single phase | Page 8

single phase

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  1. A

    3x RCD single phase board?

    Hello, does anyone know of an off the shelf 3 RCD consumer unit? I've got a CU change coming up, with 16 circuits. Not a greater than normal load, just the circuits have been divided up when a rewire was done many years ago, and there is to be a further 3 or 4 new circuits in an extension. I'm...
  2. P

    Single phase 240v motor wiring

    Please help. I have recently fitted a new pump, pressure switch and a 2.2kw(3HP) single phase 240v, 2 pole electric to my compressor. However I am at a loss at how to wire it. I have been trying to google it for 3 days, but am getting conflicting answers. It is a start capacitor and start run...
  3. P

    40A single phase contactor + timer motor control

    need some advice really bee asked to wire in a timer to a swimming pool heater as it is on constant run, which I explained is how they are supposed to run. does anyone know of a single phase 230v contactor of AV-3 type I can use with a simple manual clock timer switch, or suggest any other...
  4. B

    3 phase to single phase

    Hi everyone, newbie here to this forum. i have been asked to see whether it is possible to adapt 3phase supply to single phase using 5 x pin & 3 x pin 64a trailing sockets it is to run a catering van which has equipment pushing 50a if everything was on. i was thinking of using 10mm braided cable...
  5. C

    Single Phase Motor Connections

    Hi guys, got a single phase motor to install tomorrow. Its a Ebara 1.5kw capacitor start capacitor run type. Have fitted single phase motors of this type before however there is more wires at the terminal box of this particular type and not quite sure about the connections. The terminal box lid...
  6. T

    3phase breaker made of 3 single phase breakers

    Hi guys, Is there a difference between 3 single phase breakers next to each other (with a linking bar) and 1 3 phase breaker? Does the 3 phase breaker have anything special in it or is it just 3 single phase breakers stuck together with a bar in the switches? Cheers, Tim
  7. S

    Three Phase to Single phase Online UPS with a capacity of 15KV

    I want to build a three phase to single phase online UPS with a capacity of 15kv that can hold a backup for 15 minutes. Can anybody provide with specific circuit diagram, technical specification and stepwise instructions to do that? Thank you!
  8. A

    3 phase to single phase conversion

    Been asked to do a conversion of 3 phase 4 wire supply to a single phase . Swap 3ph mcb for appropriate single , identify two of the cores as brown and blue at both ends make the other two earth. Re calc volt drop for 230 . Any objections?
  9. E

    Wiring of the Distribution Board with RCD , Single Phase (Plz Help)

    i want to install a single phase energy meter with RCD Distribution board..So i found a diagram here..can i apply this in my home installation. please take a review Wiring of the Distribution Board with RCD I would be very thankful if someone help.. Thanks in Advance.
  10. P

    Single phase motor fault finding.

    Looking for some help with motor fault finding. I've got a small woodworking router that i broke a couple of years back, given that we've just been covering very basic motor theory at college i want to see if i can either fix it or at least understand what's wrong with it if its terminal! This...
  11. C

    3 phase to dual single phase

    Hi, I have 2 single phase consumer units I want to feed from a 3 phase supply. There currently exists some 3 phase SWA, but it doesn't reach either of the consumer units. The installation is indoors. Each consumer unit has a RCD on it already. Can I just use a junction box at the end of the...
  12. M

    motor 3p running two run caps 15mf to single phase not running

    hi help required if poss? called out machine not running food shredder quite small found 15mf cap lid was cracked (cap no capacitance on terminals) 2 caps in series 15mf motor taken of one cap so bridged out thermal overload got machine to run very slow stopped. could not get 15mf cap but...
  13. cashnotakite

    single phase RCBO'S on a 3phase board

    hi I'm having a problem with an RCBO tripping out and it is unlikely to be a N-E fault. I suspect the associated neutrals have been terminated into the wrong RCBO even though there is no load connected as all the RCBO's feed unused sockets. The board itself is 3 phase and I am wondering if this...
  14. P

    Need to switch neutral for single phase domestic DB

    Hello, I was doing a job today connecting up the SWA I've put in to supply the electric gates. The DB is a three phase connected up as single phase. They have taken the 25 MM into the L1 of the 3 pole Main switch but the neutral goes straight to the N bar. Its a PME system. Am I right to say...
  15. M

    Metalclad DB, Single Phase with 12 useable ways - No RCD's required

    I'm trying to source a suitable metalclad DB with a metal door/flap, and with an IP rating as high as is available off the shelf. This to be located in a Chinese takeaway that has a high pollution of the atmosphere, caused by cooking oil/fat. It may be necessary to fit a standard metalclad DB...
  16. S

    17kW single phase inverter?

    We have a customer with an interesting problem! Proposed install is on a split phase supply @ 460V 50kW system with existing DNO permission - As there is a new transformer on site, the DNO have said they will make an exception and allow up to 200kW on the split phase so 50kW no problem. The...
  17. C

    wylex nhtn6mr to feed single phase c/u

    been to look at a job today, i don't normally have anything to do with 3 phase so don't shout at me to much, customer as just moved into a unit which as the above distribution board in supplying power to the original sockets, lights and alarm system, he as put the first fix in himself for some...
  18. S

    3 phase or single phase

    Hello all I have been asked to supply power and cableing for an out side event total loading will be 41kva no three phase required .but my question is as I have never really needed a large genny am I better off using a single or three phase genny thanks for any advice given paul
  19. D

    Single phase 32/16 amp sockets from 3 phase

    Hi, First post on the forums here and some very useful information. I am wondering is it possible to install single phase sockets (both 16amp and 32amp) using a 3 phase supply? I am intending to get a qualified electrician in to carry out the work but want to ask is it possible firstly...
  20. G

    Single phase installation off a three phase cutout and distributors fuse details??

    Hi guys, Just finished a job installing communal lighting and power in 7 blocks of flats, The supply for each building is the same a TNS 3 phase cutout with a feed jumped off one of the phases to the meter and from the meter supplying our single phase CU, the flats are then jumped off various...

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