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Thanks a lot

Hello, Help please. Which table do you use for Max EFLI? in BS7671 table 41B2 says Max efli for a type B 32amp MCB is 1.5 ohms but table 2D in GN3 says 1.2 ohms Anyone else have this problem or am I being blonde :?: Thanks in advance.

Hello, could anybody tell me if a 16A radial to a FCU which supplies a boiler should be on the RCD side of a split load CU or the non-RCD side. Thanks in advance

Thanks so far. I haven't a figure for Ze but ZS has been measured at the sockets since and it is quite high. 1.9 at the highest R1+R2 point of the circuit. which I believe is higher than it should be. 1.12 for type B 32A breakers. Looks like a new ring main!!!! Thanks

Hi, A question for you experienced electricains out there. My house is having a new consumer unit and I would like the ring main to stay wired as it is. A test was put on it and the results were as followed, r1 was 0.58, rn was 0.56 and r2 was 1.38, I think the cable is 2.5mm with a 1.0mm...

RMS, The ring isn't 100m2, its only a 2 bedroom house. RF lighting I know about EIC's but what is a building regulation complience cert? Thanks.

RF lighting and breezer, thanks for taking the time to reply, that is a great help. The warning notices, is there a website where I could look at one and where it should be fitted. This is all good information to be armed with when getting quotes, thanks.

The house was built in 1975, will the cables be ok?

Hi, I have recently discovered that my consumer unit needs changing. Before I call in the electricain I need to know what work needs to be done. I have a 4 fuse wylex CU with 1 ring main, 1 radial lighting circuit, shower circuit and power to my house alarm. My questions are the house is a...

Hello, No RCD protection, its a wylex fuse board with 4 outlets, Ring for whole house, lights, shower and alarm. I imagine i'll need the CU changing and the shower ciruit rewired in 10mm, best call in the electricains. Thanks for all your help.

Hello again, Thanks for the quick reply Lizzieg, I have made a mistake though. The shower is a 8.5KW, could you please advise again on the cable size please. I have consulted an OSG and table 6E1 on page 123 states that if enclosed in conduit with 1 two core single phase then a 6mm cable will...

Hello, I have a shower circuit in my house and I wish to find out if it is acceptable. A 6mm cable on a 32 amp breaker runs from the consumer unit to the kitchen 45 amp cooker switch (with 13A socket). The cooker is gas so switch is not needed. The 6mm cable runs from the switch through the...

could you explain this a little further please? I know, thats why it will be checked before its made live

Hi, I intend to put a sub main into my shed. I'm not sure how the armoured cable should be wired into the CU. Should the armour be conected to the MET or the earth terminal inside the CU? I know it should be on the rcd side of the CU and I know the importance of Part p and it will be checked by...

My consumer unit needs changing as I have one of the old fuse types with only 4 fuses. 1 for my shower, 1 for both rings upstairs and down and 1 each for the lighting circuits. I have also noticed that my main fuse is marked as 60/80A. Could I get the leccy board to come around and change this...

I wish to fit a motion detecting security light to the back of my house. Can I wire it into a 3 pin plug and plug it in to a socket on the ring main or does it have to be connected to the lighting circuit?