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Dear all. I have the existing distribution board and with 3 spare ways. The current distribution board have already supplied the existing load which uses the OLD colour (e.g. L123=Red, Yellow, and Blue, N=Black, E=Green Yellow). I want to add new 3 phase circuits/equipments using the spare...

Dear All I am aware that -BS/EC standard use different name for LV cabel e.g xlpe/lsf/sws -NBN Belgium use XVB-F2, XFVB-F2 or the like -VDE germany use N2YY, NYY, etc Does anyone have the link where we could have the comparablity table to easily recognised their comparability in...

Dear Moderator I do not involve in commercial installation. I am a post graduate students at a university (researcher), and we have been discussing this matter with other collegues. If my question is not relevenat to DIY, please just delete this treat. Thank you Pantaiema

How to over come it Hamonics the problem wich are backed up woth UPS. Active filter ?, Neutral double sizing ?. I am interested to know about the integral solution, advantage and disvantages of different solution Thank you for your time. Pantaiema

What typical Power factor on data centre ? In the room the data centre are served by Dedicated Distribution Board, Air conditoned and back up by UPS. What I mean with data center is that there are a building/large room with lot of PC'c, servers including blade servers Thank you for your...

bernardgreen What I mean with data center is that there are a building/large room with lot of PC'c, servers including blade servers Air condioned and backed up with UPS. IS there still problem with earth leakage as most UPS systems act as isolating transformers between the utility and...

Dear All, I am intersted to know the power requirement on data center: - Is there any RCD requirement for data centre ? According to IEE wiring 16 Ed & 17 Ed. If someone could also point me the Reg number on the regulation ??. - How much the max Earth Leakage figure on the Data center...

Does anyone could guide where could I find discussion forum about ligthing, daylighting. I am particularly interested in daylighting. Thank you for your time. Pantaiema

Magnetizing Current Inrushcould be several times of full load. Pantaiema

Dear Expert In "OFFICE" environment for ring socket outlets, which one is more appropriate/widele used. 32A type B MCBs or 32A type C MCBs. I understand the advantage of using Type B is that because they operate more instant than type C in case of overload but could cause nuisance trip...

Thank you very much for those who took time to answer my question. Yes indeed, I quote the wrong cable size. Regards Pantaiema

Dear Expert BS7671 tbale 54G mention that for: CSA <= 16 CPC size=size of phase conductor CSA 16<CSA<= 3 CPC size=16 CSA >35 CPC size=CSA/2 My question is that: it is also for 3 Phase Circuit or Just for 1 Phase Let say I need to supply TP+N...