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Caravans, motorhomes and transportables

Do you need an electrical WOF?

Yes, they are real. If you have a caravan, motorhome, food truck or transportable building, an electrical warrant of fitness is a legal document with a four-year life. If you meant your house, you almost certainly need something else, and eCertify can tell you which in about a minute.

eCertify works to fixed prices that include GST, so the figure quoted is the figure paid.

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What an electrical WOF actually is

An electrical warrant of fitness, often written eWOF, is a real document set out in regulation 78 of the Electricity (Safety) Regulations 2010.

It applies to what the law calls a connectable installation: an electrical installation that plugs in to someone else's supply rather than being wired into a building. In plain terms, anything with a lead you connect to a power point at a campground, a depot or a site.

That covers:

  • Caravans, motorhomes and campervans
  • Relocatable and transportable buildings, including tiny homes on wheels, site huts and mobile classrooms
  • Food trucks and other working vehicles
  • Pleasure vessels

The test is how it gets its power, not what it is called. An ordinary house is wired into its own supply, so it is not a connectable installation and never needs an electrical WOF. A tiny home on wheels or a relocatable dwelling that plugs in to a supply is a different matter, and usually does need one. If you are not sure which yours is, ask us. It is a quick question to answer and it is better asked than assumed.

An eCertify inspector filling in an electrical certificate by hand

Who actually needs one, honestly

This is where most of what you will read online is wrong.

No regulation says you must hold a current warrant simply because you own a caravan. The law puts the duty on other people, and that is what catches owners out:

  • The campground or depot supplying you power commits an offence if it connects you without verifying a current warrant. That is why you get turned away at the gate.
  • Anyone hiring or leasing out a caravan or motorhome must not do so, or even offer to, without a current warrant.

So if you never plug in anywhere and never rent it out, the law does not require one of you. The moment you want to stay somewhere with power, or put it on a rental fleet, you need it.

Being honest about that is the point. eCertify would rather you booked knowing why than booked because someone implied you would be breaking the law.

How often you need one

Every four years. A warrant expires on the earlier of a new one being issued or four years from its date of issue.

Three things worth knowing:

  • A mobile medical facility is one year, not four.
  • A newly built caravan gets its first warrant at the same time as its Certificate of Compliance. The registered electrician who wired and certified the build can issue that first one.
  • Every warrant after that must be issued by a registered electrical inspector. That is a higher registration than an electrician holds, and it is the reason renewals cannot be done by whoever did the original work. eCertify's director is a registered electrical inspector, so renewals are done in house.

What the inspection covers, and what it does not

This matters more on a modern motorhome than on an older caravan, and almost nobody says it out loud.

The warrant covers the 230 volt side. The connection lead and inlet, the switchboard and its protective devices, earthing and bonding, socket outlets, fixed appliances, insulation resistance and polarity testing.

The warrant does not cover your 12 volt system, your batteries, your solar, or your gas. New Zealand specifically removes those clauses from the standard the inspection is carried out to. So a warrant on a motorhome with a large lithium battery bank and rooftop solar says nothing at all about that equipment.

That is not a loophole eCertify is exploiting, it is the law, and you should know it. If you want the low voltage and solar side looked at as well, say so when you book and eCertify will quote it separately. It is a different job with a different price.

What it costs

eCertify has been issuing electrical warrants of fitness for years. It is not a sideline we have just picked up, it simply was not on the website until now.

There are two prices, and the cheaper one is up to you.

What you needeCertify price, including GST
Electrical WOF, you bring it to usNZ$189.90
Electrical WOF, we come to youNZ$289.90

Our workshop is based in Onehunga, and it is set up for inspections. A warrant done there takes a fraction of the time one done in a driveway does, and that is the whole reason the bring-it-in price is NZ$100 lower. Both figures above include GST. If the caravan is off the road, stored somewhere awkward, or you simply cannot move it, we will come to you instead.

Testing and the warrant itself are included in both. If the installation fails, you get a clear report of what needs putting right, and eCertify can quote the remedial work before anything is booked.

Anything outside a standard warrant is assessed and quoted first.

An eCertify electrician holding a test instrument

If you meant your house

Plenty of people search for an electrical WOF because someone has asked them to prove their house is electrically safe. There is no four-yearly warrant for a house. What you need depends entirely on who asked:

Your insurance company. Usually a Certificate of Verification or an Electrical Safety Certificate, confirming the installation is safe. Insurers often write energy works certificate in the letter, which is a catch-all rather than a specific document.

Your bank or lawyer, during a sale. Usually a pre-sale Certificate of Verification.

Your council, for a building consent. Certification for the electrical work in the consent.

Your power company, after a long disconnection. If the property has been off supply for six months or more, a Certificate of Verification is needed before it can be reconnected.

Nobody, you just want to know it is safe. That is an electrical safety check, and it comes with a full written report rather than a certificate.

What you needeCertify price, including GST
Electrical safety check and reportNZ$249.90
Pre-sale Certificate of VerificationNZ$249.90
Pre-purchase electrical inspectionNZ$249.90
Building consent Energy Works CertificateNZ$259.90
Insurance Energy Works CertificateNZ$269.90
Power restoration Certificate of VerificationNZ$269.90
Mains work inspection and ROI, for electriciansNZ$349.90

One thing eCertify does not do

eCertify is not a Metering Equipment Provider. We do not install, relocate, re-seal or inspect energy meters. That work is arranged through the property's energy retailer or its metering provider, and is inspected by a network warranted electrical inspector. If your question is about the meter itself, that is who you need, and we will point you there rather than book you in.

Hours: on-site Monday to Friday, 7am to 5pm. Enquiries any time.

Not sure which one you need?

Tell eCertify who has asked you for it and why. We will tell you which document it is and what it costs, before anything is booked.

Tell me what I need

Tell eCertify who has asked you for it and we will name the document you actually need.

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