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  1. I2C

    Hello everyone, I'm new here

    Welcome to the forum efgg!
  2. I2C

    Hello folks, just joined up

    Welcome to the forum Tim!
  3. I2C

    HELLO! How to know how much you uk socket can take?

    Completely agree! While most socket-outlets are rated 20A, the plug-top fuse will be limited to a maximum of 13A (approximately 3kW). Remember that according the the ESQCR, the voltage used in calculations is 230V rather than 240V. We use 230V because current is inversely-proportional to...
  4. I2C

    Hello Everyone, Figured I'd Register.

    Welcome to the forum Christopher!
  5. I2C

    Just joined the Forum and wanted to say Hello

    Welcome to the forum Nitram!
  6. I2C

    Lighting with key switch

    I've been working long-days haha. It's cool.
  7. I2C

    Understanding breakers and RCD, un-vented cylinders

    Short Circuit In simple terms, a short-circuit is where the line & neutral conductors touch each-other, resulting in a huge amount of current flowing through the circuit (and circuit-breaker) which causes it to rapidly trip. Over-Current In simple terms, an over current occurs when the rating...
  8. I2C

    Money grabbing training centre

    The course lasted around 8 months (two weeks on, two weeks off). It was a lot of money, and I know other colleges offer the course at a cheaper price. Like I say, it's the tutors which make the difference, going the extra mile where needed and having exceptional knowledge.
  9. I2C

    Lighting with key switch

    I'm specifically talking about this example using conduit :thumbsup:
  10. I2C

    Heads Up - Halfords.

    Halford give-out trades-cards to electricians? I've always used my freind's card (a mechanic) when buying oil, etc. I presumed you had to be a mechanic to obtain their trade card. What did you say to them?
  11. I2C

    Diversity on AC condensers

    When calculating diversity, the recommended values are only advice. Sometimes it's necessary to increase/decrease their values based on the circumstances. If you're unsure, you can't go wrong with 100%.
  12. I2C

    Understanding breakers and RCD, un-vented cylinders

    I'll explain the following in basic terms for better understanding (other electricians, I know my terminology but please ignore for this post): RCD (Residual Current Devices) - Trips during earth-faults - Doesn't trip during short-circuit faults - Doesn't trip during over-current faults An RCD...
  13. I2C

    How a big HRC Fuse is made..

    This is a three-phase fuse which is installed on each of the individual phases. It's imperative that all phases simultaneously disconnect, opposed to a singular phase. The "firing-pin" is used to trigger the disconnection of the other phases during a fault to ensure safety.
  14. I2C

    How a big HRC Fuse is made..

    Agree with previous comments, these are for use with HV (High-Voltage). Why do they contain an explosive-charge? Put simply, high-voltages can jump through the air (like a police taser for example) and higher-voltages will jump considerably further than lower-voltages; the result is referred to...
  15. I2C

    3 phase to single phase

    Fully understood and I agree with you. Upon further investigation, I'm unable to backup my statement regarding phase-balancing with any regulations, and therefore I stand corrected. It seems strange that there doesn't appear to be any requirements in the regulations regarding phase-balancing...
  16. I2C

    3 phase to single phase

    I'm surprised you asked, but of course: BS7671 Amendment 3 411.3.3 'Additional Protection' (i) states: "Additional protection by means of an RCD in accordance with Regulation 415.1 shall be provided for: (i) socket-outlets with a rated current not exceeding 20A" BS7671 Amendment 3 415.1...
  17. I2C

    Gripple unistrutt replacement

    Completely agree! It's a simple case of evaluating costs: If the additional cost associated with an innovative time-saving solution outweighs the cost of labour involved with other existing solutions, resulting in savings which are greater than the potential risks involved; then the new...
  18. I2C

    Continuity RFC error??Help please

    The Kewtech KT63 user-manual shows that the maximum continuity result shows as 19.99kOhms, meaning that the conductors tested are open-circuit. The scary thing is, ring-final circuits can still function as normal when a single live-conductor is open-circuit, presenting a danger of over-current...
  19. I2C

    Lighting with key switch

    Completely agree. When using singles, the permanent-line usually goes directly to the switch rather than the light. In all honesty it doesn't strictly matter, the advantage of using singles is that your circuits can be shorter, by connecting from A-B directly instead of requiring additional...
  20. I2C

    3 phase to single phase

    Completely agree with previous comments. However I'm a little concerned that you've asked this question, given the increased-dangers of three-phase, while the answer should be common-knowledge for a competent person. Please don't be offended by this, perhaps there's more-to-it and a bigger...

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