CT Metering Installation Sydney
Quality Electrical Work. Done Right Every Time.
CT metering measures power on sites that draw more current than a standard meter can carry. In NSW that line is 100 amps per phase. Above it, Ausgrid and Endeavour Energy require current transformer (CT) metering in a CT cabinet or meter panel.
Dave Fenech Electrical Services installs, upgrades and repairs CT metering across Sydney. We’re a Level 2 Accredited Service Provider, trading since 1999, and most of our CT work is on commercial and industrial sites, strata buildings and large homes on 3-phase power.
For commercial and industrial jobs we can do the whole supply side as one job. That covers the meter box, the CT metering, the cabling and the consumer mains from the street to the building.
CT Metering Services Across Sydney
For Commercial, Industrial and Large Residential Sites
We install and upgrade CT metering Sydney-wide for factories, warehouses, shops, offices, strata buildings and large homes. Every job is done by licensed Level 2 electricians using network-approved equipment, and tested before the power goes back on.
New CT Metering Installations
3 Phase CT Meter Upgrades
Meter Boxes, Cabling & Consumer Mains
CT Meter Repairs & Fault Finding
Defect Rectifications & Compliance Checks
Client Testimonials – Read What Others Have To Say About Dave Fenech Electrical Services
Contact Our Friendly & Experienced Team
Get a Free Quote for Your CT Metering Installation
✓ Network-approved equipment & compliant installations ✓ Licensed and insured electricians ✓ Servicing all areas across Sydney
Why Install a CT Metering System?
Modern properties use more power than ever, especially those with high-load equipment or multiple tenants. A current transformer meter helps monitor usage accurately, reduce risks and meet network and regulatory standards.
Ensure Accurate Reading and Billing
Get reliable energy readings that reflect true consumption and prevent billing errors.
Comply with Network Standards
Meet Ausgrid and Endeavour Energy requirements for large electrical connections.
Protect Electrical Equipment
Monitor high loads and detect faults before they cause damage or downtime.
Support Large Loads
Measure big loads like air conditioning plant, machinery, lifts and large solar systems safely and accurately.
CT Metering Services in Detail
Every CT metering job we do is tested and meets Ausgrid or Endeavour Energy requirements and the NSW Service and Installation Rules.
Our services include:
- New CT metering installations for commercial, industrial and strata sites
- CT cabinets, meter panels and test blocks
- Complete meter boxes, cabling and consumer mains from the street to the premises
- Upgrades from direct (whole current) metering to CT metering when the load grows
- 3 phase CT meter upgrades with a switchboard upgrade where needed
- Fault finding and replacement of faulty CTs, test blocks and meter panels
- Defect notice repairs on metering
When Does a Site Need CT Metering Instead of a Standard Meter?
A standard meter is a direct connected, or whole current, meter. All the current flows through it, and in NSW that’s allowed up to 100 amps per phase. Most houses sit well under that.
Once the maximum demand goes over 100 amps per phase, the meter can’t carry the load safely. Current transformers go around the incoming cables instead and send a small, scaled-down signal to the meter. The meter multiplies it back up by the CT ratio, for example 200:5, to record the real usage.
Sites that usually need CT metering include:
- Factories and workshops with heavy machinery or welders
- Warehouses, cool rooms and large commercial kitchens
- Shopping centres, offices and strata buildings with a main supply over 100 amps
- Schools, clubs, medical centres and other large buildings
- Large homes on 3-phase power with big air conditioning, pool and solar loads
Not sure which side of the line you’re on? We work out the maximum demand from your loads, then tell you whether direct metering will do or the site needs CT metering. If it’s direct metering, see our electricity meter installation page.
CT Cabinets and Meter Panels
A CT cabinet, also called a CT metering cabinet or CT enclosure, is the steel enclosure that holds the CT metering. Inside are the current transformers on the incoming mains, a test block so the metering can be checked and isolated safely, and the panel the meter mounts on.
The cabinet has to meet the network’s rules on size, location, access and sealing. It’s often mounted outside on a wall or as a free-standing pillar, or in a main switch room for larger buildings. Because the meter has to be read, tested and replaced over the years, clear access matters as much as the wiring.
We install the CT cabinet, current transformers, test block and wiring, and arrange the meter with your retailer and their metering provider. If your old CT panel is rusted, damaged or too small for the load, we replace it and transfer the metering across.
Complete meter box and consumer mains installs
On commercial and industrial jobs we often build the whole supply. That means the meter box or main switchboard, the CT metering, the cabling and the consumer mains from the street, either overhead or as an underground supply. One Level 2 team handles the design, the network paperwork, the connection and testing, so there’s no gap between trades. If your main board needs work too, see our switchboard upgrade page.
Why Sydney Locals Choose Dave Fenech Electrical Services
We install CT metering the right way. Safely, neatly and in line with NSW electrical and network standards. Our Level 2 electricians use network-approved equipment and test every connection before handing over.
We check polarity, CT ratios and wiring at the test block, so your readings are right from day one. Whether you need a new installation, an upgrade or a defect fixed, you get honest advice, a fixed quote and neat work.
Our Promise: We arrive on time, work safely and complete every CT metering job to the highest industry standards. That’s the Dave Fenech Electrical Services way.
- Licensed & Insured Electricians
- All Installations Meet NSW Electrical Standards
- Clear Quotes, No Hidden Costs
- Fast, Reliable Service Across Sydney and Surrounding Suburbs
- Dave Fenech Electrical Services Trading Since 1999
Contact Our Friendly & Experienced Team
Get a Free Quote for Your CT Metering Installation
✓ Network-approved equipment & compliant installations ✓ Licensed and insured electricians ✓ Servicing all areas across Sydney
How Our CT Metering Service Works
Getting your CT metering system installed or upgraded with Dave Fenech Electrical Services is straightforward. We manage the entire process from inspection to testing so you know exactly what to expect.
Step 1: Call or enquire online to book your site assessment.
Step 2: We inspect your electrical system and confirm network requirements.
Step 3: You receive a fixed-price quote with no hidden extras.
Step 4: Our licensed electricians install, test and certify your CT metering system.
Ready to upgrade your electrical metering safely and accurately?
Book Your CT Metering Service Today or call us now on 02 9833 9566.
Common Questions About Our CT Metering in Sydney
What is CT metering and how does it work?
CT metering, or current transformer metering, measures power on high-current sites. Current transformers go around the incoming cables and produce a small current in proportion to the load. The meter reads that small current and multiplies it by the CT ratio to record the real usage. This means the full load never runs through the meter itself.
When is CT metering required in Sydney?
In NSW, CT metering is needed once a site’s maximum demand is over 100 amps per phase, the limit for a direct connected meter. That’s common for factories, warehouses, shopping centres, strata buildings and large homes on 3-phase power. Ausgrid and Endeavour Energy set the rules for CT metering on their networks, and we design the install to meet them.
How is CT metering different from a standard electricity meter?
A standard, or whole current, meter has all of the site’s current flowing through it, which is fine up to 100 amps per phase. A CT meter measures a scaled-down signal from current transformers on the mains instead. That’s why CT metering is used for large commercial, industrial and multi-phase supplies.
What is a CT cabinet?
A CT cabinet is the enclosure that houses the CT metering. It holds the current transformers on the incoming mains, a test block and the meter panel. It has to meet network rules for size, location, access and sealing, and can be wall mounted, free standing or inside a main switch room.
What is a CT ratio?
The CT ratio is the relationship between the current in the main cable and the current the transformer sends to the meter. A 200:5 CT sends 5 amps to the meter when 200 amps flows in the cable. The meter is set to the same ratio, so getting it right at installation is critical for accurate billing.
Do you install the whole meter box and consumer mains?
Yes. Mainly for commercial and industrial sites, we install the complete meter box, the CT metering, the cabling and the consumer mains from the street to the premises. Having one Level 2 contractor for the whole supply keeps the network paperwork, connection and testing in one place.
Can I upgrade or replace my existing CT metering panel?
Yes. Our Level 2 electricians replace rusted, damaged or undersized CT panels and cabinets, and fix faulty CTs and test blocks. If you’re upgrading from single phase, we can also take the site to 3-phase power with CT metering. Every upgrade meets NSW wiring and network rules.
Who is qualified to install CT metering in Sydney?
CT metering connects to the network side of your supply, so the work must be done by a Level 2 Accredited Service Provider. Dave Fenech Electrical Services is Level 2 accredited and works on both the Ausgrid and Endeavour Energy networks, covering CT installation, upgrades, testing and defect repairs.
How long does a CT metering installation take?
A straightforward CT metering upgrade on an existing site is usually done in a day on site. A new commercial supply with a meter box, new consumer mains and a CT cabinet takes longer, and the power-off time has to be booked with the network. We give you the timing when we quote, and plan the work to keep downtime short.
Can you help with CT metering defects or compliance notices?
Yes. If Ausgrid or Endeavour Energy has issued a defect notice on your metering, we inspect the CT cabinet and wiring, fix or replace the affected parts and complete the paperwork so the notice can be closed. See our defect notice repairs page for more.
Book Your CT Metering Service in Sydney Today
At Dave Fenech Electrical Services, we make energy metering simple, accurate and compliant. From new CT metering installations to upgrades and defect rectifications, our Level 2 electricians deliver precision workmanship and reliable service every time.
In business since 1999, we’re trusted by Sydney homeowners, builders and businesses for professional electrical solutions that meet every standard. If you’re looking for CT metering Sydney property owners trust, call Dave Fenech Electrical Services today.