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That would do the job, i was just thinking that it would be easier to replace the double socket with the switch & socket unit i suggested as that should fit in palace of the double socket. Staurt

It may have a knock out on the bottom, but most dont. You would take the switched output from this switch to an outlet facia such as http://www.tlc-direct.co.uk/Products/BG979.html which will have a knock-out on the bottom. As for the cable size, you will need to maintain cable sized...

It will depend on the size of the unit. Look in the hand book for the unit, or if its still current, find it in a shop and it will show typical figures on the efficiency label. I don't think 2.1kWh/24h is very bad. I know most fridges nowadays average between 60 and 120w (1.44 to 2.88kWh...

Depends on if he wants the flats to get a bill from utlity company (meaning new and separate MPAN numbers) or, if he will receive the bill for the existing main meter then sub meter the flats and rebill. If its new metering/MPAN/bill from supplier then you may need to contact the supplier to...

If the existing socket has its own 30A supply as you say then replace the double 13A socket with a cooker outlet with built in socket for the gas cooker ignition (which will be just a few watts) such as: http://www.tlc-direct.co.uk/Products/BG971.html Im curious why the double socket would...

Unless the pump is sending water dozens of feet into the air and the lights arent 500w flood lamps you would be ok with 13A. 13A is around 3000W of power, aka 3kW. Most of these pond pumps are a few 10's of W and the lights wont be much either. Armouring every cable would be overkill id...

There would also only be 12vAC output at the rated load. With no load, or light load the voltage will be higher, factor in the peak issue and its even more!

The Armour can be used as the appliance protective earth, such that for single phase you only need 2 core for live and neutral. For 3 phase you use either 3 or 4 core (depending on balanced/unbalanced load) . You rarely see a copper core for an earth connection in a 3 (3 or 4 wire) phase...

The UK mains can go up to 254v maximum average but shorter term averages are allowed. I've seen many bulbs being rated at 220v for sale in the uk! A general rule is a 5% change in voltage yields: - halving or doubling the lamp life - a 15% change in luminous flux - an 8% change in...

Probably the adapter wouldn't be damaged by such a short term overload. Also, i doubt that they would specify a 500mA supply and use all 500mA, i wound t continually load these at more than 80%, or 400mA so i doubt the bike would damage the adapter. As for the AC issue, if its going straight...

Thanks for the info, im not sure if its TN-C-S or TN-S. The header is one of the Lucy Switchgear TPNE100 units and the neutral and earth blocks look to be under the same plate and there are 3 fuses., if it was a TN-S then id have thought there would be clearly separate neutral and earth...

Hi, Can somebody please post a pic showing a 100A 3-phase supply header with the covers and fuses removed but the wires in place? Im an electrical engineer and am having a non-meeting of minds with a senior colleague over our office supply. He thinks the earth is the cable armour and...