Electrical design and certification, from the calculators up.
Pro turns the free SparkBench calculators into the deliverables a UK contractor issues on a job: single cable calculations, BS 7671 distribution board schedules, and EIC, EICR and Minor Works certificates, all as branded PDFs under your own logo.
Single cable calculation
Check a circuit against BS 7671, loading, volt drop, Zs and adiabatic, and export a report.
// SchedulesDistribution board schedules
A validated board schedule with live checks, exported to PDF and CSV.
// CertificatesEIC, EICR & Minor Works
Model-form certificates with observations and captured signatures, immutable once issued.
// ProjectsSaved projects & branded PDFs
File calcs, boards and certificates per job and export them under your logo and scheme.
// ComplianceCompliance tracker
Calibration, cards, insurance and training with traffic-light status and reminder emails.
// TeamStaff compliance matrix
On the Team plan, track every engineer's competence and renewals in one place.
Free vs Pro
| Feature | Free | Pro |
|---|---|---|
| Every UK electrical calculator | ✓ | ✓ |
| Save calculations into projects | – | ✓ |
| Branded PDF export with your logo | – | ✓ |
| Single cable calculation report | – | ✓ |
| BS 7671 distribution board schedules | – | ✓ |
| EIC, EICR & Minor Works certificates | – | ✓ |
| Compliance tracker with reminders | – | ✓ |
| Staff compliance matrix | – | Team |
Solo £6/month or £60/year · Team £15/month or £150/year · prices include VAT · cancel anytime
Built for UK practice
Everything is sized around BS 7671 and the way circuits are actually designed in the UK, not US wiring. The validation engine flags anything it is not certain of rather than guessing, so a competent person always makes the final call. Certificates are statutory documents that must be signed by the competent person responsible; SparkBench produces the paperwork, it does not certify the installation.
SparkBench is a product of Intrelec Ltd, registered in England & Wales no. 10183959. Invoices are issued by Intrelec Ltd.