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  • FIRST POST
    • Steven2521
    • By Steven2521 8th Nov 18, 10:51 PM
    • 5Posts
    • 0Thanks
    Steven2521
    Can i use a 240v without a transformer and instead get a lead to plug direct to mains?
    • #1
    • 8th Nov 18, 10:51 PM
    Can i use a 240v without a transformer and instead get a lead to plug direct to mains? 8th Nov 18 at 10:51 PM
    Recently purchased a Makita core drill but didn't realise(because at the time I hadn't worked in this environment) that it had the yellow adaptor instead of a3pin plug. Im hoping that I can just get a connector to change to a 3pin (like one you would use on a caravan) and plug directly into the mains?
    Is this safe?

    Thanks for the help 👍
Page 1
    • ceredigion
    • By ceredigion 8th Nov 18, 10:55 PM
    • 2,956 Posts
    • 4,071 Thanks
    ceredigion
    • #2
    • 8th Nov 18, 10:55 PM
    • #2
    • 8th Nov 18, 10:55 PM
    You need a 110 box

    110V Makita core drill going cheep anyone
    Last edited by ceredigion; 08-11-2018 at 10:57 PM.
    • Steven2521
    • By Steven2521 8th Nov 18, 11:01 PM
    • 5 Posts
    • 0 Thanks
    Steven2521
    • #3
    • 8th Nov 18, 11:01 PM
    • #3
    • 8th Nov 18, 11:01 PM
    ceredigion:

    What makes you assume that? Are you saying I can't plug a 240v straight to mains at 240v? Not being facetious, would just like it divulging.
    • Owain Moneysaver
    • By Owain Moneysaver 8th Nov 18, 11:08 PM
    • 8,819 Posts
    • 10,137 Thanks
    Owain Moneysaver
    • #4
    • 8th Nov 18, 11:08 PM
    • #4
    • 8th Nov 18, 11:08 PM
    if it's a yellow plug it will be a 110 volt drill for use on building sites, and must be used through a site transformer.

    If you connect it directly to 240 volt mains it will die.
    A kind word lasts a minute, a skelped erse is sair for a day.
    • GDB2222
    • By GDB2222 9th Nov 18, 12:19 AM
    • 14,805 Posts
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    GDB2222
    • #5
    • 9th Nov 18, 12:19 AM
    • #5
    • 9th Nov 18, 12:19 AM
    You need something like this.
    https://www.screwfix.com/p/portable-transformer-with-2-output-sockets-3kva/84144

    But, not only is it nearly 70, it says the weight is 17 Kgs. That's a fair extra weight to lug around.
    No reliance should be placed on the above! Absolutely none, do you hear?
    • EachPenny
    • By EachPenny 9th Nov 18, 12:35 AM
    • 7,952 Posts
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    EachPenny
    • #6
    • 9th Nov 18, 12:35 AM
    • #6
    • 9th Nov 18, 12:35 AM
    Before doing anything else check the rating plate on the drill. What voltage does it say on there?

    If you purchased it recently and haven't used it you might be able to take it back and swap it for a 230v one if necessary.
    "In the future, everyone will be rich for 15 minutes"
    • Risteard
    • By Risteard 9th Nov 18, 1:11 AM
    • 887 Posts
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    Risteard
    • #7
    • 9th Nov 18, 1:11 AM
    • #7
    • 9th Nov 18, 1:11 AM
    You will start a fire connecting a Reduced Low Voltage drill to a 230V supply. It is designed for a 110V centre-tap Earthed supply (with 110V between phases and no neutral).
    • GDB2222
    • By GDB2222 9th Nov 18, 3:00 AM
    • 14,805 Posts
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    GDB2222
    • #8
    • 9th Nov 18, 3:00 AM
    • #8
    • 9th Nov 18, 3:00 AM
    You will start a fire connecting a Reduced Low Voltage drill to a 230V supply. It is designed for a 110V centre-tap Earthed supply (with 110V between phases and no neutral).
    Originally posted by Risteard
    It certainly won't be good for the drill! It's a bit alarmist to say it will definitely start a fire.

    It's more likely the control circuitry will burn out and emit the magic smoke. Or the motor coil will overheat and one of the copper strands will snap or burn out.

    As this is a good quality drill, there may even be a thermal cutout that saves the drill from serious damage.


    https://www.youtube.com/watch?v=724J10XwC9w
    Last edited by GDB2222; 09-11-2018 at 3:03 AM.
    No reliance should be placed on the above! Absolutely none, do you hear?
    • General Applause
    • By General Applause 9th Nov 18, 7:08 AM
    • 13 Posts
    • 15 Thanks
    General Applause
    • #9
    • 9th Nov 18, 7:08 AM
    • #9
    • 9th Nov 18, 7:08 AM
    I am not convinced the OP should be allowed access to power tools at all.
    • Cornucopia
    • By Cornucopia 9th Nov 18, 8:15 AM
    • 10,944 Posts
    • 11,486 Thanks
    Cornucopia
    The drill's rating plate is the definitive place for this question to be answered. If it is rated 110v, or a 110v-based range (e.g. 110v-120v) then it cannot (and must not) be used on 240v mains.
    I'm a Board Guide on the Phones & TV, Techie Stuff, In My Home,
    The Money Savers Arms and Food Shopping boards. I'm a volunteer to help the boards run smoothly, and I can move and merge threads there. Any views (especially those on the UK TV Licence) are mine and not the official line of moneysavingexpert.com.

    Board guides are not moderators. If you spot an inappropriate or illegal post then please report it to forumteam@moneysavingexpert.com
    • Gloomendoom
    • By Gloomendoom 9th Nov 18, 8:16 AM
    • 15,118 Posts
    • 20,679 Thanks
    Gloomendoom
    Just cut the existing plug off and fit one of these...

    Never argue with stupid people, they will drag you down to their level and then beat you with experience. - Mark Twain
    • chrisw
    • By chrisw 9th Nov 18, 8:47 AM
    • 1,791 Posts
    • 1,029 Thanks
    chrisw
    What an anti-climax that video was!
    • shortcrust
    • By shortcrust 9th Nov 18, 10:27 AM
    • 2,149 Posts
    • 3,311 Thanks
    shortcrust
    Out of interest, why do building sites use 110v? Is it a safety thing?
    • Heedtheadvice
    • By Heedtheadvice 9th Nov 18, 11:16 AM
    • 993 Posts
    • 504 Thanks
    Heedtheadvice
    Yes! It is a safety 'thing'.
    • marlot
    • By marlot 9th Nov 18, 12:28 PM
    • 3,706 Posts
    • 2,835 Thanks
    marlot
    Out of interest, why do building sites use 110v? Is it a safety thing?
    Originally posted by shortcrust
    Yes.


    The transformer supplies a 110v (CTE) center tapped to an earth supply system so that the maximum voltage to earth does not exceed 55v - so much safer.

    The downside is that for the same power of tool, the cable needs to be much thicker. So a 1000W 240v tool will draw just over 4 Amps, but a 1000W 110V tool will draw 9 Amps.
    • Jackmydad
    • By Jackmydad 9th Nov 18, 12:36 PM
    • 4,491 Posts
    • 14,697 Thanks
    Jackmydad
    Out of interest, why do building sites use 110v? Is it a safety thing?
    Originally posted by shortcrust
    You will start a fire connecting a Reduced Low Voltage drill to a 230V supply. It is designed for a 110V centre-tap Earthed supply (with 110V between phases and no neutral).
    Originally posted by Risteard
    As Risteard implies, there's only a nominal 55V to earth, so it's much safer than the (again nominal) 230V to earth, as most accidental electric shocks to people occur from phase to earth.

    All machines used in industry and on building sites are 110V now.
    240V is generally for the domestic and DIY market.

    OP you need a transformer to run that drill.
    • EachPenny
    • By EachPenny 9th Nov 18, 2:54 PM
    • 7,952 Posts
    • 21,428 Thanks
    EachPenny
    ...OP you need a transformer to run that drill.
    Originally posted by Jackmydad
    Unless - as my and Cornucopia's posts allude to - some pl*nker has wired a 110v plug onto a 230v tool.

    It happens.

    The OP seems quite sure they have a 240v tool. I'd want to confirm or disprove that before plugging it in to anything.
    "In the future, everyone will be rich for 15 minutes"
    • southcoastrgi
    • By southcoastrgi 9th Nov 18, 9:26 PM
    • 5,439 Posts
    • 3,139 Thanks
    southcoastrgi
    It wouldn't be the 1st 240 drill I've seen with a yellow plug to fool the site agent, but as everyone has said check on the plate before assuming anything
    I'm only here while I wait for Corrie to start.

    You get no BS from me & if I think you are wrong I WILL tell you.
    • Risteard
    • By Risteard 9th Nov 18, 9:33 PM
    • 887 Posts
    • 323 Thanks
    Risteard
    Yes.


    The transformer supplies a 110v (CTE) center tapped to an earth supply system so that the maximum voltage to earth does not exceed 55v - so much safer.
    Originally posted by marlot
    Actually the maximum voltage to Earth on a Reduced Low Voltage (RLV) system is 63.5V - three-phase systems will have 63.5V between any phase and Earth with 110V between phases. The single phase (or split phase) variant has 55V phase to Earth with 110V between phases. (Again, as I mentioned earlier, there is no neutral conductor on the secondary side.)
    • GDB2222
    • By GDB2222 10th Nov 18, 9:35 AM
    • 14,805 Posts
    • 80,334 Thanks
    GDB2222
    It wouldn't be the 1st 240 drill I've seen with a yellow plug to fool the site agent, but as everyone has said check on the plate before assuming anything
    Originally posted by southcoastrgi
    That would work for some tools. It would just deliver a fraction of the normal power. A circular saw, say, just take it easy, and you'll get the job done eventually. But a core drill?
    No reliance should be placed on the above! Absolutely none, do you hear?
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