PRO-LOGIC TECHNOLOGIES 0723763173 provides professional electrical cable solutions for residential, commercial, industrial and power-sector applications across Kenya. Our electrical services cover cable sizing, cable selection, cable installation, cable replacement, cable termination, cable testing, cable fault finding, power-cable installation, control-cable installation, armoured-cable installation, generator cabling, transformer cabling, industrial wiring and electrical distribution systems.

Electrical cables are the pathways through which electrical energy travels from a source to equipment and electrical loads. From a small lighting circuit in a home to large power cables supplying an industrial plant, selecting the correct cable is essential for safety, reliability, efficiency and equipment performance.

At PRO-LOGIC TECHNOLOGIES, we understand that cable selection cannot be based simply on cable thickness or the size another electrician used previously. Proper cable selection requires consideration of the electrical load, current, voltage, cable length, installation method, conductor material, ambient temperature, grouping, voltage drop, fault conditions, protective devices and environmental conditions.

Whether you are constructing a new building, upgrading an existing electrical system, installing machinery, connecting a generator, wiring a transformer, extending a distribution system or replacing damaged cables, PRO-LOGIC TECHNOLOGIES can provide practical electrical cable solutions suited to the application.

Electrical Cable Sizes and Where They Are Used

Cable sizes are normally expressed in square millimetres (mm²). The mm² value refers to the nominal cross-sectional area of the conductor.

Common cable sizes include:

0.5 mm², 0.75 mm², 1.0 mm², 1.5 mm², 2.5 mm², 4 mm², 6 mm², 10 mm², 16 mm², 25 mm², 35 mm², 50 mm², 70 mm², 95 mm², 120 mm², 150 mm², 185 mm², 240 mm², 300 mm² and larger sizes.

Each size has potential applications, but PRO-LOGIC TECHNOLOGIES does not recommend choosing cable size by size alone.

The correct cable depends on the complete electrical design.

0.5 mm² Electrical Cable

0.5 mm² conductors are generally associated with relatively small-current applications.

They can be encountered in:

Control circuits
Signalling
Instrumentation
Electronic equipment
Specialized low-current systems

The exact application depends on the cable construction and applicable installation requirements.

0.75 mm² Electrical Cable

0.75 mm² is commonly found in flexible cords and light-duty electrical equipment.

Potential applications include:

Small appliances
Lamps
Portable equipment
Control equipment
Flexible connections

The equipment manufacturer's specifications should always be checked before selecting a flexible cable.

1.0 mm² Electrical Cable

1.0 mm² cables can be used for selected low-current circuits.

Possible applications include:

Lighting
Control systems
Small equipment
Signalling

However, cable size must be confirmed according to the circuit design.

1.5 mm² Electrical Cable

1.5 mm² is a common size in building electrical installations.

It may be used for:

Lighting circuits
Lighting switches
Lighting control
Certain small electrical loads

At PRO-LOGIC TECHNOLOGIES, we assess the complete circuit before confirming whether 1.5 mm² is appropriate.

The installation method can significantly affect allowable current.

2.5 mm² Electrical Cable

2.5 mm² is widely used in building electrical installations.

It can commonly be encountered in:

Socket circuits
General-purpose outlets
Small appliances
General power circuits

However, 2.5 mm² does not have one universal current rating.

Its allowable current depends on installation conditions.

4 mm² Electrical Cable

4 mm² is suitable for various medium-load applications.

Possible uses include:

Higher-load circuits
Selected cooking equipment
Pumps
Air-conditioning equipment
Water-heating equipment
Workshop equipment
Selected industrial loads

PRO-LOGIC TECHNOLOGIES can assess the equipment rating, cable length and installation conditions before recommending the appropriate conductor.

6 mm² Electrical Cable

6 mm² is commonly considered for higher-load circuits.

Potential applications include:

Electric cookers
Water heaters
Large air conditioners
High-load appliances
Pumps
Workshop equipment
Selected subcircuits

The actual size should be determined by calculation and applicable requirements.

10 mm² Electrical Cable

10 mm² can be used for higher-current circuits and selected distribution applications.

Potential applications include:

Large appliances
Submains
Commercial circuits
Industrial equipment
Generator connections
Distribution feeders

Long cable runs may require larger conductors because of voltage-drop considerations.

16 mm² Electrical Cable

16 mm² conductors can be used in larger distribution systems.

Applications may include:

Building submains
Generator connections
Transformer connections
Large equipment
Distribution boards
Industrial machinery

25 mm² Electrical Cable

25 mm² cables are commonly encountered in larger electrical installations.

They may be used for:

Industrial feeders
Commercial submains
Generator connections
Transformer connections
Large machinery
Distribution systems

35 mm² Electrical Cable

35 mm² cables can be used for larger feeders.

Potential applications include:

Industrial plants
Generator systems
Transformer connections
Main distribution
Large motors
Commercial facilities

50 mm² Electrical Cable

50 mm² cables are suitable for various high-current applications when correctly selected.

They can be encountered in:

Industrial distribution
Generator feeders
Transformer connections
Large motors
Main electrical feeders

70 mm² Electrical Cable

70 mm² cables can be used for substantial industrial power systems.

Applications can include:

Large industrial feeders
Generator installations
Transformer secondary connections
Large motor supplies
Main distribution

95 mm² Electrical Cable

95 mm² cables can be used in larger power-distribution systems.

Potential applications include:

Industrial plants
Generator feeders
Transformer systems
Main switchboards
Heavy machinery
Large commercial buildings

120 mm² Electrical Cable

120 mm² cables can be used for major feeders.

Possible applications include:

Industrial distribution
Generator connections
Transformer feeders
Large commercial facilities
Main electrical distribution

150 mm², 185 mm² and 240 mm² Electrical Cables

These are large power-distribution conductor sizes.

They may be used in:

Manufacturing plants
Large commercial buildings
Industrial facilities
Power stations
Substations
Generator systems
Transformer connections
Large distribution networks

At these sizes, cable installation must be carefully planned.

300 mm² and Larger Cables

Large cables such as 300 mm², 400 mm², 500 mm² and 630 mm² can be used in major power-distribution applications.

These systems may involve:

Parallel cables
Large cable trays
Cable trenches
Specialized termination systems
Large cable glands
Hydraulic crimping
Heavy-duty cable cleats

PRO-LOGIC TECHNOLOGIES can provide electrical solutions for large industrial and commercial cable installations subject to the project's engineering requirements.

Electrical Cable Colour Codes

Understanding conductor colour identification is essential when installing, maintaining or troubleshooting electrical systems.

For modern IEC-style conductor identification:

Brown

AC line conductor

Black

AC line conductor

Grey

AC line conductor

Blue

Neutral conductor

Green/Yellow

Protective conductor / Earth

For DC systems:

Red

Positive DC line

White

Negative DC line

IEC 60445 specifies these conductor-identification principles. However, existing installations may use older conventions, so conductors should never be identified by colour alone.

PRO-LOGIC TECHNOLOGIES Cable Colour Code Guide

Colour	Typical identification
Brown	AC line
Black	AC line
Grey	AC line
Blue	Neutral
Green/yellow	Protective earth
Red	Positive DC
White	Negative DC

Important: Actual installation requirements and applicable standards must always be verified for the specific project.

Three-Phase Cable Colour Identification

A modern IEC-style three-phase installation may use:

Brown — L1
Black — L2
Grey — L3
Blue — Neutral
Green/yellow — Protective conductor

However, the colour sequence should not be used as proof of phase rotation.

For motors and three-phase machinery, PRO-LOGIC TECHNOLOGIES recommends appropriate phase-sequence verification during installation and commissioning.

Why Cable Size Matters

Choosing the correct cable size helps prevent:

Excessive heating
Voltage drop
Insulation damage
Equipment malfunction
Nuisance tripping
Electrical losses
Premature cable failure
Electrical fire hazards

A cable that is too small for the actual installation conditions may overheat.

A cable that is unnecessarily large can increase project cost without providing a justified technical benefit.

The objective is therefore to select the appropriate cable, not simply the largest cable.

Cable Sizing at PRO-LOGIC TECHNOLOGIES

Our cable-selection approach considers the application as a complete electrical system.

We consider factors such as:

Load current
Supply voltage
Single-phase or three-phase supply
Cable length
Copper or aluminium conductor
Installation method
Ambient temperature
Cable grouping
Voltage drop
Protective device
Short-circuit conditions
Cable insulation
Mechanical protection
Environmental conditions
Equipment manufacturer's requirements

Copper Electrical Cables

Copper cables are widely used because of their excellent electrical conductivity.

They are commonly used in:

Domestic wiring
Commercial buildings
Industrial installations
Control systems
Motors
Distribution boards
Equipment wiring

PRO-LOGIC TECHNOLOGIES can assist with copper-cable selection for appropriate applications.

Aluminium Electrical Cables

Aluminium cables are widely used for larger electrical distribution systems.

Advantages can include:

Lower weight
Suitable conductivity for many power-distribution applications
Availability in large conductor sizes
Potential economic advantages

However, aluminium cables require appropriate termination techniques and compatible accessories.

Armoured Electrical Cables

Armoured cables provide additional mechanical protection and are widely used for demanding installations.

Applications can include:

Underground power
Industrial plants
Generator systems
Commercial buildings
Outdoor installations
Transformer connections
Main feeders

A common example is Steel Wire Armoured (SWA) cable.

Proper glands, lugs, cleats and termination methods are essential.

Industrial Electrical Cable Installation

PRO-LOGIC TECHNOLOGIES can support industrial cable requirements involving:

Motors
Pumps
Compressors
Conveyors
Control panels
VFDs
PLC systems
Transformers
Generators
Switchboards
Distribution systems

Industrial environments require careful consideration of heat, dust, moisture, vibration, chemicals and mechanical damage.

Generator Cable Installation

Generator installations require correctly sized cables between the generator and electrical distribution equipment.

Cable selection may consider:

Generator kVA
Voltage
Phase configuration
Full-load current
Cable distance
Installation method
Voltage drop
Fault current
Protective devices
Neutral arrangement

PRO-LOGIC TECHNOLOGIES can provide generator cable installation and related electrical works according to the project's requirements.

Transformer Cable Installation

Transformers can require substantial electrical cabling on both primary and secondary sides.

Our transformer-related cable services can include:

Cable selection
Cable routing
Cable installation
Cable termination
Cable gland installation
Cable lug installation
Cable identification
Testing
Maintenance

Transformer cable selection must be based on transformer rating, voltage, current, fault conditions and installation requirements.

Motor Cable Installation

Motors require properly selected electrical cables.

PRO-LOGIC TECHNOLOGIES can support cable installation for:

Water pumps
Borehole pumps
Industrial motors
Compressors
Fans
Conveyor systems
Workshop machinery
Manufacturing equipment

Motor cable selection should consider both normal operating current and starting conditions.

VFD Cable Installation

Variable-frequency-drive installations require special consideration because the drive produces high-frequency switching.

Cable selection may need to consider:

Cable length
Shielding
Earthing
Electromagnetic interference
Motor insulation
Drive manufacturer requirements

PRO-LOGIC TECHNOLOGIES can assist with VFD-related power and control cabling.

Control Cable Installation

Control cables are used in automation and electrical-control systems.

They can connect:

PLCs
Relays
Contactors
Sensors
Actuators
Control panels
Motor starters
Industrial machinery

Proper identification and termination are essential for reliable control operation.

Cable Tray Installation

Cable trays provide organized routing for electrical cables.

PRO-LOGIC TECHNOLOGIES can support cable-tray installations for:

Factories
Warehouses
Commercial buildings
Workshops
Power plants
Industrial facilities

Cable trays must be appropriately sized and installed to provide adequate support and suitable cable separation.

Cable Trunking and Conduit

Conduit and trunking protect and organize electrical wiring.

They can help protect cables against:

Mechanical damage
Accidental contact
Environmental conditions
Poor cable routing

The selected wiring method affects cable thermal performance and therefore must be included in cable sizing.

Cable Fault Finding

PRO-LOGIC TECHNOLOGIES can assist with electrical cable fault diagnosis.

Potential faults include:

Short circuits
Earth faults
Open circuits
Insulation failure
Damaged cables
Burnt cables
Loose connections
Water ingress
Cable-joint failures
Overheated terminations

Depending on the installation, fault-finding equipment may include appropriate electrical test instruments and specialized cable-testing equipment.

Cable Replacement

Cable replacement may be required where cables have:

Burnt insulation
Mechanical damage
Poor insulation resistance
Overheated connections
Undersized conductors
Water damage
Aging insulation
Incorrect installation

PRO-LOGIC TECHNOLOGIES can assess the existing installation and recommend an appropriate replacement solution.

Cable Termination

Cable termination is just as important as cable selection.

A correctly sized cable can still overheat if its terminal connection is poor.

We can work with appropriate:

Cable lugs
Cable glands
Ferrules
Heat-shrink
Termination kits
Cable cleats
Identification systems

Cable Glands

Cable glands provide cable entry and mechanical retention.

They are particularly important for:

Armoured cables
Outdoor installations
Industrial equipment
Switchboards
Control panels
Generator systems

The gland must match the cable construction and environmental requirements.

Cable Lugs

Cable lugs provide electrical connections between conductors and equipment terminals.

The lug must be compatible with:

Cable material
Cable size
Terminal design
Installation requirements

Incorrect lug selection can result in overheating and connection failure.

Cable Voltage Drop

Voltage drop is a major consideration in cable sizing.

Longer cable runs generally produce greater voltage drop.

This is particularly important for:

Borehole pumps
Farms
Industrial machinery
Outdoor equipment
Remote buildings
Generator systems
Solar installations

A cable may have sufficient thermal current capacity but still require a larger conductor because of voltage-drop requirements.

Cable Grouping

When many cables are installed close together, heat can accumulate.

This can reduce the permissible current capacity of the cables.

Cable grouping should therefore be considered for:

Cable trays
Conduits
Trunking
Cable trenches
Switchrooms
Generator rooms

Cable Installation in Hot Environments

High ambient temperature can affect cable current capacity.

Industrial environments may contain:

Boilers
Furnaces
Generators
Compressors
Process equipment

Where temperatures are elevated, the cable must be selected accordingly.

Underground Cable Installation

Underground cables require consideration of:

Burial depth
Soil thermal properties
Water
Mechanical protection
Cable spacing
Ducting
Cable route
Fault protection

PRO-LOGIC TECHNOLOGIES can assist with underground power-cable installation where the project requirements permit.

Cable Installation for Commercial Buildings

We can support electrical cable systems for:

Offices
Hotels
Shopping centres
Schools
Hospitals
Warehouses
Apartments
Retail buildings
Restaurants
Commercial premises

Cable Installation for Residential Buildings

Residential electrical wiring can involve:

Lighting circuits
Socket circuits
Cooker circuits
Water-heater circuits
Pump circuits
Air-conditioning circuits
Main distribution
Submains
Earthing and bonding

Cable size should be selected according to the actual electrical design.

Cable Installation for Industrial Areas in Kenya

PRO-LOGIC TECHNOLOGIES provides electrical solutions for industrial and commercial projects where cable systems are required.

Our services can cover:

Nairobi Industrial Area, Embakasi, Baba Dogo, Ruaraka, Athi River, Syokimau, Mlolongo, Thika, Kiambu, Limuru, Nakuru, Naivasha, Eldoret, Kisumu, Mombasa, Machakos, Kitengela and other locations across Kenya.

Electrical Cable Services in Nairobi

PRO-LOGIC TECHNOLOGIES can assist customers in Nairobi with:

Electrical cable installation
Cable replacement
Cable sizing
Cable fault finding
Industrial wiring
Generator cabling
Transformer cabling
Motor cabling
Control wiring
Cable termination
Cable testing
Cable tray installation
Distribution-board wiring
Power distribution

Electrical Cable Services Across Kenya

Our electrical cable solutions can be required in:

Nairobi County
Kiambu County
Machakos County
Kajiado County
Nakuru County
Kisumu County
Uasin Gishu County
Mombasa County
Meru County
Nyeri County
Kirinyaga County
Kericho County
Kisii County
Kakamega County
Bungoma County
Trans Nzoia County
Siaya County
Homa Bay County
Migori County
Narok County
Bomet County
Nandi County
Murang'a County
Laikipia County
Embu County
Kitui County
and other parts of Kenya.

Why Choose PRO-LOGIC TECHNOLOGIES?

Choosing an electrical contractor for cable work is an important decision.

At PRO-LOGIC TECHNOLOGIES, our approach focuses on:

Proper cable selection

We do not rely on guesswork when assessing electrical cable requirements.

Professional installation

Cables should be routed, supported and terminated appropriately.

Fault diagnosis

We investigate the underlying cause of cable problems instead of simply replacing damaged sections.

Industrial capability

We understand that industrial cable installations have requirements different from ordinary household wiring.

Safety

Electrical work requires proper isolation, testing, protection and installation practices.

Maintenance

Regular inspection can help identify cable problems before they result in major equipment downtime.

Book PRO-LOGIC TECHNOLOGIES for Electrical Cable Services

If you need electrical cable sizing, cable installation, cable replacement, industrial cabling, generator cabling, transformer cabling, motor cabling, control wiring, armoured cable installation, cable termination, cable testing or electrical fault finding in Kenya, contact PRO-LOGIC TECHNOLOGIES.

We can assess the electrical requirement, identify the appropriate cable type and size, plan the cable route, install the required cable and accessories, terminate the cables correctly and test the completed installation as appropriate.

Whether the project is a home, apartment, office, shop, warehouse, hotel, school, hospital, workshop, factory, industrial plant, generator installation, transformer installation or power-distribution project, proper cable selection is essential.

PRO-LOGIC TECHNOLOGIES — Professional Electrical Cable Installation, Maintenance, Testing and Power Distribution Solutions Across Kenya.