Veep Energy – PEI Compliance Practical Guide (I.S. 10101:2024) #

This document provides a practical on-site checklist, common red-flag designs to avoid, and an overview of how Safe Electric complaints typically unfold for Prosumer Electrical Installations (PEIs). It is intended for internal use by Veep Energy engineers and project managers.

1. On-Site PEI Compliance Checklist #

– Confirm installation is classified as a Prosumer Electrical Installation (PV, battery, EV, generator present).

– Verify existing installation suitability (Clause 134.1.9).

– Confirm PEN connection (neutralising link) present and secure.

– Verify earth electrode exists and resistance acceptable (50V / I∆n).

– Confirm RCD protection on all circuits supplied in island mode.

– Test RCDs in both grid-connected and island modes.

– Confirm MCB/fuse ratings appropriate for both modes.

– Verify neutral-earth reference present in island mode.

– Confirm load shedding or essential loads board implemented where required.

– Verify automatic changeover switch isolates all supplies correctly.

– Check main isolators provided for each supply within 2m of supply point.

– Confirm battery and inverter locations comply with ventilation and fire safety requirements.

– Avoid attic installations unless manufacturer-approved and fire detection provided.

– Confirm PV DC side Class II or equivalent; bonding as required.

– Verify warning labels and isolation signage installed and legible.

– Test functional operation of island mode and reversion to grid.

– Complete and retain all test results and commissioning documentation.

– Issue Cert No. 3 confirming compliance with I.S. 10101.

2. Red-Flag Designs to Avoid #

– PV or battery systems capable of islanding without full RCD protection.

– Automatic changeover switches that allow PV to energise the installation during generator mode.

– No verified earth electrode in installations with island capability.

– Assuming MCBs/fuses will provide fault protection in island mode.

– Batteries or inverters installed in unventilated attic spaces.

– No load shedding on single-phase backup systems feeding large loads.

– Unlabelled or unclear isolation points for multiple supplies.

– Diverter switches installed in airing cupboards or enclosed spaces.

– Failure to test RCDs and ADS in island mode.

– Signing Cert No. 3 without full verification of existing installation.

3. How Safe Electric Complaints Typically Unfold #

– Complaint triggered by loss of supply, fire incident, or RCD nuisance tripping.

– Safe Electric requests installation details, certs, and schematics.

– Inspection focuses on earthing, PEN integrity, RCD operation, and island mode behaviour.

– Failure to demonstrate ADS effectiveness in island mode escalates issue.

– REC asked to provide test results for earth electrode and RCDs.

– Non-compliance may result in corrective works notice or enforcement.

– In serious cases, certs may be challenged and REC accountability enforced.

Conclusion #

PEIs represent a significant increase in design and compliance responsibility for RECs. This guide should be used as a minimum internal standard for Veep Energy projects involving PV, batteries, or backup operation.