Het hoofdstuk Elektronische installaties betreft het geheel van leveranties en werkzaamheden nodig voor het in het werk brengen en bedrijfsgereed maken van installaties voor de opwekking, omzetting, distributie en afname van elektrische energie alsmede gemeenschappelijke leidingwegen, aardings- en bliksembeveiligingsvoorzieningen.
| Naam | Specialisatie | Plaats | 
|---|---|---|
| Welvaarts Elektro B.V. | 00.AI 00.AR 00.IB 00.OG 70.00 70.31 70.32 70.33 70.34 70.35 70.41 70.43 70.51 70.53 70.81 70.87 75.00 75.45 75.46 75.51 78.00 75.a 70.00 54.70 00 00.AB 00.AI 00.BB 70.00 70.10 70.11 70.12 70.13 70.14 70.15 70.20 70.21 70.30 70.31 70.32 70.33 70.40 70.41 70.42 70.43 70.44 70.45 70.46 70.47 70.50 70.51 70.52 70.53 70.54 70.55 70.56 70.57 70.60 70.61 70.62 70.63 70.64 70.65 70.70 70.71 71 71.00 71.10 71.11 71.12 71.20 71.21 71.22 71.23 71.30 71.31 71.32 71.33 00 71.34 71 71.35 71.31 71.36 71.32 71.37 71.33 71.40 71.34 71.41 71.35 71.42 71.36 71.43 71.37 72 71.40 72.00 71.41 72.10 71.42 72.11 71.43 72.12 72 72.20 72.00 72.21 72.10 72.22 72.11 72.40 72.12 72.41 72.20 72.42 72.21 72.43 72.22 72.50 72.40 72.51 72.41 72.52 72.53 72.42 72.54 72.43 72.55 72.50 72.60 72.51 72.70 72.52 73 72.53 73.00 72.54 73.10 72.55 73.11 72.60 73.12 72.70 73.13 73 73.14 73.00 73.20 73.10 73.21 73.11 73.22 73.12 73.23 73.13 73.24 73.14 73.25 73.20 73.26 73.21 73.30 73.22 74 73.23 74.00 73.24 74.10 73.25 74.11 73.26 74.12 73.30 74.13 74 74.14 74.00 74.20 74.10 74.21 74.11 74.22 74.12 74.23 74.13 74.24 74.14 74.30 74.20 74.31 74.21 74.32 74.22 74.33 74.23 74.34 74.24 74.40 74.30 74.41 74.31 74.42 74.32 74.43 74.33 74.44 74.34 74.45 74.40 74.50 74.41 74.60 74.42 74.70 74.43 74.80 74.44 75 74.45 75.00 74.50 75.10 75.11 74.60 75.20 74.70 75.21 74.80 75.30 75 75.31 75.00 77 75.10 77.00 75.11 77.10 75.20 77.20 75.21 77.30 75.30 77.40 75.31 77.41 77 77.42 77.00 77.43 77.10 77.44 77.20 77.50 77.30 77.51 77.40 77.60 77.41 77.61 77.42 77.62 77.43 77.63 77.44 77.50 77.51 77.60 77.61 77.62 77.63 43.21 81.21 | Vught | 
| Wemmers Installatiebedrijf B.V. | 50.00 51.00 52.00 53.00 54.00 70.00 75.00 75.a 55.00 54.a 56.00 60.00 61.00 62.00 68.00 55.00 60.00 61.00 62.00 70.00 43.22 81.21 | Bleskensgraaf | 
| Werkhuizen Albert Castelein (ElektroTechniek Castelein) | 70.00 70.00 GH.09 70.00 70.30 70.20 70.10 70.40 70.50 70.60 70 70.71 71.10 71.20 71.30 71 71.40 72.10 72.50 72 72.60 73.10 73.20 73 73.30 74.00 74.10 74.20 74.30 74.40 74.50 74.70 74.60 74 74.80 75.00 75.20 75.10 75 75.30 77.30 7 T7.74 7 T7.76 | WAREGEM | 
| Wesemann Projects B.V. | 70.31 02.c | Rotterdam | 
| Wesley Keeris Beheer B.V. | 50.00 51.00 52.00 53.00 54.00 55.00 70.33 43.22 | Geldrop | 
| Wespot B.V. | 70.00 70.33 | Borne | 
| Wesso Elektro Wijchen B.V. | 70.00 75.00 54.00 70.00 43.21 | Wijchen | 
| WESTELEC NV | 70.00 70.00 77.10 77.20 77.30 77.40 77.50 70.50 74.10 74.30 27.70 70.00 43.21 77.00 71.00 74.00 | IEPER | 
| Westenbrink Electro B.V. | 75.a 70.81 75.52 70.00 75.00 43.21 | Goor | 
| Westerdijk B.V. | 70.00 33.33 55.00 50.00 51.00 52.00 53.00 54.00 60.00 61.00 43.22 43.21 | Delfzijl | 
| Westerveld Elektrotechniek | 70.00 75.00 70.00 43.21 | Zeist | 
| Westland Infra Netbeheer B.V. | 55.00 70.00 55.00 70.00 | Poeldijk | 
| Westreenen | 78.00 70.00 70.82 70.81 70.78 70.75 70.74 70.73 70.72 70.71 70.65 70.64 70.63 70.62 70.52 70.51 70.42 70.41 75.00 75.52 78.41 43.21 | Opheusden | 
| Wetec B.V. | 43.21 70.33 60.51 70.00 54.70 75.51 | Stellendam | 
| Wibe Group | 00.AI 00.AR 02.j 70.00 70.41 | Hoorn | 
| Wiechers Wonen Ommen | 70.81 | Ommen | 
| Wieland Electric GmbH | 70.00 053 053.00 | Bamberg | 
| Wieldraaijer Installatietechniek | 70.00 75.00 61 43.21 43.22 | Oosterwolde | 
| Wielinga Slapen | 70.81 | Leeuwarden | 
| Wierda Projecttechniek BV | 78.00 75.a 70.00 70.51 70.81 70.33 75.45 75.46 75.00 75.51 54.70 54.b 70.72 70.52 70.82 61 62 63 43.21 | Emmeloord | 
| Wierdense Metaal Veredeling B.V. | 70.00 75.00 70.00 | Rijssen | 
| Wierenga Bliksembeveiliging | 70.87 43.21 | Goor | 
| WIHA Brandpreventie B.V. | 45.41.a 46.32.a 43.99 51.82 31.31 44.31 21.85 23.85 26.81 70.43 65.1 65.10 | Doetinchem | 
| Wijco Technics B.V. | 50.00 51.00 52.00 53.00 54.00 56.00 60.00 62.00 68.00 61.00 61.12 60.12 55.00 62.12 70.00 70.31 70.32 70.33 70.34 70.35 70.41 70.43 70.51 70.53 70.81 70.87 75.00 75.45 75.46 75.51 78.00 75.a 55.00 60.00 61.00 62.00 70.00 43.22 | 7575 BM | 
| Wijdeven Inductive Solutions B.V. | 78.00 70.00 70.31 70.51 70.72 70.52 | OIRSCHOT |