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Its one of those weeks. A simple job but.. We are installing a small G98 string inverter 3.6kw without any batteries its fed from 2 strings of 4 panels 450w @ 36.6v ea max 13.6 amps. 1 string is high up on a wall the other is at ground level. Th consumer unit is fully populated with type A...

Good morning, If we test a circuit with all circuits live we get a substantially higher Zs reading than when only having that circuit being tested live. Eg. a small ish radial with 4 sockets protected by a 16amp MCB with a 30ma RCB gives a R1+R2 reading of 0.43 and a calculated Zs of 0.74 (Ze...

What are the reasons why a Zs reading from a farthest socket gives inconsistent results. The circuit is a radial on a 20amp breaker with a RCB type A, Zs goes from 1.8 to 1.41 and at one test reached 2 ohms on L-PE, remains consistent at 0.88 on L-N. Tested on No trip on the MFT - DL9118...

Quinetic receivers are live and nuetral only, no pass through for the cpc, whats the best way of ensuring that the cpc carries on to the fitting. The sheathing clamp and housing on the receiver is not big enough to take a waggo between it and the units terminals ... use an inline crimp ?

Fitting a new extractor fan model QF100HTX5CON, fan works but not as intended, its being fed from a 3amp fcu as per installation notes. The wiring diagram for the model shows that for the fan to operate in simple mode off/on - no timer or humidisat the permanent live and live switched must be...

Any definitive guidance out there on RCBO spacing, just going through some quotes for a flat referb, one has a note on it specifying that a 12 way board was needed to correctly space out the RCBO's to minimise " overheating and fire risk"... the two others spec a 8 way board ( its a tiny flat)...

Amazed by the Germans - who knew they had such a great taste in irony. Emerging from a bunker to launch a frontal assault on the Scots, which unsurprisingly was delivered by crushing the left wing.

Did anybody see James Cleverly failing to deny and actually tell ED Balls he had no right to even ask him...that the Tories now plan to remove us from The European court of Human Rights - ( its not a EU court its a world court we help set up to prosecute the nazi's) in a massive lurch to the...

Tripped the RCD on a split load consumer unit swapping out a socket, earth and Neutral touched.The circuit had its breaker off and is a radial. However another circuit breaker tripped at the same time as the rcd...this breaker is on the same rcd. Powered both circuits up with no issues... So...

Where the 1970's ?

Morning, Spur of a radial, I believed that a radial circuit has no spur as per a traditional ring, ie a radial can be a star or tree shape to begin with and therefore a spur off a radial is just a nonsense. The reason I ask is because I have just been quoted silly money to have two high level...

Boiler "serviced" for 9 years by same man...all the registrations known to man and a real if its gas you must not even look at it attitude, which being a engineer myself I thought great, must know his stuff.... Boiler started to bang on lighting, then lit and went out. Boiler man called...1...

As per life's rules boxing day boiler problems. Baisi - m110.32 /sm/e - intermittent hot water, central heating only getting slightly warm unless turned up to max then over hot with bit of dribble passed out the prv. Called out an engineer and diagnosed the problem as a faulty CH temp...

Hi any help or pointers to reference materials greatly appreciated. Background. We were left a piece of land by my wife's farther, got planning permission for 3 Holiday cabins. Tendered the job and with no interest credible interest from UK companies German outfit did a turnkey solution. Job...

Hi all, I need a bit of advice on removal of iron oxide build up in the DHW heat exchanger and obviously from the system itself.. We keep getting blockages of FE in the plates - now that I am on an enforced holiday from Airbus I thought its time to sort out the problem. Before you ask we have...