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It is sold into a consumer market - ie, not subject to HASAW. It is sold as non-fixed wiring - ie, not subject to much regulation. Lapp Cable are using this, but would be interesting to get it in writing. There concern is liability, its a sale, not much else really. Now consider... -...

Are the so called "experts" online & printed magazine reviews? 1. Cost of running a major online web magazine w/forum is 40-60,000/yr. 2. Advertising Revenue is CRITICAL in meeting such costs. 3. Magazines OFTEN print little more than Advertising Editorial. 4. Reviews are Subjective...

Anyone any experience with Pratley Klik-Lok IP66/68 Jn Boxes? Have used Pratley above/under IP68 boxes, never used their Klik-Lok. I have a relatively "lightweight" MS Jn IP56 close to the ground. - 2.4mm wall thickness, polycarb - CW glands w/sealing washers, piranha, drain hole drilled...

How reliable are Dimplex Duoheat SH controls? - by that I mean the plastic control panel AND the PCB Anyone know the cost of replacement controls? - just so I know if infected by "crap gas boiler PCB disease" I will phone Dimplex tomorrow if time to find out. I was going to buy my...

Does the heat pump actually require a 63A MCB? - As in a 9-12kW air/ground source heat pump to water heating? Or are they simply specifying 63A to avoid trip on startup inrush? - As in a 5.4kW air source split load heat pump to air heating? Sometimes heat pump makers suggest sky-high...

Ah, never at night, sorry. That could indicate it is appliances used during the day generating sufficient background leakage to push the total close to the ramp figure. At night such appliances are off (washer, dryer, heating, immersion). Clamp meter to see what leakage is? Putting...

Clamp meter would be good. Identify what background leakage is w.r.t. RCD ramp figure. Identifying why it trips at night. I assume the same combination of lights @ day means no trip? In which case, what is coming on at night? E7? Boiler? Immersion? Thermostat? PIR light? Dryer? Washing...

Relative has expressed interest in Clipsal IP66 (rotary) switched sockets, reason being... - Switch is external (not under a flap) - Switch is big & rotary - Switch is wet finger proof - Switch is usable with curled-in-fingers (can't recall medical term) - Switch is accessible without...

Yes. Indeed, converting to E7 means... - new CU - supplied off a DNO-Teleswitch/Timer - supplied off a dual-rate meter (day & night rate) Storage heaters must be time-switched to the E7 period. - That way they are only charging during the night-rate 5.5p/kWh - Typical Night (E7) rate...

As posted, get the problems sorted. Storage heaters should only run for 7hrs. - They charge for 7hrs hence a 3.3kW has 24kW rating - They retain 40-55% of the heat, release 60-45% over the day - Peak internal temperature is about 690-710oC If they run for longer. - Per HOUR a 3.3kW...

> It could be that some of his advertisers have taken a dislike to > electrical forums because their products don't always get good > on-line reviews from the people that are actually using/installing them.... MEM isolators - Nice design, nice plastic terminal shields, nice enclosure...

Ah, hate touchpads. Bad terminations can cause reduce IR, particularly when combined with condensing humidity and 500V (tracking). Loose terminations can cause insulation breakdown, however air is a brilliant insulator (unfortunately). An IR test is pretty useless without visual...

New bone dry circuits can give >500M (indeed over 2G). Once in service, the humidity of the building, its construction, and any local factors can swing results all over the place. IR can be low from metal work below dew point in winter exposed to high humidity & high after a long dry spell in...

Ok, so it appears the overheating problem has been resolved. Likely the original SWA was not tightened sufficiently - result obvious. Now you must ensure two things. - All covers must be in place with everything live (!) - You need electrical tests performing re Continuity, R1+R2, IR, EFLI...

Oh, and NEVER tin the strands of any flex. - Solder is very soft - Any heating causes the material to soften further and FLOW - Thus your terminal will loosen, heat more, loosen, heat more, BURN __________________________________________________________ You need an industrial...

> you mention that the terminals are rated for 50a No - there were various sized of terminals. If that is the your terminal, it is rated to 76A = fine. > the original cable in was 16mm armoured however i could > see that it was pulling at the board were it was so stiff SWA must...

To add, exactly how was the EFLI measured? Fruit machine? - EFLI meter with fruit machine result chosen to produce code? Measured? - High current measured Ze, dead R1+R2 measurement, added for Zs? EFLI meters fall into 2 camps... - High current tests -- useful to verifying if the...

> High Zs - The circuits were mainly split air con unit with 20amp D type > MCB's The average readings were a few ohms above the corrected > values but within table 41.3 IMO Code 2 Is the measured EFLI <80% of that required for 20A Type-D? The 80% figure is used "because Ze may...

Well from the terminal photos... 1) Looks like booster cables from the PCB terminals Cable could be XLPE or silicone, to permit high operating temp. The concern would be the cable-to-PCB-to-connector track size, if that is not sized sufficiently it will be a source of heating. 2)...

The problem with BS8436 is not the nail test, but the wording. - FP cables must use a particular insulation to meet their fire rating - BS8436 wording *specifies* a GP insulation, not sufficient for FP fire rating So until BS8436 is reworded, eg, to specify performance rather than a...