# Common mistakes (/docs/form-guides/nsw/electrical/nsw-ccew/common-mistakes)



Common mistakes when completing a NSW CCEW, and how to avoid them.

Catch gaps early in the [NSW CCEW online form](/forms/nsw-ccew). Browse [NSW electrical forms](/nsw/electrical) or read more in the [NSW CCEW guides](/resources/forms/nsw-ccew).

## Data entry and validation [#data-entry-and-validation]

### 1. Incomplete testing documentation [#1-incomplete-testing-documentation]

**Mistake:** Missing or incomplete test results, especially insulation resistance, earthing, and RCD tests.

**How to avoid:**

* Perform all required tests on site before certifying
* Record measured values (e.g. insulation resistance in MΩ) from calibrated equipment
* Use **Check All** only when every listed test was actually performed
* Complete the **Test report** section before **Certification**

<Callout type="warn" className="docs-callout-warn my-4">
  Form validation does not replace physical testing. Test the installation using the standards and job requirements that apply to your work.
</Callout>

See [Test report](/docs/form-guides/nsw/electrical/nsw-ccew/test-report).

### 2. Address errors [#2-address-errors]

**Mistake:** Wrong or incomplete addresses for customer or installation site.

**How to avoid:**

* Confirm customer address vs installation site. They are separate fields
* Cross-reference with the job file, contract, or electricity bill
* Complete all required components: street number or lot/RMB, street name, suburb, state, postcode
* For rural properties, verify lot/RMB numbers with council or title documents

See [Customer](/docs/form-guides/nsw/electrical/nsw-ccew/customer) and [Installation](/docs/form-guides/nsw/electrical/nsw-ccew/installation).

### 3. Outdated licence details [#3-outdated-licence-details]

**Mistake:** Expired or incorrect installer or tester licence numbers and dates.

**How to avoid:**

* Check licence expiry before signing the certificate
* Verify contractor and qualified supervisor numbers against current NSW records
* Renew stored details after every licence renewal. Do not copy old certificates blindly

See [Installer](/docs/form-guides/nsw/electrical/nsw-ccew/installer) and [Tester](/docs/form-guides/nsw/electrical/nsw-ccew/tester).

## Technical specification errors [#technical-specification-errors]

### 4. Equipment and work detail inaccuracies [#4-equipment-and-work-detail-inaccuracies]

**Mistake:** Wrong equipment ratings, quantities, or work scope documented.

**How to avoid:**

* Tick only equipment categories where work was performed
* Record rating and number installed for each selected category
* Use **Particulars** for model numbers and non-standard configurations
* Align load calculations with installed equipment

See [Equipment](/docs/form-guides/nsw/electrical/nsw-ccew/equipment).

### 5. Meter and load errors [#5-meter-and-load-errors]

**Mistake:** Missing meter rows when metering work was done, or incorrect tariff/load figures.

**How to avoid:**

* When replacing meters, record both removed and installed meters
* Match meter numbers and readings to the physical meters on site
* Confirm estimated load increase reflects new circuits and appliances

See [Meters](/docs/form-guides/nsw/electrical/nsw-ccew/meters).

### 6. Serial number management errors [#6-serial-number-management-errors]

**Mistake:** Duplicating serial numbers, skipping sequences, or using the wrong format.

**How to avoid:**

* Follow the format `[LicenceNumber][SequentialNumber]` (e.g. `444444C001`)
* Use the serial number helper for sequence suggestions, then verify manually
* Keep a personal log of every serial issued

<Callout type="warn" className="docs-callout-warn my-4">
  Serial number errors can create lodgement and record problems. Check the current NSW serial requirements before you issue.
</Callout>

See [Certification](/docs/form-guides/nsw/electrical/nsw-ccew/certification).

## Network and provider errors [#network-and-provider-errors]

### 7. Incorrect network service provider [#7-incorrect-network-service-provider]

**Mistake:** Wrong electricity distributor or missing provider email for lodgement.

**How to avoid:**

* Confirm the distributor against the customer's electricity bill, not postcode alone
* **Ausgrid:** Sydney, Central Coast, Hunter
* **Endeavour Energy:** Greater Western Sydney, Blue Mountains, Southern Highlands
* **Essential Energy:** Regional and rural NSW
* Enter the correct distributor email for CCEW submissions

See [Installation](/docs/form-guides/nsw/electrical/nsw-ccew/installation).

## Quality assurance [#quality-assurance]

### 8. Skipping final review [#8-skipping-final-review]

**Mistake:** Issuing the certificate without checking all sections against the job file.

**How to avoid:**

* Review customer, installation, equipment, meters, installer, tester, test report, and certification in order
* Compare the generated PDF to your site notes before giving it to the customer
* Confirm the compliance declaration reflects work you personally verified

<Callout type="success" className="docs-callout-success my-4">
  Treat the cert as an official record. Every field should match what you did on site.
</Callout>

<Card title="Best practices" icon="info" href="/docs/form-guides/nsw/electrical/nsw-ccew/best-practices">
  Workflow and record-keeping tips.
</Card>