Q&A

Q & A of the Day – When replacing a domestic CU, should...

Dave asks this question about certifying a domestic consumer unit (CU) replacement. It has been answered by...

Q&A

Q & A of the Day – Can I calculate the Ze of this supply...

Ben asks this question about whether he can calculate the supply impedance of a system comprising LV panels...

Q&A

Q & A of the Day – Will 10mm2 SWA sub-mains cable to OK...

Ray asks this question about whether the sub-mains arrangement is acceptable for the loading of the new...

Q&A

Q & A of the Day – With this bathroom fan installation, must...

Norm asks this question, which concerns a bathroom fan installation as part of a lighting circuit - and its...

Q&A

Q & A of the Day – Is this metal shed’s electrical...

Eddie asks this question about an electrical supply and earthing system to a metallic shed. It has been...

Q&A

Q & A of the Day – Is it OK to parallel three smaller...

Phil has asked this question about whether three four-core cables in parallel can be used in place of two...

Q&A

Q & A of the Day - Which code of practise covers the...

Ray asks this question, which concerns the code of practise covering electrical power to a stationary fire...

Q&A

Q & A of the Day – Should I use a banjo with earth link on...

Ray asks this question about whether a banjo having an earth link be used on SWA cable at both ends, even if...

Q&A

Q & A of the Day – The bathroom lights dim when an...

Hamish asks this question about bathroom lighting that dims when the electric shower is turned on, and the...

Q&A

Q & A of the Day – With this solar PV system, should its PME...

John asks this question, which is about a PME-connected solar PV installation, and whether it meets BS 7671...

Q&A

Q & A of the Day - When this electric shower is switched on,...

Martin asks this question about a bathroom in which the lighting dims when the electric shower is switched on....

Q&A

Q & A of the Day – Is it necessary to use rubber safety mats...

Mike asks this question, which concerns whether rubber safety mats should be specified for when working live...

Q&A

Q & A of the Day – Is it possible to use flexible metallic...

Mike asks this question, which concerns the suitability of employing flexible metallic conduit within a gypsum...

Q&A

Q & A of the Day – Am I right about Ene3 energy monitoring...

Mark asks this question, which concerns Ene3 energy monitoring and the display requirements for it. His...

Q&A

Q & A of the Day – Is 300/500V cable OK for 400V circuits or...

Colin asks this question, which concerns cable voltage ratings, specifically 300/500V cabling. It has been...

Q&A

Q & A of the Day – If no access is achievable, and when only...

John asks this question, which is about the limitations on a domestic electrical installation certificate...

Q&A

Q & A of the Day – Is it legal for us to carry out this...

Matt asks this question, which concerns whether he is competent to legally carry out electrical installation...

Q&A

Q & A of the Day – Should I disconnect every luminaire to...

Colin asks this question, which concerns insulation resistance (IR) testing and whether every luminaire...

Q&A

Q & A of the Day – Why is it, that when the electric...

Ray Smith asks this question concerning bathroom lighting that dims when the electric shower is turned on, and...

Q&A

Q & A of the Day - What are the correct emergency lighting...

Lyle asks this question, which concerns the right pictogram to use with emergency lighting exit signs. It...

Q&A

Q & A of the Day – Where risk assessments are mentioned,...

Graham asks this question, which concerns emergency lighting in terms of fire risk assessments. It has been...

Q&A

Q & A of the Day – Is this 110V distribution system adaption...

Will asks this question, which concerns the use of standard 400V TP&N distribution boards as 110V distribution...

Q&A

Q & A of the Day – With a solar PV system, should it be...

Peter asks this question, which concerns the procedure for isolating a domestic solar photovoltaic (PV)...

Q&A

Q & A of the Day – The tested Ze is too high in this new...

Darren asks this question, which is about a new caravan tested for its external loop impedance (Ze) - found to...