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Where the link is on the old switch, move them over to the new commons on the new switch. Then you move the L2 from the old switch to the new L1 switch. Then you move the L3 cables from the old switch to the L2 on the new switch. Make sure the circuit has been isolated prior to changing...

Hi Everyone I had a job to do a pir in Harrow on the hill this morning on a one bedroom ground floor flat, here are some pictures to show, would like some opinions on some factors regarding the installation. 1 - Sockets and spur was directly above electric hub, Owner suggested to put a...

Pir

Thank's big_sparks, I Found the legislation for lux figure's for dentistry, they are as : Operations: -general-----300 -mouth------8000/22000----Dental inspection luminaire required. Treatment: -general-------400/500 -mouth---------1000--------Examination luminaire required...

Thank's big_sparks, can you give me some example say for the first room, which is the treatment room, area size 12.02 sq metres? cheers

Thank's all Waiting for lighting software so i can measure lumen for area. Any sugestion how to get a copy from manufacture's as have tried but haven't recieved one, and any advice on lumen calculation?

Thank's all, i have started the design work as you will notice i have got the area measurement from A1 plan, which is in scale 1cm to 50cm. however the next stage is a bit complex and require's manufacture data which i need to obtain soon as. Then next to calculate maximum demand. The...

With christmas here am looking for all the help i can get on this subject due to time constraint's. thank's all

Hello all Viewer's Im doing a project design for a two-storey dentist sergery, would appreciate help to select using manufacturer's data, select suitable luminaires for each area.( Using possibly data from Thorn Catalogue). all other suggestion appreciated. Ceiling's are as follow. All...

Hi All............................................................................................. Just have started my project at college, need some fomula's to calculate area from centimetre's into square's, is it time's 50, then divide by 100 and anybody Know were i can get some...

can you point to me were you got these figures for the cable sizing for pyro, swa and xlpe as i was checking in the regs but couldn't find them. if they are in the regs please tell me the page no' on BS7671....

Hello spark's i am querying on a job i visited at Willowbrook Refferal unit, this is were they send children with special teachings. The unit is having a new gym room, the electrical work was done by some contractor who i haven't met but did talk to about the work carried out by himself on...

Does anyone know what sort of connecter's are available for fluorescent light's, that can be used for disconnecting for maintenace purpose's in an office viod suspended ceiling with mmt2 trunking? An pound of prevention is better than an ounce of cure......

how do you expect anyone to read the small print, it's to small man. it's work im doing in the old labour office's now used by Southwark council. mod

thanks mod. what's the Edit Feature. sham

Sorry an error occured in my sentence. I men't from the junction box use 1.5mm 3 core flex to fluorescent lights. my apologies.