detuned/reactor-based solutions for non-linear loads.

  • Thermographic inspections of switchboards, busbars and terminations; corrective maintenance plans.

  • Load studies & demand management: peak lopping, demand response, tariff optimisation.

Renewable Energy, Hybrid Power & Storage

  • Solar PV EPC (rooftop, ground-mount, carport): feasibility, design, procurement, installation, and O&M.

  • Hybrid systems: PV + diesel generator + grid with smart controls and load management.

  • Battery Energy Storage Systems (BESS): lithium-ion and advanced chemistries for peak-shaving and backup.

  • Net-metering & wheeling advisory, utility approvals, REC/green financing support.

  • Solar water heating and solar street/area lighting.

Testing, Commissioning & Certification

  • Factory & site acceptance testing (FAT/SAT) for switchgear, panels, protection relays and SCADA.

  • Electrical installation testing: insulation resistance, continuity, earth loop impedance, RCD tests, Hi-Pot/VLF for cables.

  • Relay testing & protection setting: secondary injection, end-to-end testing, GOOSE communications.

  • Certification: EPRA A1 completion certificates, test sheets, as-built documentation and O&M manuals.

  • Witnessing & third-party due diligence for clients, lenders and insurers.

Operations, Maintenance & Jumba Care Program

  • Preventive and predictive maintenance programs for plants, campuses and estates.

  • 24/7 emergency call-out and rapid fault diagnosis/restoration.

  • Substation & generator servicing, battery maintenance, load bank testing.

  • Spares management and asset lifecycle planning.

  • Service-level agreements (SLAs) with KPIs for uptime, response and safety.

EV Charging Infrastructure

  • AC & DC fast chargers supply and installation for commercial fleets, malls, estates, hospitality and public sites.

  • Load assessment & smart charging integration with solar PV/BESS and utility upgrades.

  • Billing, OCPP back-office & metering solutions.

Sector-Specific Electrical Solutions

  • Commercial & mixed-use developments: malls, high-rise offices & residences, hotels, stadiums and airports.

  • Industrial & manufacturing: factories, cement, food & beverage, pharmaceuticals, steel and logistics parks.

  • Public & institutional: universities, hospitals, data centres, public buildings, defence and justice facilities.

  • Water & wastewater: treatment plants, pump stations, reservoirs and telemetry networks.

  • Oil, gas & mining: depots, service stations, pipelines—hazardous area (ATEX/IECEx) installations.

  • Agriculture & agro-processing: irrigation pumping, cold storage, pack-houses and grain silos.

Turnkey EPC, Project Management & Procurement

  • Design–Build/EPC delivery from feasibility to handover.

  • Cost estimating & value engineering to meet budgets without compromising safety.

  • Global procurement & logistics of certified switchgear, transformers, cables, and specialist equipment.

  • HSE & Quality systems: ISO-aligned safety plans, risk assessments, permits to work, and comprehensive QA/QC.

Utility Interface & Metering

 

  • KPLC/KETRACO interfacing, wayleaves, metering, and service upgrades.

  • Advanced metering (AMI/AMR), revenue metering, CT/VT installations and calibration.

  • Feeder automation and smart grid components for estates and industrial campuses.