Search results

I have a table saw with an induction motor that when off load appeared to stop moving under Flu lights. After several near misses while wearing ear defenders :shock: I changed the control gear in the light to a HF type (note HF high frequency not HPF high power factor) CFL lamps should also...

Twin core and separate earth is old, probably 50 years+. If humanly possible replace it, if you really cannot bring yourself to lift floorboards etc. Have it tested, it will probably fail and you will have to replace it anyway :) . If you can't bring yourself to having it tested you can...

EFLI = Earth Fault Loop Impedance = The total impedance of the Live from the Substation to your house, to the fault and back through the Earth to the substation. I think you mean MCB not MCCB MCB = Miniature Circuit Breaker as found in a consumer unit. MCCB = Moulded Case Circuit...

The problem with shower circuits is they only get used for a few minutes at a time so overloads like using 9KW (37.5A)from a 32A MCB often go unnoticed. 40A from a 32A MCB can take over an hour to trip! You need to check the route the cable takes from CU to Isolator to Shower. If and only...

Some of the RCDs with a white earth do have a voltage trip if N-E exceeds 50v this protects against supply reversal or if the incoming N fails. Sailbadthesinner

1 Yes RCBOs should all be fed from the main switch not the RCD. 2 Preferable but expensive best on the circuits you don't want nuisance tripped by other faults ie freezers or those you foresee being troublesome ie outside circuits (not that any new wiring should ever be) The other option...

Using conductors in parallel is unusual but perfectly okay (Regn 523.8 17th or 523.02 16th) Providing the cores are identified, colour sleeved ie two brown, two blue or marked L and N. It can be a cost effective way to run long SWA. The fifth core as an earth (cpc) in addition to the armour...

The 1000W rating will be the max audio power but only briefly! There are many differant ways of rating the power output from audio amps and the manufacturers use the one that sounds most impressive! The power consumption figure of 135W is what concerns you for your transformer. I under rate...

Any good hire company should show you how to operate it when they deliver. My experiance: I hired one to dig a pond 20'x15' and remove an old rubble heap. To start with you move one control at a time til you get the hang of it then within half an hour you start doing two or three movements...

Water Seal applied to the outside of brick work can cause as many problems as it cures. Bricks need to 'breathe' Much of the moisture comes from water vapour from the humidity inside the building migrating out. If you trap it with Water Seal applied to the outside it will collect into damp...

I have a concrete garage that I wish to use as a workshop but the bare concrete floor slab that has no Damp Proof Membrane. Does anyone know of a Self leveling screed or similar that will produce a hard smooth and waterproof finish at a reasonable cost? The concrete is in good condition and...