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BAS I doubt the self-proclaimed cyber sergeant is aware of the route made available to certain disables persons¹ by regulation 4 of the Building (Local Authority Charges) Regulations 2010. ¹The OP in his opening post refers to his being disabled.

Reflecting the "C" in the vertical axis must cause an intersection with the left-hand semicircle formed by the "E" without a region being enclosed. A circle added in Photoshop demonstrates that for this logo a region is formed and hence the logo is non-compliant.

http://www.bis.gov.uk/files/file38623.pdf (page 16)

The DIN rail meter in the 3rd post has a fake CE marking. Stick with known brands.

Tested it with a Fluke 289. The impedance between the pipe and the main earthing terminal was 0.03 ohm. Will try it with a nearby socket tomorrow.

Was having a little look under the floorboards beneath the hot water tank earlier in anticipation of wiring up a new shower and I spotted a concealed junction box connected to a piece of three core & earth cable whose sheath was broken. On closer inspection I decided - compliments of my recently...

The main six instruments on the majority of aircraft are as standardised as is possible. This is true both for the physical position of the instruments as well as the way they provide information which will be evident from a quick look at the various instruments on google images. Engine...

How many cables, including the shower circuit, are grouped at that junction and for what distance are they grouped?

The OP in complying with R433.1.1(ii), which he is not bound by law to observe, ought to choose in Table 4D5A of BS 7671 that ampacity, subject to any necessary derating, which at least equals the magnitude of the OPD rating. In his case the OPD rating will be 45 A or greater. The tabulated...

The Building (Local Authority Charges) Regulations 2010, regulation 4, provides a fees exemption to work(s) carried out "for the purpose of [...] providing facilities designed to secure the greater health, safety, welfare or convenience of the disabled person." If this regulation is...

That 45% extra capacity is more than sufficient to cover the potential overload. Thanks to each of you for the helpful and informative replies.

Concerned more about the 16 mm² distribution cable taking >60 amps than the blowing the supply fuse (which I'd also rather not do). It is precisely the fact that the 60 A BS 1361 fuse requires about 100 amps (99th percentile or whatever) over an hour before blowing which makes the matter of...

That's a risk I'd rather not take. Occasionally the washing machine, bathroom heater and kettle are on simultaneously. Combined with a shower unit and background consumption the total load would be more or less 60 amps. Hence, I don't want the immersion heater and shower unit to be powered...

I'm trying to figure out what sort of switch is needed to simultaneously bring a shower unit on line whilst isolating, say, an immersion heater; and vice versa. Don't want to overload the 60 A supply fuse. Thanks.