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BS 5839-6 Grade C/D/F Combined Certificate

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Sample Grade C/D/F Combined certificate

Sample BS 5839-6 Grade C/D/F Combined Certificate certificate created with CertBox, showing the professional PDF layout with system grade (c/d/f) and category, detector schedule with locations, correct positioning per bs 5839-6

Sample Grade C/D/F Combined with fictional data. All personal details shown are fake.

A Grade C/D/F Combined Certificate covers the design, installation, and commissioning of simpler domestic fire alarm systems. Grade D (mains-powered interlinked detectors) is the most common domestic requirement. Grade C adds a control panel, and Grade F uses battery-powered detectors.

BS 5839-6:2019+A1:2020, Building Regulations Approved Document BValid: One-off (annual testing by householder)

What it covers

System grade (C/D/F) and category
Detector schedule with locations
Correct positioning per BS 5839-6
Interlinking verification
Individual detector activation test
Battery test for Grade F

Who needs a Grade C/D/F Combined?

Electricians installing domestic detectors

Landlords

Building control

Homeowners after renovation

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Frequently asked questions about Grade C/D/F Combined

What is the difference between Grade A, C, D, and F?

Grade A uses BS EN 54 components with a control panel (commercial-style). Grade C uses detectors with central control equipment and a standby supply. Grade D uses mains-powered detectors, split by battery type into D1 (tamper-proof, non-replaceable battery) and D2 (user-replaceable). Grade F uses battery-only detectors, split into F1 (sealed for life) and F2 (user-replaceable). The 2019 revision withdrew the former Grades B and E.

Which grade do I need?

Most standard homes use mains-interlinked detectors; rented and higher-risk dwellings increasingly require Grade D1 with a tamper-proof sealed battery. Grade A or C is typically specified for HMOs and higher-risk dwellings. Grade F (battery-only) is generally only acceptable where no mains supply is available or as a temporary measure.

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