Installation inspection is prescribed by law. It’s regulated by the Ordinance on Low-voltage Installations (NIV). With our installation check, we ensure your electrical installations and equipment are in perfect working order and that there is no danger to people or property.
Advice
Email
kontrolle@ewz.ch
Information for electricians and inspection companies
Documents
Work regulations WVCH-CH 2021 (in German)
PDF 1.4 MB
Special provisions from ewz (in German)
PDF 630 kB
Training documentation from the Electricians’ and Planners’ Conference 2023 (in German)
PDF 18.2 MB
Training documentation from the Electricians’ and Planners’ Conference 2022 (in German)
PDF 21.6 MB
Reporting
Information sheets and forms
Documents
Work inspection and meter installation procedure (in German)
PDF 30 kB
Documents
Disassembly of tariff equipment (in German)
PDF 110 kB
Documents
Direct measurement equipment with distribution terminals (in German)
PDF 260 kB
Documents
Information sheet – transformer test terminals (in German)
PDF 60 kB
Documents
On-site requirements for remote meter reading schematics (in German)
PDF 2.1 MB
Family home with an external junction box VMH440 (in German)
PDF 200 kB
MDB with up to 30 meters VMH441 (in German)
PDF 520 kB
MDB more than 30 meters VMH442 (in German)
PDF 750 kB
Remote MDB VMH443 (in German)
PDF 650 kB
Documents
Diagram – TRE with ZFA and/or TRE EEA (in German)
PDF 30 kB
Diagram – EEA storage 3–30 kVA (in German)
PDF 30 kB
Diagram – EEA storage >30 kVA (in German)
PDF 40 kB
Diagram – EEE with 1 WR 30–100 kVA (in German)
PDF 40 kB
Diagram – e-mobility control (in German)
PDF 30 kB
Diagram – boiler ≥ 100 l with night-time clearance (in German)
PDF 30 kB
Diagram – boiler ≥ 100 l without night-time clearance (in German)
PDF 30 kB
Diagram – WP UNT and/or load shedding (in German)
PDF 30 kB
Documents
Information sheet – e-mobility (in German)
PDF 210 kB
Documents
2023 fees (in German)
PDF 370 kB
Grisons distribution grid
Documents
Form – installation notification, equipment order for measurement and control equipment GR (in German)
PDF 410 kB
Form – installation notification GR (in German)
PDF 300 kB
Documents
Form – Technical connection request (in German)
PDF 950 kB
Documents
Proof of safety (SiNa) (in German)
PDF 90 kB
Documents
Diagram – TRE with ZFA and/or TRE EEA (in German)
PDF 30 kB
Diagram – EEA storage 3–30 kVA (in German)
PDF 30 kB
Diagram – EEA storage >30 kVA (in German)
PDF 40 kB
Diagram – EEE with 1 WR 30–100 kVA (in German)
PDF 40 kB
Diagram – e-mobility control (in German)
PDF 30 kB
Diagram – boiler ≥ 100 l with night-time clearance (in German)
PDF 30 kB
Diagram – boiler ≥ 100 l without night-time clearance (in German)
PDF 30 kB
Diagram – WP UNT and/or load shedding (in German)
PDF 30 kB
Documents
Measurement and inspection protocol (in German)
PDF 170 kB
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