supply

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  1. A

    Confirming earth bonding continuity when cannot isolate supply

    Hi, just wondering how other sparks, go about confirming main earth bonding continuity when supply cannot be isolated, ze and pfc can be enquired wich is fine but what happens if you cant disconnect main bonding earth, is previous test results good enough to confirm?visual checks good enough...
  2. S

    Why am I getting a 420v supply from the power grid to my home when it should be 220v. All my applicances blew last night

    Why am I measuring 420v across the Live and Neutral feed into my home, when it should be 220v. My appliances have all blown
  3. Empire

    Economy 7 supply

    Hi All, I have just completed an EICR on a new (2017) conversion and noticed the E7 looked unusual. Is this the norm now to connect E7 to the main board feed from the meter? There is only 1 appliance in the flat requiring E7 and that's the tank with 2x immersion heaters. Both are connected...
  4. M

    Extension supply

    Hi just looking for some advice, Extension has been built onto the side of a house and they are putting in a separate consumer unit (just for the extension) and it will be fed off the existing consumer unit with a 16mm T&E. Distance between the 2 boards approx 6 metres. It’s a big enough...
  5. spud1

    Can I measure the level DC 'leakage' current piggy backing on an AC supply?

    Hi ! Much talk of the use of type A, type B and Type F RCDs recently. As we know all are specified at varying levels to ignore the blinding effects of transient DC currents, that are being superimposed on our AC circuits by modern technology. But is there a means to measure the level of this...
  6. D

    EV Charger Garage Supply

    I'm looking at installing a 7kW EV charger on an outbuilding with the following characteristics: EV charger will be 60 metres from the main fuse where there is an initial small consumer unit in the meter cupboard. Currently there are 2 extra small consumer units for each outbuilding, each with...
  7. B

    Splitting dno supply

    So my client owns a shop and is building 2 small flats above... the shop has a 3 phase service head supplying a 3 phase board via a switch fuse isolator.. My question... How do we organise tapping off that service head and getting two metered supplies installed in the flats? Ti
  8. Faultlessfinish

    Power supply type in industrial unit

    Hi everyone! I'm just after some advice regarding the power supply in an industrial unit I am about to lease. Does this unit have a 3 phase supply that I can use? I plan to get an electrician to fit some commercial fan heaters, but can't decide wether or not I already have 3 phase power that...
  9. G

    Annex supply, (wont give meter) , demand problems

    HI all, Ill keep this as short as possible, basically annex off existing Large house, didn't do demand as existing house as swimming pool and its a large 60'shouse told customer either upgrade existing house to 3 phase or new supply to Annex Annex . Electric UFH thoughout (1 bed annex with...
  10. multimarcus

    5v 60A Power Supply for LED Panels — Choosing good cable size

    Hello everyone! I would like to power 8 LED RGB panels, each takes 5v input and according to the datasheet 20W. (I take every consumes about 4A x 8 approx 32A) I have a Power Supply from Meanwell. It has a single output of 5v and 60A, I could also opt for a slightly smaller one, 40A if better...
    • multimarcus
    • Thread
    • cable cable calculations cable size led panels power psu size supply
    • Replies: 8
    • Forum: Lighting Forum
  11. H

    Adding sockets to an existing radial supply in a garage

    Hello all, I’m new to this forum! I work in commercial electrics (NVQ level 3, HND etc) but not domestic. I am confident to carry out basic domestic work but not familiar with the regs such as Part P etc. New build house, 17th edition amendment 3 consumer unit. I have a detached garage fed from...
  12. K

    UK synchronisation of storage heaters and Economy 7 supply timings.

    please could somebody tell me how storage heaters are linked/synchronised with the electricity supplier so that they switch themselves off and on to coincide with the timings of the Economy 7 rate. In my case, for example, the E7 timings are allegedly 11.30 to 6.30am but the storage heaters are...
  13. P

    4 or 5 pin plugs for 3 phase supply from inverter?

    I have recently bought a 3 phase bandsaw for hobby use and acquired a single phase to 3 phase inverter to power it. When I looked at buying cable and plugs/sockets for the supply I didn't know if I should choose 3P + earth or 3P N + earth plugs and sockets. What is the difference and which...

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