Recent content by ericmark

I would say, two culprits, one, items outside, and second items with mineral insulated heaters. OK, maybe toasters it a third, but a toaster can be unplugged, so looking at items which can't be unplugged with ease. So the mineral insulated heater is found in ovens, freezer, washing machines...

I look at the cost of central heating to run, and the cost of a small oil filled radiator and the like, and it does seem central heating is an expensive way to heat a room. I pay around £800 a year for oil, only used for half the year, so £800/26 = £30 a week, or £4.40 a day. If I assume 8...

Before the inspection you could do the repairs, after the inspection it needs a qualified person, anyone with an invoice that says he is from an electrical firm is unlikely to be challenged. But if a minor works certificate is completed I would not consider any court would question to if the...

Isolators normally down is off, so anything falling on it will turn it off, switches traditionally down is on, but modern smart switches, often you simply push them, so there is no up or down.

The problem is, an RCD can trip with a neutral fault, and the MCBs do not isolate the neutral, however an isolator does, so turn off the cooker isolator and the immersion heater isolator and unplug everything as there may be a neutral to earth fault. Also turn off main switch (Isolator) will the...

My own the pump is on the return, so are the zone valves, that was how it was done, so the pump did not run so hot, but when TRV heads came in, the standard changed, so a by-pass valve could be included.

If on fitting the old thermostat some link plug was removed, you may be unaware. Have you downloaded the instructions for the old thermostat to see if when fitting it some link plug is removed?

I can only read the manuals the same as everyone else, I note The "Timerlink" when reading the installation instructions and I would guess there was a link removed when old unit was installed, and that link needs replacing. I would guess the Hive should be connected using opentherm I have...

The Ni-MH tend to have the charge controller built into the battery, so in the main old Ni-Cad chargers will work, but not all. The Ni-Cad battery had an odd voltage characteristic, where with a consent current charger, the voltage would peak just before being fully charged, and the Δ charger...

Yes it works, brothers-in-law old house had it, and it worked well. Basic idea is to bring many heating units together Diagram shows a single tank, in real life it was two massive tanks, and it would keep house above freezing while he was visiting his children in Germany, and one arriving back...

My house the DHW is in the cylinder, and the CH water is in the coil, however there is a move to reverse this and heat the DHW as required. This has the advantage that we are not coming into contact with stored water, so the legionnaires problem is no longer there, the stored water can be...

As a user of tradesmen, I expect a chippy to be able to fit a work top, and to fit stairs, also floor boards, and bespoke kitchen cupboards domestic wise, and concrete shuttering commercial wise. A kitchen fitter I expect to be a scheme member and also be able to do the electrics, or at least...

You're not the only one. Also, wife rummaging through the garage looking for an ES bulb, and finding a SON bulb and fitting it into a standard ES light fitting. Good by my expensive SON bulb.

@pete01 has given you the start. In the main it will turn out to be something plugged in. Although most on/off switched turn off the line, many do not turn off the neutral. Both line and neutral are live, and if either has a path to earth it can cause a trip, so need to unplug which turns off...

I seem to remember the experiment when doing 'O' level physics. I remember the experiment as I had an expensive fountain pen, and the experiment was done with acetone, and I got it on my fingers, and melted my expensive pen. But I failed my 'O' level physis. Also failed to pass 'A' level, but...