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The chart I show is every 30 minutes. I am sure, there is enough data to say if using x kWh of gas or oil per year, it needs a heat pump of y kWh output. What it with meters pointed at a wall or window. 95% of the time, you can look at the bill for the previous year. OK, some people cook with...

If I came to fit a shower, and the loop impedance is not within spec, I have two options, find out why and correct it, or say sorry can't fit the new shower. Are they saying they are using incompetent engineers? It's a bathroom, needs to be a scheme member to work in a bathroom in Wales, are...

I already have the twin battery charger, it was the idea of having a unit which needs two batteries at a time, with a single battery charger, the twin one is fast, so with two sets of batteries, by the time second set are flat need to wait about 10 minutes for the first set to finish charging...

Yes, OK, stop losses first, or at the same time, but if the heat pump does not work with poorly insulated homes, neither will it work with well insulated homes. Yes, I see we have a 60 amp fuse in the supply to many homes, so 40 amps for the house we have 20 amps for the heat pump, so 4.6 kW...

These are the reverse of each other, is it greater or less, If less, then no problem, if greater, then may be a problem. To me, it would alert me to look at the line - neutral impedance, the line - earth is covered by the RCD, the line - neutral is not, a B40 MCB will in fullness of time trip at...

I agree, all other similar items, caravans, boats, portacabins, etc, are not permitted TN-C-S it has to be either TN-S or TT. The clarification that caravan like structures such as mobile homes must not use a TN-C-S supply I can see will cause problems, I hate the clarification, a change in the...

Will it? I assume with a brushless motor, DC is turned into AC, and it will be the frequency out of the inverter which will control motor speed. Voltage may have a bearing, and the larger the battery Ah wise the less volt drop, but the batteries in a strimmer last around 20 minutes, so 2 Ah = 4...

Had it with late parent's house, I could find no sign of there ever being an earth other than for GPO party line. I know there was one, as when a boy, I had blown a 13 amp fuse with a line to earth error. But could not find any sign of what it had been. So I phoned the DNO and asked what earth...

I thought it was down to the party line, it was how each party selected the phone?

Since clearly the guy did not know what he was doing, it is meaning less. We want an ELI of less than 200 ohms, as above that it can be unstable, with a TT supply that relies on RCD protection. With a TN it depends on fuse size, but with a 100 amp fuse less than 0.8 ohms with TN-S and 0.35 ohms...

Battery warrantee is longer than the payback time. So I am OK, and it is in the entrance to a converter garage so not under the main house, and I would hope a garage can stand a fire for a reasonable time, now would like to see them moved outside, but had they been fitted a month earlier then...

PME has multiple earthing, this is not required to the same degree with TN-C-S. I have only seen problems once, where a radio ham fitted earth rods for his radio, which the electrician had bonded to the TN-C-S supply earth, normally not a problem but the radio hams earth was a very low ohm...

My battery on a dull day like today lasts until 4 to 6 pm. Since on Octopus Go it does not matter when it runs out, if I moved to Octopus Argyle then it would matter, I would need the battery to last until 7 pm so would need to boost charge it on a dull day, by monitoring weather and altering...

There are a few ways to make it safe should there be a loss of PEN, this may change, as one method used is to auto disconnect if the voltage goes out of range, but there are proposals to increase the voltage range permitted, if this happens, then that method would no longer work. Since there...

I was not considering direct drive hydropower, my comment is about having inverters, which stop generators over loading even for a very short time. This is a major problem, we want the incentive to use power when there is plenty, but if we had two supplies, there would be those who would have...

My son had a charger fitted by Octopus, and they fit a dedicated consumer unit, and will not use the existing even, if as with my son's case, brand new, would outlets reserved for the EV charger. So the only consideration is TT or TN-C-S, the loss of PEN problem with TN-C-S means in many cases...

Likely the earth rod has become disconnected, and just needs a new clamp fitting, I know mine wants renewing, old one has split. Typical reading one earth rod is 60Ω and the regulations say but if the car is charged outside, likely a TT earth is safer to a TN-C-S earth.

Interested to hear how it works. I debated between Hive and Wiser, in the end went for Wiser. But have found TRV heads with on/off oil boiler do not work as well as they did with gas modulating boiler. They work, and have reduced costs, and got rooms in use to required temperature. Started with...

She wants to come in, we have a cat flap, and she uses it to go out, there is a delay coming in, as it has to detect her chip, there is a Ferrol cat we feel sorry for, so at moment sellotape over the catch so free for all, has been like that since first snow, but not only does she want letting...

To select washing machine on at 00:30 to 05:30 as cheap rate, or using predicted rates can help, but I am talking about the supplier doing the switching on and off, there is a problem as my washing machine, dishwasher, and tumble drier will not auto restart if the supply is turned off/on but the...