The Only System That Knows BS 7671 Table 41.4 by Heart
This isn't just digital forms—it's the industry's first compliance document system that enforces BS 7671, BS 5839, and MCS standards before certificates can be issued. Auto-lookup Zs limits, validate test results, capture GPS-tagged signatures, and maintain immutable audit trails. Your engineers can't accidentally issue a non-compliant certificate.
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Key Features
Everything you need to manage compliance and stay ahead of regulations
BS 7671 Zs Auto-Lookup & Validation
Engineer enters Zs = 1.2Ω for B32 MCB? System auto-looks up BS 7671 Table 41.4 limit (1.37Ω), applies temperature correction (×0.8 = 1.10Ω), shows status: ⚠️ WARNING (compliant but close to limit). Margin: -0.10Ω. No manual table lookups, no calculator needed.
BS 7671 Zs Auto-Lookup & Validation
Prevents Non-Compliant Certificates
Can't issue EIC with IR <1MΩ. Can't issue EICR with C1/C2 observations marked "Satisfactory". Can't issue Solar PV with Voc/Isc >5% deviation. System enforces regulations—engineers can't bypass validation.
Prevents Non-Compliant Certificates
Immutable Audit Trail
Every certificate tracks who changed status, when, and why. Voiding requires written reason (stored permanently). Can't delete, only void. Superseding creates linked chain. For legal/insurance: complete chain of custody proving what was tested, by whom, and when.
Immutable Audit Trail
GPS-Tagged Digital Signatures with Forensic Evidence
Captures GPS coordinates (proves engineer on-site), IP address, exact timestamp, device info, signature image. BS 7671 EIC requires 3 signatures (Designer, Constructor, Inspector)—system enforces all three before issue. Dispute-proof documentation.
GPS-Tagged Digital Signatures with Forensic Evidence
Defect-to-Remediation Tracking
EICR C2 defect recorded → £450 quote generated → Job #1234 created → Minor Works remediation cert issued (linked back to original EICR). Track defects from discovery through completion. Prove to insurers/regulators you followed up.
Customer Acknowledgment Portal
Secure token-based access (no login needed). Customer views certificate, downloads PDF, digitally acknowledges receipt. Timestamp of viewing/acknowledging tracked in database. Can't claim "never received cert"—you have proof they viewed it on [date].
Job → Certificate Auto-Population
Customer details, site address, equipment serial numbers, contractor credentials—all pre-filled from job record. Engineers start 50% done. No double data entry between job management and certificates.
9 Certificate Types, All Standards-Compliant
EIC, EICR, Minor Works (BS 7671:2018+A2:2022). Fire Alarm Service/Commissioning (BS 5839-1:2025). Emergency Lighting (BS 5266-1:2016). PAT (IET Code 5th Ed). Solar PV (BS EN 62446-1:2016, MCS). Extinguisher (BS 5306-3:2017). Every type matches official model forms.
Retest Interval Tracking
EICR due in 5 years? Fire alarm service due in 6 months? System tracks inspection intervals per certificate type. Dashboard flags upcoming retests. Never miss compliance deadline or recurring revenue opportunity.
Multi-Party Signature Enforcement
BS 7671 certificates require Designer, Constructor, Inspector signatures. System won't allow issue without all required parties signing. Each signature captures GPS, timestamp, device. Complete accountability for who certified what.
How It Works
Get started in minutes with our intuitive workflow
Job Complete, Certificate Pre-Filled
Mark job complete. Create certificate—customer details, site address, equipment serial numbers, contractor credentials all auto-populate from job record. Engineers start 50% done.
Enter Test Results with Auto-Validation
Add circuits with Zs, IR, RCD trip times. System auto-looks up BS 7671 Table 41.4 limits, applies temperature correction, shows pass/fail status with margins. Fire certs validate zone counts and device tests. Solar PV checks Voc/Isc within ±5% expected values.
Log Defects (EICR)
Found C1/C2 observations? Log defects with photos, severity ratings. System automatically marks EICR as "Unsatisfactory" if C1/C2 present. Generate remedial quote directly from defects. Track remediation job to completion.
Sign with GPS-Tagged Signatures
Add required signatures (Designer, Constructor, Inspector for BS 7671 certs). Each signature captures GPS coordinates, IP address, timestamp, device info. System validates all required fields complete before allowing issue. Certificate number auto-assigned.
Customer Portal Delivery & Acknowledgment
Share secure portal link (no login needed). Customer views certificate, downloads PDF, digitally acknowledges receipt. System tracks viewing/acknowledgment timestamps. Complete proof of delivery for disputes.
Job Complete, Certificate Pre-Filled
Mark job complete. Create certificate—customer details, site address, equipment serial numbers, contractor credentials all auto-populate from job record. Engineers start 50% done.
Enter Test Results with Auto-Validation
Add circuits with Zs, IR, RCD trip times. System auto-looks up BS 7671 Table 41.4 limits, applies temperature correction, shows pass/fail status with margins. Fire certs validate zone counts and device tests. Solar PV checks Voc/Isc within ±5% expected values.
Log Defects (EICR)
Found C1/C2 observations? Log defects with photos, severity ratings. System automatically marks EICR as "Unsatisfactory" if C1/C2 present. Generate remedial quote directly from defects. Track remediation job to completion.
Sign with GPS-Tagged Signatures
Add required signatures (Designer, Constructor, Inspector for BS 7671 certs). Each signature captures GPS coordinates, IP address, timestamp, device info. System validates all required fields complete before allowing issue. Certificate number auto-assigned.
Customer Portal Delivery & Acknowledgment
Share secure portal link (no login needed). Customer views certificate, downloads PDF, digitally acknowledges receipt. System tracks viewing/acknowledgment timestamps. Complete proof of delivery for disputes.
Built for Your Role
Tailored benefits for every member of your team
For Business Owners
- Reduce liability—certificates validated against BS 7671/BS 5839 before issue, engineers can't bypass limits
- Prove compliance—complete audit trail with GPS-tagged signatures for insurance claims and HSE investigations
- Save time—auto-populate certificates from job data, no double entry
- Track remediation—defect-to-quote pipeline ensures C1/C2 observations don't fall through cracks
- Customer acknowledgment proof—can't claim "never received cert", you have timestamp evidence
- Unified platform—CRM + Jobs + Compliance certs in one system, not three separate tools
For Compliance Officers
- Enforced standards—engineers can't bypass Zs limits or skip required fields, system blocks non-compliant issue
- Audit-ready—every certificate has status history showing who created/edited/issued/voided and when
- Immutable records—voiding requires written reason, can't delete certificates, complete chain of custody
- Multi-party signatures—BS 7671 certs enforce Designer/Constructor/Inspector signatures with GPS/timestamp
- Customer portal tracking—digital acknowledgment with viewing timestamps for proof of delivery
- Retest tracking—EICR/Fire Alarm service intervals flagged automatically, never miss compliance deadline
For Field Engineers
- Auto-lookups—no more flipping through BS 7671 Table 41.4, system knows Zs limits by MCB type/rating
- Pass/fail guidance—enter Zs = 1.2Ω, system shows limit 1.37Ω, corrected 1.10Ω, status: ⚠️ WARNING with margin
- Mobile-first—complete certificates on-site from tablet/phone, no evening paperwork
- Draft mode—save partial work, complete later, no lost data if signal drops
- GPS signatures—sign on-site, GPS proves you were there, dispute-proof documentation
- Defect logging—take photo of faulty RCD, log C2, remedial quote generates automatically
What Makes OpsCel Different?
Compare our features with traditional job management software
| Feature | OpsCel | Others |
|---|---|---|
| BS 7671 Zs auto-lookup (Table 41.4 + temp correction) | No | |
| Pass/fail validation (prevents non-compliant certs) | Some | |
| Job → Certificate auto-fill (no double entry) | No | |
| Multi-party signatures (Designer/Constructor/Inspector) | Some | |
| GPS-tagged signatures (forensic evidence) | No | |
| Immutable audit trail (can't delete, voiding requires reason) | Some | |
| Defect → Quote → Job → Remediation cert pipeline | No | |
| Customer acknowledgment portal (proof of delivery) | Some | |
| CRM + Jobs + Certs unified (not 3 separate tools) | No |
Frequently Asked Questions
Everything you need to know about this feature
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