three

three

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  1. MaintenanceSpark

    Three Core & Earth

    Silly question I'm sure, but I'll ask anyway. On a 2 way lighting circuit the black and grey conductors get sleeved brown to show they're line conductors and I'd like to know why as black and grey are line conductor colours anyway so surely if the grey isn't sleeved blue it's a line and if the...
  2. PCBWay

    Three Exhibitions PCBWay Will Attend

    We are excited to bring the news that from September to November this year, PCBWay will participate in three new exhibitions. They are Electronics & Applications 2023, SIANE Industries 2023 and Advanced Engineering 2023. During each exhibition, PCBWay will showcase a diverse range of samples...
  3. A

    Three phase cable to wire single phase

    Can I use three phase cable to wire single phase
  4. R

    What diversity factor to be applied to a three phase food holding unit?

    Hi there currently doing some diversity calcs for college work and had a query about what diversity factor to apply to a 16A 3 phase commercial food holding unit. I'm thinking that this equipment will be only used in the day time(breakfast, Lunch and Tea (what we call the evening meal- dinner...
  5. J

    UK Three phase dust extraction auto start

    Hello, I am currently working with 2 separate circuits, one for the dust extraction and another for a circular saw. Both circuits have an isolator with 3 phase and neutral then each goes off to its own dol starter. I was wondering if there is a way to make them both turn on at the same time...
  6. T

    Mounting height for residential three phase dis board

    Hi everyone, this ones a first for me but weve been asked install and use a three phase supply in a large new build house. The 16 way dis board is going to go in a ground floor store / plant room and will give us either 48 single phase ways or a few less if we use some three phase 22kw EV's...
  7. J

    Single or three phase? Whats popped?

    (Thought I'd already poost this Q, but I cant see it, so I'll try again) We have some work going on in one of our buildings atm. On of the chaps has drilled into a cable that was buried in a wall in a fairly random location, knocking out the power to one of the flats (and giving him a nasty...
  8. W

    What type of circuit breaker would be used for a three phase circuit?

    Hi , Currently doing a design project in college and I need to pick a circuit breaker ( In device rating and type) for a food holding equipment unit that requires a 16A 400V three phase and neutral supply that is supplied by 5 core SWA. I think I should pick a 16A 3P+N RCBO but wasn't completely...
  9. GeoffatMM

    Three Phase Cable Sizing

    I am an enthusiastic retired engineer rebuilding a barn in France from scratch and am having problems sizing my incoming electrical cables. I have had answers from 4mm to 50mm cross section from various pages on the internet so you can understand I am a bit confused. There are two main cables...
  10. E

    Three Way Switch Troubles

    Hello - Looking for assistance regarding a problem with my three way switch what was working over the past four months with no problems until this week. I went to turn on one of the three way light switches and nothing happened. I went to the other three way switch on the circuit and noticed...
  11. M

    Help connecting three way switches

    There is two hot wires one in each box. What is the proper way to connect the four wires to the switch In each box?
  12. Khanzada

    Load calculations on three phase board

    Costumer have 12 flats and need to feed for each flat a prepaid meter and consumer unit within the flat , the main supply to building is three phase , my question is how to distribute the load for 12 flats, each flat have a load of 63A. Main supply is three phase .
  13. P

    Three Batteries have Died in 11 Months Alternator Appears OK.

    Vhicle: Fiat Grande Punto 1.2 Petrol. 24/9/2021 The original battery died and was replaced: I'll put that down to old age. It was replaced with a Lion brand 40 AH that I was later told was not the recommeded battery for the vehicle. A month later the Alternator Sized Up and was replaced...
  14. Peter55

    Earthing question - three phase into main building, then single phase to EV charger

    Hi there, new to the forum and in final stages of completing C&G level 3; need to complete design project to complete. Am struggling to get my head around how to draw up correct circuit diagram showing EF Loop path for EV charger where initial supply is described as 'three phase TNCS' feeding to...
  15. M

    Three 2.5 t&e feeding a socket and a fused spur

    I'm revamping the kitchen electrics, 1980's property. Majority of the sockets have a couple of cables going in/out of them, with the only exceptions being a couple of sockets tee'd off fused spurs and fed by single cables. However, I'm perplexed by one area. By the side of the gas hob there was...
  16. G

    How do I add a subpanel using three 20 amp breakers with 12AWG from the main panel

    Current Situation: I have three 20amp breakers with 12 AWG in the main panel. Each wire ends in a 3x2.5” metal box along with one neutral wire. There are two yellow wires, a black wire and a white wire. One yellow wire is attached to a 240V outlet and the other is attached to an orange wire...
  17. W

    CT8775C Thermostat three wire heat only (jumper intact)

    Which terminal is used for ground to verify power supply? Thank you
  18. D

    I need some help! ASAP, questions a put wire, three ways and stoves.

    This is the digram that i came up with, i am running mostly 12-2, on 20amp for everything. Except for my electric stove, i was planning 6 gauge wire on a 50a. i am trying to wire in two three ways light switches, and was going to run 12-3 between them and 12-2 to the lights and the service...
  19. A

    UK How to wire three LED to main with one cable?

    Hi all, I am new in this forum and would like to understand how to wire to the main supply x3 of the equipment that I attached as a picture? I had a normal light and wish to have three of those leds instead. Is it possible and if so how should I wire it? Many thanks in advance. Adrianna
  20. Diocm7

    Two eletric meters and three readings.

    Hi there I recently moved to a new flat and it have two different eletric meters. The first one is a regular one and the second one is one for the economy 7 tariff I think sibce it have meters for low and normal. Wouldn't only the second be enough? I attached the photo. Thanks for the help

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