--- title: "Single and three-phase motor installation and repair — MX2 Electrical" description: "Single and three phase motor installation and repair in Poole and Bournemouth by NAPIT registered electricians at MX2 Electrical." canonical: "https://mx2-electrical-ltd.co.uk/services/three-phase-motor-installation-repair" last_updated: "2026-08-25T12:53:09.068Z" --- # Single and three-phase motor installation and repair — MX2 Electrical > Single and three phase motor installation and repair in Poole and Bournemouth by NAPIT registered electricians at MX2 Electrical. If you need machinery connected or an existing motor restored to working order, MX2 Electrical provides single phase and three phase motor installation and repair. NAPIT registered electricians inspect power feeds, isolate control circuits, test motor windings and wire starters across Poole, Bournemouth and Ferndown. ## Motor installation and repair price We charge an hourly labour rate for electrical motor diagnostics, repairs, and supply wiring. Total time depends on motor access, control gear layout, and fault complexity. - Single and three phase motor installation and repair: £70/hr - Covers electrical testing of motor windings, supply cable termination, and control circuit diagnosis on site. - Covers starter connection, isolator replacement, and verification of supply voltage across all phases. - Does not cover replacement motor units, specialist control boards, or mechanical pump overhauls. ## Start with the motor and its supply Electric motors in commercial units, workshops, and pump systems require correct supply wiring and matched overload protection to run reliably without overheating. - **Workshops and light commercial units:** Premises in Ferndown, Broadstone, and Poole often run three phase motors for extraction fans, compressors, and machine tools that require dedicated rotary isolation. - **Pumps and drainage systems:** Properties in coastal and low lying areas like Mudeford or Wareham rely on single phase and three phase pumps that need clean supply connections and water tight isolators. - **Motor control and starter faults:** Nuisance tripping, humming without starting, or thermal overload trips usually indicate electrical supply faults, loose connections, or degraded winding insulation. ## What the work can cover Our electrical work covers the incoming power supply, local control gear, and direct terminal connections to your motor. ### Included when agreed - Testing supply voltage, phase balance, and earthing continuity - Insulation resistance testing across motor windings - Wiring and replacing local rotary isolators - Connecting direct on line and star delta starters - Replacing contactors, relays, and thermal overloads - Verifying correct rotation direction and running current under load ### Not included automatically - Internal mechanical bearing replacement and shaft alignment - Rewinding motor stator or rotor coils - Plumbing and hydraulic pipework modifications - Supply of heavy industrial machinery units ## How the job works We inspect the supply and motor terminals methodically to trace electrical faults or complete a clean connection. 1. **Isolation and physical inspection:** We safely isolate the electrical feed, inspect the terminal box, check cable glands, and look for signs of thermal damage or moisture ingress. 2. **Meter testing and diagnostics:** Using calibrated test instruments, we measure winding resistance, test insulation breakdown, and confirm line voltages across all phases. 3. **Wiring and functional testing:** We terminate supply cables, set overload protection to the motor rating plate, energise the circuit, and measure running current under load. ## What you receive Every motor job finishes with verified connections and clear explanations of the electrical condition. - **Safe electrical connection:** Properly terminated cables, secure earthing, and correctly rated isolation switches suited to the operating environment. - **Clear fault findings:** A straightforward explanation of whether an operational issue sits in the incoming power, the control gear, or the motor itself. - **Relevant test record:** Recorded electrical readings covering supply voltage, winding resistance, and circuit protective device ratings. ## Motor electrical questions Common questions about single phase and three phase motor electrical work. ### Can you diagnose why my three phase motor keeps tripping the circuit breaker? I check for several common causes, including winding insulation breakdown, phase imbalance, a faulty thermal overload, or mechanical resistance putting excess electrical load on the circuit. I test the supply voltage under load and measure winding resistance to pin down whether the fault is in the wiring, control gear, or motor. ### Do you supply and fit new motor starters and isolators? Yes, I install direct on line starters, star delta controllers, and lockable rotary isolators matched to the full load current and kilowatt rating of your motor. I ensure the overload protection is set correctly to prevent future motor burnout. ### What is the difference between single phase and three phase motors? Single phase motors operate on a standard 230V supply and often rely on start or run capacitors. Three phase motors run on a 400V supply, deliver more consistent torque for industrial equipment, and require balanced voltage across all three line conductors. ### Can a single phase supply be converted to run a three phase motor? Running a three phase motor from a single phase supply requires either a variable frequency drive or a phase converter. The electrical supply circuit must also support the required input current. ## Business facts - Based: Aldhelms Road, Poole, BH12 1AE - Service area: Poole, Bournemouth, Broadstone, Wimborne Minster, Wareham, Parkstone, Ferndown, Christchurch, Canford Heath, Westbourne - Hours: Every day 00:00–23:59 - Phone: +447397844504 - Email: info@mx2-electrical-ltd.co.uk - Insurance: Public liability £2,000,000 - Qualifications: Nvq level 3, City&Guilds; Gold Card Electrician - Pricing rules: Current labour rate: £70 per hour.; Materials, specialist equipment and larger project work are confirmed separately before they go ahead. ## Request a quote - [Start a request](https://mx2-electrical-ltd.co.uk/#chat): Send the job details and postcode to MX2 Electrical. ## Related pages - [Electrical Fault Finding & Repair](https://mx2-electrical-ltd.co.uk/services/electrical-fault-finding): Find and repair electrical faults. - [EICR](https://mx2-electrical-ltd.co.uk/services/eicr): EICR testing and electrical safety reports. - [Fuse board replacement](https://mx2-electrical-ltd.co.uk/services/fuse-board-replacement): Consumer unit and fuse board replacement. - [PAT Testing](https://mx2-electrical-ltd.co.uk/services/pat-testing): PAT testing for landlords and businesses. - [Full sitemap](https://mx2-electrical-ltd.co.uk/sitemap.md): Complete machine-readable page directory.