Worksafe Electrical Rule Review 2025: RCD Changes and Risks
WorkSafe’s 2025 amendment to the Electricity (Safety) Regulations 2010 removes mandatory RCD protection for 16A sockets — a move electrical inspectors call a “lethal” risk. This review examines the controversy, the compliance timeline, and what it means for homes and businesses.
Effective date: 13 November 2025 | Compliance deadline: 12 November 2026 | Risk level (inspectors): Lethal | Electricians affected: ≈25,000
What Changed
- Removal of mandatory RCD protection for 16A sockets — WorkSafe NZ
- Amendments to Electricity (Safety) Regulations 2010 effective 13 Nov 2025 — NZ Legislation
- Compliance optional until 12 Nov 2026 — WorkSafe NZ
Why It Matters
- Electrical inspectors call it a “lethal” risk — RNZ
- Homes and businesses exposed to increased electrocution danger
- Affects all new and modified 16A installations — WorkSafe NZ
Who Is Affected
- Electricians and electrical workers in New Zealand
- Building owners and managers
- Homeowners doing renovation or adding 16A sockets
Key Standards
- AS/NZS 3000:2018 Wiring Rules — Standards NZ
- Electricity (Safety) Regulations 2010 — NZ Legislation
- WorkSafe guidance documents — WorkSafe NZ
| Regulation | Value |
|---|---|
| Regulation | Electricity (Safety) Regulations 2010 |
| Amended effective date | 13 November 2025 |
| Compliance grace period | Until 12 November 2026 |
| Socket type affected | 16A socket outlets |
| Risk classification (per inspectors) | Lethal |
| Alternate standard | AS/NZS 3000:2018 |
What are the latest wiring rules?
Overview of AS/NZS 3000:2018 and the 2018 amendments
AS/NZS 3000:2018 is the current standard for electrical installations in New Zealand and Australia. The Electricity (Safety) Regulations 2010 were amended effective 13 November 2025. WorkSafe’s rule change removes mandatory RCD protection for 16A sockets. The amendment does not alter the wiring rules themselves but changes the regulatory requirement to comply with certain clauses. Electricians must continue to follow AS/NZS 3000:2018 for design and installation, but the compliance pathway for 16A sockets has shifted.
The effect: under the new regulations, a 16A socket no longer needs a fixed RCD unless the installation is subject to other requirements (e.g., commercial kitchens, construction sites). WorkSafe NZ confirms the change.
“Removing mandatory RCD protection from 16A sockets introduces a lethal risk of electrocution, especially in workshops and industrial settings.” — Electrical inspector, quoted by RNZ
The implication: The new rules allow 16A sockets to be installed without RCD protection, shifting responsibility to users to provide portable RCDs or rely on existing circuit protection. WorkSafe says this aligns with international practice, but inspectors disagree.
Is RCD compulsory?
RCD requirements for different socket types in New Zealand
RCDs are compulsory for 10A and 15A socket outlets in most circumstances. Under the amended regulations, 16A sockets are no longer required to have RCD protection. Electrical inspectors warn that removing RCD protection from 16A sockets increases electrocution risk. This was widely reported in December 2025 by RNZ and The Post.
Does a 16A socket need RCD protection?
Not anymore. WorkSafe’s amended regulations remove the requirement. However, the EWRB notes that if the amendments apply standards to new items not previously covered, compliance is required by 13 November 2026. EWRB.
What is an RCBO and how is it different from an RCD?
| Feature | RCD (Residual Current Device) | RCBO (Residual Current Breaker with Overcurrent) |
|---|---|---|
| Function | Detects earth faults and trips when leakage exceeds threshold (typically 30 mA) | Combines RCD function with overcurrent (short-circuit/overload) protection |
| Space in board | Requires separate MCB for overcurrent | Single module saves space |
| Common use | Subcircuits with separate overcurrent protection | Modern distribution boards where space is limited |
| Cost | Lower | Higher |
The catch: RCBOs are more common in modern distribution boards, but they are not required for 16A sockets under the new rules. Yet many electricians choose RCBOs for safety.
What does C1, C2, and C3 mean on an electrical inspection?
C1: immediate danger
C1 classification indicates an immediate risk of injury or fire. Under the new rules, a 16A socket without RCD protection might not automatically be C1 if the installation complies with the regulation — but inspectors may still classify it as C2 or even C1 if they deem it hazardous.
C2: potentially dangerous
C2 indicates a potential hazard that requires attention. WorkSafe’s rule change may affect how inspectors classify certain installations. An installation that previously would have been C2 for missing RCD on a 16A socket may now be compliant and given a C3 or no notation.
C3: improvement recommended
C3 is a recommendation for improved safety, not a violation. Electricians can advise clients to add RCD protection even if not required.
“We still recommend RCD protection on all socket outlets, regardless of rating. Safety should not be compromised by a regulatory change.” — Master Electricians Association representative
Are plug-in circuit breakers legal?
Legal status of plug-in circuit breakers in New Zealand
Plug-in circuit breakers are generally not permitted for permanent installations under AS/NZS 3000. They may be used as temporary devices in some contexts. WorkSafe recommends hardwired protection devices for all fixed circuits. WorkSafe EV charging guidelines state that some plugs should comply with IEC 60309-2 and have a rated current not exceeding 16 A, but that refers to EV charging connectors, not plug-in breakers.
Using plug-in circuit breakers as a substitute for hardwired RCDs on 16A sockets may still violate AS/NZS 3000. Always consult a licensed electrician.
The pattern: plug-in breakers are not a safe workaround for the new 16A socket rule.
What is the difference between RCD and RCBO?
See the table under the “Is RCD compulsory?” section. The key distinction: RCD detects earth faults only; RCBO adds overcurrent protection. In the context of the rule change, an RCBO on a 16A circuit provides both protection types, but the regulation only requires overcurrent protection (MCB) — RCD is optional.
- An RCD detects earth faults and trips when leakage exceeds threshold (typically 30 mA) — WorkSafe NZ
- An RCBO combines RCD function with overcurrent (short-circuit/overload) protection — EWRB
- RCBOs are more common in modern distribution boards where space is limited
What are the five golden rules for electrical safety?
The five basic electrical safety rules
- Isolate the circuit
- Verify isolation
- Earth and short-circuit
- Cover or guard live parts
- Use approved test equipment
These rules apply to all electrical work regardless of regulatory changes. WorkSafe’s rule change does not alter these fundamental safety practices. The golden rules remain the baseline for all licensed electricians.
What this means: even if a 16A socket does not require RCD, workers must still follow isolation and testing procedures before any work.
Worksafe electrical rule review 2022: What changed and when does it take effect?
Timeline of the rule review and amendment process
- 2010: Original Electricity (Safety) Regulations enacted.
- 2018: AS/NZS 3000 Wiring Rules updated.
- 2022: WorkSafe begins review of electrical safety regulations.
- 13 November 2025: Amended regulations come into effect; mandatory RCD protection for 16A sockets removed.
- 4 December 2025: RNZ and The Post report “lethal” risk warnings from electrical inspectors.
- 12 November 2026: Deadline for full compliance with amended regulations (optional compliance period ends).
Key changes to the Electricity Safety Regulations 2010
The amended regulations came into effect on 13 November 2025. Compliance with the amendments is optional until 12 November 2026. WorkSafe does not require mandatory RCD protection on 16A sockets under the new rules. However, if construction begins after 12 November 2026, the work must comply with the new standard. WorkSafe NZ.
“If work on an installation started after 13 November 2025 using the old version of the standard, it must be completed by 12 November 2026.” — WorkSafe NZ
Compliance deadlines for electricians and homeowners
Electricians have until 12 November 2026 to fully adopt the new rules. If an installation is unfinished by that date, the electrician should complete a Certificate of Compliance for the work completed up to that date. WorkSafe NZ.
Practical steps for electricians adapting to the new rules
- Review the amended regulations and WorkSafe guidance.
- Assess any ongoing projects using the old standard; plan to finish by 12 Nov 2026.
- For new 16A socket installations after 13 Nov 2025, decide whether to voluntarily add RCD protection.
- Update internal compliance checklists and inspection reports.
- Communicate with clients about the safety implications of omitting RCD.
- Consider using RCBOs for added protection on 16A circuits.
- Document all decisions and certifications.
worksafe.govt.nz, worksafe.govt.nz, worksafe.govt.nz, worksafe.tas.gov.au, blakley.co.uk, worksafe.qld.gov.au, worksafe.nt.gov.au, worksafe.act.gov.au
Frequently Asked Questions
What is the Worksafe electrical rule review?
It refers to the 2025 amendment to the Electricity (Safety) Regulations 2010, which among other changes removed mandatory RCD protection for 16A socket outlets.
When do the amended electricity regulations become mandatory?
Compliance is optional until 12 November 2026; after that date all new work must follow the amended regulations.
Why did WorkSafe remove RCD protection for 16A sockets?
WorkSafe has not fully explained the reasoning in official statements. The change aligns with some international standards but has been criticized by electrical inspectors.
How do I know if my socket is 16A?
Check the socket face or the circuit breaker rating. 16A sockets are larger than standard 10A sockets and often have a horizontal earth pin.
Will the rule change affect my home insurance?
Possibly. Insurance policies may require compliance with current regulations. A 16A socket without RCD might be considered a higher risk. Consult your insurer.
What should I do if I have a 16A socket in my workshop?
Consider installing a portable RCD or asking an electrician to add a fixed RCD/RCBO. Even though not mandatory, it reduces electrocution risk.
Who enforces the Electricity Safety Regulations in New Zealand?
WorkSafe New Zealand is the primary regulator. The Electrical Workers Registration Board (EWRB) handles worker licensing.
Bottom line: WorkSafe has removed mandatory RCD protection for 16A sockets, creating a one-year transition period. Electricians must decide whether to continue with voluntary RCD installation. Inspectors warn of lethal risk; the industry faces a safety-versus-regulation dilemma.
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