overload

  1. F

    Burned out loft wiring and overload?

    I could use some help and advice for this setup in a new house. No clue about electrics.. just want to identify if this is safe or a bodge job (I didn't do it). The loft has been converted and has the wiring as follows... It's at the end of wire, which I believe is called a 'spur'. Wire up from...
  2. T

    Socket overload danger?

    In my kitchen there is a "Socket On Off" switch in the same console as the cooker master on/off switch. The cooker switch is almost always off. An extension lead to the "Socket On/Off" switch has the following appliances attached 1. 14.5w low energy lamp 2. Microwave over 650 W output 3...
  3. J

    Thermal overload

    Got a 7.5kw pump that’s blocked. Overload set to full load current of 13amp and fuses are BS88-2 20M25 but it keeps blowing the main fuses every time it’s blocked why would this be. The motor electrical is fine tested insulation resistance and resistance of winding. Thanks for your help in advance.
  4. J

    Thermal overload

    Can a thermal overload protect against fire?
  5. J

    Overload, Overcorrect and ADS...

    Hi all, probably a couple of silly questions here, I know. I just need some clarification if possible. Firstly. Is there a difference between overload and overcurrent? I've always assumed they are the same thing but recently I have been considering this more and I'm reasoning that overload...
  6. J

    What do I Set the overload to on a soft start

    My question is what would I set the overload to on a soft start. Do I use the FLC on the name plate or that value /1.73 as what it says on the soft start. Thank you for your help in advance guys.
  7. D

    Single phase 240v motor starter & overload with on/off switch wiring?

    Hi, Hoping you all can help me wire up my single phase 240v induction motor. Can someone please explain or even better sketch out where the wires need to go, I have a fair idea already just want some good advice before I continue. Switch is CK-5 10A 250v - SWITCH Thanks in advance!
  8. edexlab

    Overload issue

    I'm looking at a German made roller conveyor system 10 motors contactors controlled by a PLC Issue is customer says 3 mths ago motors started stopping and overheating, and would then start again when cooled down Overloads trip out PLC, input switches contactors off and someone presses reset...
  9. E

    8.5kw shower install

    Got called out to a shower tripping which has been recently installed by another spark. 8.5kw shower newly installed on existing 6mm2LSF cable not longer than 10m from single phase DB. Protected by a 40A RCBO Type B (shower current Calculated at 36.95A @ 230v) when clamped shower was pulling...
  10. M

    Setting Motor Overload

    Hi, How do you set a motor overload? I have read that you set it at the FLA of the motor but also that you should consider service factor. Which is correct? Thanks.
  11. C

    Thermal overload 3 phase to single phase pump

    Boiler panel controlling a 3 phase grundfos pump. Pump was tripping thermal overload... Pump replaced for a single phase grundfos by engineer etc... I was asked to convert the control circuit to single phase which I did. But still tripping on the thermal overload. Set it slightly higher for...
  12. J

    Why do soft starts tell you to set the overload at (delta FLC/1.73)

    Hi I have a question on soft starts. Why do soft starts have motor FLC delta /1.73. I’m confused as I understand star delta it is set at 58% of the full load current as the overload is in line with the windings. Thanks for your help in advance.
  13. Ironbones

    Still Learning -Whats this for connected to contactor and overload.

    Hi All Could someone explain this to me please. Connected to the contactor, over load are two coils (are they ferrite chokes) please see photos. Also why only two and not three one for each phase, marked with a 65 in the photos. The motor is used to control a blower unit, that moves a bean...
  14. Ian1981

    Overload protection to a central heating pump x2

    Is it a requirement to provide overload protection to a central heating pump rated at 2.77amps? I’m kinda under impression that an almost 3 amp pump jamming will get rather hot. I mentioned this to the heating installer who has requested we just installed 2 x isolators for the pumps through a...
  15. Adam_92

    Setting the overload on a direct online starter

    Hi I’m sitting my AM2 next month and have found out that you need to set an overload on a direct online starter motor circuit. I have tried asking my supervisor and assessor,tutor at college not one of them have given my a straight answer.. Is this the formula? Its 3 phase so formula is...
  16. D

    Anyone use the Hylec DOC contactors and overload relays?

    Type: Hylec-APL | Motor Control Gear | Contactors - https://www.hylec-apl.com/contactors & Hylec-APL | Motor Control Gear | Thermal Overload Relays - https://www.hylec-apl.com/thermal-overload-relays Got a project coming up where I need to remotely start about 20 pumps so looking at Hylec as...
  17. S

    Does this bell transformer have overload protection?

    Hi Folks I bought one of these Door Bell Transformer | Stevenson Plumbing & Electrical Supplies - https://www.stevensonplumbing.co.uk/door-bell-transformer.html?gclid=EAIaIQobChMIwLOp8p7A3QIV7grTCh3TzQvbEAkYAiABEgIxmvD_BwE as it's SELV and supports illuminated pushes, but can't find any...
  18. R

    Difficult overload omissions question

    Q12 Omission for circuit protection against overload may not be given to which of the following: 1. Fire Panel supplies 2. Control circuit for fire extinguishing equipment 3. Exciter circuits for rotating machines 4.Supply circuits for lifting magnets I'm guessing it's the control circuit but...
  19. J

    Overload relay with aM fuse

    Hi Can we use an aM fuse with overload relay,? If yes can an aM fuse protect the conductors from damage incase of short circuit Since i suppose aM fuses are used only for motor protection and cable. How will cable protection achieved when aM fuse is used with an overload relay Please explain...
  20. M

    1361-2 overload blow, time How long?

    Guys, Just to settle a debate i had earlier with another spark. 100A 1361-2 DNO fuse, constant current of 130A. He thinks it will blow within minuets. I think it will last a good few hours. (At least). I cant find any time/current info on 1361 fuses, but would quite like to know the answer...
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