Charger RCD Tripping Investigation
John Smith
10 February 2026
Summary
Investigated issues with the charger tripping RCD. Temporary fix put in place while further actions are scheduled after quote approval.
Areas Inspected
Supply assessment
OKMonitor over the next week as discussed with John.
Earthing adequacy
OKChecked and found adequate for current load.
RCD testing
ALARM- Type A RCD nuisance with EV load; warm RCD.
RCD is warm indicating potential nuisance tripping under EV load.
Charger unit
OKTemporary fix implemented; further action to follow.
Cable routing
OKResealed isolator box with a cable grommet.
Inspection
OKInspection needed for isolator and cable tails as part of further action.
Actions Done On Site
- Checked supply assessment, earthing adequacy, and RCD testing.
- Implemented temporary fix for RCD issue.
Actions for Service Provider
- Send quote for Type B RCBO for EV circuit, inspection of EV isolator and tails.
Actions for Client
- Keep an eye on the supply assessment over the next week and report any changes.
Quote Required
Need for Type B RCBO and inspections after RCD nuisance.
| Item | Quantity | Priority |
|---|---|---|
| Type B RCBO for EV circuit | 1 | High |
| Inspection of EV isolator | 1 | Medium |
| Inspection of tails | 1 | Medium |
Invoice Items
Work completed including call-out and resealing.
| Item | Quantity |
|---|---|
| Call-out and labour for resealing isolator box with cable grommet | 1 |
Photos
