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Three Phase Domestic E.V. Chargers.

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There are three phase E.V. chargers available. Most houses only have a single phase supply though, BUT here in darkest Norfolk many houses have a three phase supply due to having no mains gas supply. This was originally to power off peak storage heaters.


Often I find a single phase supply in homes with two unused dusty main fuses for the two additional phases.


I was wondering if the cost of converting to a three phase tariff would benefit customers who wish to connect up a new E.V. charger to a three phase supply at home.


Thoughts please

Inside the Zappi 2 smart electric vehicle EV charger which doesn't need an earth rod on TNCS systems - Bing video


Z.
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    Looks like the standard charger offering is 7Kw 1P and 22kw 3P. Many cars with only take max 11kw 3P. If this is truly the future of motoring and home charging will be integral to it, then it would seem prudent that 3P should be a standard choice for the domestic installation deriving power from the public mains. Many of my clients are well-to-do business people who seem to be opting for top end electric cars as more of a status symbol than anything else. They usually charge at their business premises and a simple 7Kw unit is installed at home just for convenience. 

    What pains me is the absence of any provision in new homes which often means ugly surface-mounted wiring.

    Hard to predict what way things will go as I am seeing increasing demand for battery buffer and solar with some folk going off grid altogether. However, I reckon that will stay a fairly niche market given the capital costs.

    just as a comparison, NIE are charging £ 24K for 3P and £8300 for 1P for contestable and non-contestable for one of my clients who is building a new house in a rural location. He was considering going off grid but I reckon even at 24k the NIE supply is the way to go.
  • 0
    No such thing as a three-phase tariff. You pay for what you get in units like everybody else.
  • 0
    The standing charge is usually a bit higher Chris. They need to keep more kit working. Sometimes cheaper tariffs are available if you need a lot of electricity, but some "domestic" tariffs may not be available.
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    I have a three phase supply and have never had a problem with different suppliers and appear to get a standard standing charge.
  • 0
    The bit about the kit is covered by the installation charge. My bills say nothing about the number of phases and I have changed supplier twice. When you look at USwitch, or similar, it never gives any indication that the number of phases is relevant. I just give meter readings as required.


    When I first signed up to a supplier, Scottish Power did not seem to be aware of the number of phases 'cos the first meter fitter was not three-phase qualified. £30 for a wasted visit. I got more in refunds than I paid for leccy.


    Of course, one of the great advantages of three-phase is that AFAIK, nobody makes smart meters. ?
  • 0
    Three phase smart meters are available now. 

    https://www.sms-plc.com/insights/blogs-news/what-does-the-3-phase-smart-meter-mean-for-the-smart-energy-revolution/
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    ***!

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