Electrical-­installation for new builds, old buildings & commercial buildings

• Basics:
  • Creation and testing of circuit diagrams and electrical schematics
  • Cable laying (surface-mounted, flush-mounted, in ducts, cable trays)
  • Installation of empty conduits and installation boxes
  • Connection and wiring of distributors (main distributors, sub-distributors)
  • Installation of sockets, light switches and dimmers
  • Earthing and potential equalisation
• Safety:
  • Installation of residual current circuit breakers (RCD/FI) and miniature circuit breakers (MCB)
  • Overvoltage protection
  • Lightning protection systems (indoor and outdoor)
  • Testing in accordance with DGUV V3 (formerly BGV A3) and DIN VDE standards
• Energy supply:
  • Connection of meters and measurement technology
  • Installation of main lines and meter connection cabinets
  • Ensuring energy efficiency
• Communication/data:
  • Laying data cables (LAN/network)
  • Installation of data sockets and network distributors
  • Telephone and aerial systems (SAT/cable)
• Maintenance & repair:
  • Troubleshooting and fault rectification
  • Maintenance and servicing of existing systems
  • Repair of electrical systems and devices
• Documentation:
  • Preparation of inspection documents
  • Documentation of circuit diagrams and cable assignments

• New installation & refurbishment:
  • Complete installation of electrical systems in new buildings
  • Renewal and modernisation of old electrical systems (renovation in accordance with VDE standards)
  • Extension of existing systems (e.g. extensions, loft conversions)
• Standard installation:
  • Installation of sufficient sockets and light outlets
  • Installation of switches, push-buttons and dimmers
  • Connection of household appliances (cooker, oven, washing machine, tumble dryer)
  • Installation of cooker connection sockets
• Lighting:
  • Installation of interior and exterior lighting
  • Installation of motion detectors for corridors, stairwells, outdoor areas
  • Connection of lamps and lights
• Safety & comfort:
  • Smoke alarms (mandatory installation)
  • Intercom systems and video intercom systems
  • Installation of roller shutter controls (manual/electric)
  • Installation of underfloor heating (electric)
  • Installation of WLAN access points
  • Preparation for e-mobility (wallbox connection)
• Multimedia:
  • TV and radio connections (cable, SAT, DVB-T2)
  • Network cabling for home networks (LAN)
  • Installation of audio/video distributors

• Centralised systems:
  • Installation of fire alarm systems (BMA) and evacuation systems
  • Emergency and safety lighting systems (centralised/decentralised)
  • Access control systems (electronic door locks with card readers)
  • Hotel management systems (integration of lighting, air conditioning, door status)
  • Video surveillance systems (CCTV) for public areas
• Guest rooms:
  • Sufficient number and arrangement of power sockets (including USB charging sockets)
  • Light switches (comfort switches by the bed, all-off switch)
  • Minibar and TV connections
  • Devices for hairdryers and bathroom mirror lighting
  • Card or key switch to save energy when leaving the room
• Public areas:
  • Lighting concepts for lobbies, corridors, restaurants, bars, conference rooms
  • Installation of lighting control systems (DALI, KNX)
  • Sockets for cleaning equipment
  • Emergency call systems in toilets for people with disabilities
• Kitchen and technical rooms:
  • Power connections for kitchen appliances (cooker, dishwasher, convection oven)
  • Connection of ventilation and air conditioning systems
  • Security systems and special distributors for technical rooms
• WLAN & communication:
  • Comprehensive WLAN network (access points)
  • Telephone systems (VoIP or classic)
  • Emergency telephones in lifts

• Lighting:
  • Professional shop lighting for product presentation (track spotlights, accent lighting)
  • Installation of ceiling lights (downlights, louvre lights)
  • Shop window lighting (with timers/twilight sensors if necessary)
  • Emergency lighting and safety lighting
• Power supply:
  • Sufficient sockets for checkout areas, offices, cleaning rooms
  • Power connections for air conditioning systems, freezers, ovens (bakeries)
  • UPS systems (uninterruptible power supply) for checkout systems
• Security & monitoring:
  • Intruder alarm systems (EMA)
  • Video surveillance systems (CCTV) for theft prevention
  • Article surveillance systems (EAS)
  • Fire alarm systems (BMA)
• Data & communication:
  • Network cabling for checkout systems, EC terminals, merchandise management
  • Telephone and internet connections
  • WLAN for customers and internal use
• Advertising & signage:
  • Connection of illuminated advertising and illuminated advertising signs
  • Installation of screens/digital signage
• Comfort:
  • Connection of air conditioning and ventilation systems
  • Electric roller shutters/awnings

• Power supply:
  • High-performance lines and cable ducts for large consumers
  • Connection of high-bay warehouses and conveyor technology (heavy current)
  • Installation of main distribution boards with high output
  • Connection of charging infrastructure for forklift trucks
• Lighting:
  • Efficient and powerful hall lighting (LED highbays)
  • Emergency and safety lighting in storage areas and escape routes
  • Lighting of loading ramps and outdoor areas
• Data & communication:
  • Robust network cabling (fibre optic, Cat.7) for warehouse management systems
  • WLAN for scanners and mobile devices (area-wide)
  • Telephone systems for offices and warehouses
• Security:
  • Comprehensive fire alarm systems (BMA) with special sensors for warehouses
  • Video surveillance (CCTV) for large areas
  • Access control systems for sensitive areas
  • Intruder alarm systems (EMA)
• Special requirements:
  • Connection of cold stores and deep-freeze cells
  • Installation of heating and ventilation systems
  • Preparation for emergency power generators

• Medical requirements (especially medical practices):
  • Medical power supply in accordance with VDE 0100-710 (IT systems for patient protection)
  • Potential equalisation in patient environments
  • Connection of medical devices (X-ray, ultrasound, laser) with special requirements
  • Emergency power supply for critical devices
• Hygiene & safety:
  • Splash-proof installations in damp rooms (operating theatres, treatment rooms)
  • Sterilisation areas with suitable electrics
  • Fire protection measures and smoke detectors
  • Video intercom systems for discreet access
• Lighting:
  • Bright, glare-free lighting for treatment rooms and work areas
  • Accent lighting for waiting rooms and reception areas (cosmetics/physio)
  • Operating theatre lights and special examination lights
• Communication & data:
  • Network cabling for practice software, transmission of findings, laboratory connection
  • Telephone system with multiple lines
  • Connection of cash register systems
  • WLAN for staff and patients
• Comfort:
  • Air conditioning and ventilation systems
  • Electrically adjustable loungers and chairs
  • Music systems for waiting areas

• Kitchen area (high requirements):
  • Power connections for kitchen appliances (cooker, oven, deep fryers, dishwashers, convection ovens)
  • Special fuse protection and RCDs for wet areas
  • Connection of exhaust air and ventilation systems
  • Heat and moisture-resistant installations
  • UPS for cash register systems
• Guest room & bar:
  • Diverse lighting scenarios (dimmable, mood-dependent)
  • Connection of music and sound systems
  • Sufficient sockets for cleaning equipment, coffee machines, etc.
  • Lighting for counters and buffets
• Security:
  • Fire alarm systems (BMA), especially in the kitchen
  • Emergency and safety lighting
  • Video surveillance (CCTV)
• Data & communication:
  • Network cabling for cash register systems, ordering terminals, printers
  • WLAN for guests and staff
  • Telephone systems
• Outdoor area (if available):
  • Lighting for terraces and outdoor areas
  • Sockets for heating elements or outdoor loudspeakers
  • Connection of awnings
• Energy efficiency:
  • Installation of motion detectors in adjoining rooms
  • Energy-optimised lighting (LED)

• High-performance supply:
  • Installation of medium and low-voltage switchgear
  • Connection of transformer stations
  • Laying high-power cables and busbar trunking systems
  • Compensation systems for power factor correction
• Machine connection:
  • Connection of machines and systems (three-phase current, direct current)
  • Installation of motor controls (frequency converters, soft starters)
  • Provision of sockets and connection points for machines
  • Industrial plugs and couplings (CEE plugs)
• Automation & control:
  • Wiring of PLC controls (programmable logic controllers)
  • Installation of sensors and actuators
  • Control cabinet construction and wiring
  • Fieldbus systems (Profibus, Profinet, EtherCAT)
• Safety:
  • Emergency stop systems and safety circuits
  • Fire alarm systems (BMA) and smoke extraction systems
  • Safety lighting and labelling of escape routes
  • Explosion protection installation in hazardous areas (ATEX)
  • Lightning and surge protection for systems and control units
• Data & communication:
  • Industrial network cabling (Ethernet/IP, fibre optics)
  • WLAN for mobile data acquisition and robotics
  • Connection to control systems (SCADA)
• Lighting:
  • Robust and efficient industrial lighting (high bay spotlights, LED industrial luminaires)
  • Specialised lighting for workstations and test areas
• Maintenance:
  • Inspections in accordance with DGUV V3 (device inspection, system inspection)
  • Maintenance and repair of electrical systems

• Lighting:
  • Efficient hall lighting (LED highbays) with high lumen output
  • Light control via motion detectors or twilight sensors to save energy
  • Illumination of rack aisles and picking areas
  • Emergency and safety lighting throughout the hall and on escape routes
  • Outdoor lighting for loading ramps and car parks
• Power supply:
  • Power connections for conveyor technology, high-bay warehouse, packing stations
  • Charging infrastructure for forklift trucks and industrial trucks (charging stations, CEE sockets)
  • Main distribution boards and sub-distribution boards for large areas
  • Connection of roller shutters and high-speed doors
• Data & communication:
  • Robust network cabling (often fibre optic backbone, Cat.6/7)
  • Comprehensive WLAN for mobile data capture (scanners, tablets)
  • Telephone and internet connections for offices and control centre
• Security:
  • Fire alarm systems (FAS) with extended functions (smoke aspiration systems in high-bay warehouses)
  • Video surveillance systems (CCTV) for storage areas, loading bays and outdoor areas
  • Intruder alarm systems (EMA)
  • Access control systems
• Comfort & workplace:
  • Sockets for workstations, packing stations and offices
  • Connection of heating and ventilation systems

Lighting:

• Installation of moisture-proof luminaires and robust LED luminaires in car park levels
• Sensor-based control of lighting to save energy (presence detectors)
• Emergency and safety lighting for escape routes and stairwells

Security & surveillance:

• Laying the cabling for video surveillance systems
• Installation of gas warning systems (CO warning systems) with automatic ventilation control
• Fire alarm systems (BMA) and smoke extraction systems
• Integration of barrier systems and payment systems

Ventilation:

• Installation of ventilation systems and fans
• Connection of the ventilation to the CO warning system

Charging infrastructure:

• Installation of wall boxes and charging stations for electric vehicles
• Laying the power supply lines for the charging stations

Safety in the foreground:

• Fire alarm systems (BMA) and smoke extraction systems in accordance with DIN
• Emergency and safety lighting in escape routes, classrooms and sports halls
• Lightning protection and surge protection for sensitive technology
• Residual current circuit breakers (RCDs) in all areas, especially in wet rooms and kitchens
• Alarm systems and video surveillance (CCTV) for sensitive areas

Media and communication technology:

• Comprehensive network cabling (LAN) for classrooms, offices, IT rooms
• WLAN infrastructure for educational facilities
• Connection of interactive whiteboards, projectors, PCs
• Installations for digital boards
• Media control systems in auditoriums/halls
• Telephone systems and intercoms

Classrooms & functional areas:

• Sufficient sockets and power circuits (e.g. for computer rooms, natural sciences)
• Flexible lighting systems (dimmable, daylight-dependent)
• Connection of kitchen appliances in teaching kitchens
• Acoustic and sound systems in assembly halls, gymnasiums

Accessibility:

• Installation of emergency call systems in barrier-free toilets
• Induction loops for hearing aid users in event rooms

Outdoor areas:

• Lighting for playgrounds, sports fields, paths
• Sockets for outdoor events

Energy efficiency:

• Presence detectors for lighting in classrooms, corridors, toilets
• Conversion to LED lighting
• Connection of photovoltaic systems
• E-charging stations (wall boxes) for vehicles

Patient and resident rooms:

• Call systems (nurse call systems) with pull-cord and pear push-buttons, also in the bathroom
• Sufficient and easily accessible sockets (also behind beds)
• Light switches by the bed and main light switch at the entrance
• TV, radio and telephone connections
• Night light and orientation lighting

Medical areas (if available):

• Medical power supply in accordance with VDE 0100-710 (if treatment rooms exist)
• Potential equalisation
• Connection of medical devices

Safety:

• Fire alarm systems (BMA) with direct connection to the fire brigade
• Emergency and safety lighting in all areas, escape routes, stairwells
• Lightning protection and surge protection
• Video surveillance (CCTV) in public areas (optional, with data protection)
• Access control systems for sensitive areas

Communal and staff areas:

• Lighting in corridors (with motion detectors and dimming function if required)
• Lighting for dining rooms, lounges, therapy rooms
• Sockets for cleaning equipment and technical aids
• Connection of laundry machines and kitchen appliances

Communication & data:

• Internal telephone systems and emergency call communication
• Network cabling for administration software, care documentation
• WLAN for residents and staff
• Intercom systems at main entrances

Accessibility:

• Installation of barrier-free call systems and buttons
• Electric door openers and sliding doors
• Induction loops in communal areas

Energy efficiency:

• Presence and motion detectors
• LED lighting
• Centralised control of heating and ventilation

Choice of materials:

• Use installation material that visually matches the monument (e.g. fabric-covered cables, historical switches and sockets)
• Search for lights and add-on parts suitable for listed buildings

Installation technology:

• Reduction of visible cables and switches to a minimum
• Laying cables in existing ducts or inconspicuously in corners and behind panelling
• Avoiding major interventions in the building fabric (drilling, slitting)
• Use of surface-mounted installations with a historic look

Cooperation:

• Close coordination with the monument protection authority
• Preparation of a detailed installation concept, which must be approved by the authorities
• Work in consultation with restorers and architects

Interior lighting:

• Planning and installation of general, accent, workplace and emergency lighting
• Installation of recessed, surface-mounted, pendant and track lighting
• Installation of lighting control systems (dimmable, scene programming, presence detectors)

Outdoor lighting:

• Installation of façade and architectural lighting
• Installation of floodlighting systems for sports fields or car parks
• Illumination of terraces, gardens and pavements

Path and square lighting:

• Laying underground cables to the lighting points
• Installation of path lights, bollards and pole lights
• Connection of lighting to twilight switches and timers

Safety & efficiency:

• Use of energy-efficient LED lights
• Use of weather-resistant and robust lights
• Integration of emergency lighting for escape routes

Emergency lighting systems:

• Installation of escape sign luminaires (escape route signage)
• Installation of anti-panic luminaires for large areas
• Installation of fire-resistant cables (E30/E90)
• Installation of centralised battery systems or individual battery luminaires
• Connection to a central monitoring system
• Regular testing and maintenance of the system

Emergency power generators:

• Installation of the generator set in a suitable location
• Laying the supply line and the exhaust pipe
• Connection to the central automatic transfer switch (ATS)
• Wiring of the control and monitoring of the genset
• Integration into the building management system

Lighting:

• Installation of automatic staircase controllers (time switches) for time-controlled lighting
• Installation of motion detectors or presence detectors for needs-based switching
• Installation of push-buttons with orientation light
• Connection and installation of ceiling and wall lights in stairwells and corridors
• Installation of emergency lighting for escape routes

Intercom systems:

• Installation and wiring of the central door station (external unit) with bell buttons
• Installation of the home stations (intercom) in the individual residential units
• Wiring of door openers and door opener buttons
• Installation of video intercom systems with monitors
• Installation and configuration of access control systems (RFID, code lock)

Security:

• Installation of smoke alarms in stairwells (depending on state building regulations)
• Integration of letterbox and nameplate lighting
• Connection to main distribution board with appropriate protection

Modernisation:

• Replacement of the old stairwell installation (intercom system, lighting) in accordance with current standards

Gate controls (sliding gates, swing gates):

• Laying the power supply cable to the gate operator (operator pillar)
• Installation of the operator and control unit
• Installation of safety light barriers and sensors for obstacle detection
• Installation of radio receivers for hand-held transmitters
• Connection of key switches, code locks or intercom systems

Automatic doors (sliding doors, revolving doors):

• Installation of the power supply for the door drive
• Installation of radar sensors or motion detectors for opening control
• Installation of safety sensors for anti-trap protection
• Wiring of control components and switches

Safety:

• Integration of emergency stop switches and emergency release systems
• Protection of the circuits with residual current circuit breakers

Planning & consulting:

• Checking the grid connection power and the existing electrical installation
• Registration of the charging system with the grid operator
• Selection of a suitable wallbox (type 1/2, charging capacity, intelligent functions)

Installation:

• Installation of a separate circuit in the sub-distribution board with circuit breaker and residual current circuit breaker (RCD type B)
• Laying the power supply line to the planned installation position of the wallbox
• Mounting the wallbox on a wall or stand
• Professional connection and commissioning

Load management:

• Installation of load management systems for multiple charging points
• Integration into the home energy management system (smart home)

Public/commercial charging infrastructure:

• Installation of charging points with calibration law compliance
• Connection to backend systems for billing and administration

Safety:

• Ensuring compliance with all safety norms and standards

Electrical supply:

• Laying the power supply line to the ventilation unit or to the outdoor unit of the air conditioning system
• Installation of separate circuits and fuses for the appliances
• Installation of main switches or maintenance switches near the appliance

Control & regulation:

• Installation of the control unit (thermostat, control panel)
• Wiring of sensors (temperature, humidity, CO2 sensor)
• Connection to building management systems (BMS) or smart home systems
• Installation of pumps for condensation drainage

Connection:

• Connection of fans, heat exchangers and filters
• Wiring the controls for dampers and valves

Safety:

• Integration into the fire protection concept (fire dampers)
• Emergency stop functions for ventilation systems

Wiring:

• Laying the power supply cable to the blind, roller shutter or awning motors
• Installation of the control lines for buttons and sensors

Control system:

• Installation of wall switches (individual or group switching)
• Installation of a centralised control system (e.g. in the distribution board)
• Integration of sensors (wind, sun, rain sensors)
• Programming of time controls and automation scenarios

Integration:

• Connection to smart home systems (KNX, Loxone, wireless standards)
• Setting up remote controls and app control

Roof installation:

• Mounting the substructure (rails) on the roof
• Laying and fastening the solar modules
• Laying the solar cables from the modules to the inverter

Commissioning:

• Installation of the inverter (inverter)
• Wiring the DC side (direct current) of the solar modules to the inverter
• Wiring the AC side (alternating current) from the inverter to the meter cabinet

Connection:

• Attachment of a feed-in point to the grid operator meter
• Replacement of the meter cabinet (second meter for self-consumption if necessary)
• Installation of overvoltage protection (AC/DC)

Storage systems:

• Installation and connection of an electricity storage system

Monitoring:

• Configuration of the monitoring systems (smart meter, app connection)

Preparation:

• Obtain authorisation and plan information (where are other cables located?)
• Excavation of a trench to the prescribed depth (at least 60 cm below traffic areas, 80 cm below paths, DIN VDE 0100-520)
• Backfilling of a sand bed in the trench

Laying:

• Laying the underground cable (typically NYY-J) in the sand bedding
• Attachment of a route warning tape approx. 30 cm above the cable
• Laying empty conduits at critical points (crossings with paths, driveways)

Connection:

• Creation of professional cable terminations
• Connection to distributors, outdoor lights, garages, etc.
• Installation of sleeves when connecting cables

Documentation:

• Creation of a site plan with the exact position of the laid cable