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Hi I have a vented CH system consisting of 3 zones - up, down and HW only. Pump is a Groundfos 25 50 and has been operating without issue since at least 1993. The first radiator on both downstairs circuit and upstairs circuit both fill with air within a couple of weeks of bleeding and have done...

Hello I have a GE consumer unit (RCD side and non RCD side). My bathroom circuit is currently protected by B10 MCB on the non RCD side. I would like to provide rcd protection for this circuit. The attached file gives the specs of GE B10 30mA rcbo. There are two versions (I) domestic and (II)...

Hello I have a granny flat fed via 6mm2 three core swa with the live core connected to the load side of a 63A neozed fuse in the house consumer unit. (In Ireland the live tail from the meter is connected to a neozed fuse ( as referred to above) as opposed to live and neutral entering via a...

Hi I have used a Kewtech KT35 to find insulation resistance of new 1.5mm cable. The values at 250, 500 and 1000V appear to be in excess of 2000 mega ohms i.e the upper limit of the instrument. Would these values be normal? Thanks

Hi I’ve had to break up some of the screed in my living room to replace burst central heating pipes. After I have installed the new screed (sand cement 4:1 at 50mm) how long should I cure the screed for before laying a laminate floor? Any help or other suggestions would be appreciated. Thanks

Hello I am planning to carry out IR measurements on cables supplying an outbuilding. The outbuilding was wired about 15 years ago with some of the run buried. The run is 6mm three core armoured from house cu under concrete to cu in granny flat. From 20amp MCB in the granny flat cu, 6mm three...

Hello I had 2 wall lanterns one of which never worked since I moved into my house around 16 years ago. I recently replaced both and found the new lantern didn’t work (in the same position as before). I measured voltage between live and earth and got 236V. I’m fairly sure that the neutral must...

Hi My beko 20lb450 remote control has lost some of its functionality. Is there a way to reprogramme it? many thanks

Hi My late Dad's car (1996 Clio) sits in his garage and despite my best intentions to take it out for a run every few weeks to keep the battery charged I have resorted now to using a Silverline 634004 12 Volt Trickle Charger to help out. It claims a 12V and 500mA constant output. At the...

Hi I'm a novice at woodworking but would like to make a wall mounted storage unit for cds, clock, few books etc. I want one section to have a hidden compartment. The face of this section would be set back into the carcass and I would place a joint of some kind about which the face could...

Hello I have inherited a class of agricultural science students and we are going to use the school grounds to grow winter barley, wheat and oats. I'd appreciate any opinions regarding using raised beds and how deep they should be. I could also rotavate a section of a field. I am sowing the...

Hello Do metallic taps in a garden shed fed from plastic piping constitute an extraneous conductive part? Thanks

hello I have two plastic qualpex pipes coming into a garden shed connected to metal taps in a non metallic sink. Are the taps extraneous conductive parts? Thanks

hello I want to wire a recently acquired summerhouse. I have a detached study which has a sub cu with plenty of free slots on both the non-rcd and the rcd sides. I propose to run 4mm2 cable a distance of 18 metres from the sub cu in the study to the summerhouse. i will protect the circuit...

I recently installed a freesat satellite and have aligned it in the 28.2 to 28.5 SE direction. I get 100% strength and quality from the astra 1n channels e.g bbc and itv but the max i seem to get from the nearby eutelsat channels is about 60/60 (with the exception of euronews which is 80/80). I...

Hi I recently purchased a combo set top box (Triax 537) which allows me to pick up the Irish digital terrestrial service. I notice that if I use certain electrical circuits e.g the shower, food processor and in particular the iron there is quite a lot of interference especially when the...

Hi I've had to jump start my Dad's car (Renault Clio 1996)every time I have gone to start it (3 occasions). I have driven approx 30 miles after jumping it on each occasion bur when I try to start it a few days later it is dead. Do I replace the battery or could the alternator be mal...

Hello Is it possible to get a fused switch which can have two serarate live inputs and two corresponding outputs. I want to put a switch in my boiler house which will isolate the switched live from my timer and also the permanent live which feeds my frost thermostat. Currently these can only...

Hello I have recently fitted a number of downlights (50W) and am just wondering how far the fibreglass insulation must be away from them. They have been fitted between the ceiling joists and the insulation id currently about 3 cm away from the light itself. As well as that there is a sheets...

Hi I removed the front of the switched fcu which controls my central heating and have discovered that the earth 'in' and earth 'out' wires are directly connected with a connection block. Is this ok or do the earth wires have to be connected separately to the two earth terminals provided on...