Recent content by plugsandsparks

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    dismantling Air con in commercial setting

    Would be surprised if pumping down to release the high and low pressure lines is not covered by Fgas regs. You would need to be competent at pumping down, you would need gauges to make sure you had reached vacuum in the low and high pressure side and you would need to confirm the receiver has...
  2. P

    hand tools when your old and falling apart

    I have mild arthritis in my right knee, lower back and hands. It all kicked off during Covid when i was working flat out, as holidays were too risky and my clients were still active. Shortly after an intense project i was forced to take 2 weeks off as my knee was so swollen i could not get in...
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    I finished a job months ago , now the customer says somethings not working. Do I charge ?

    I think there is an element of the client not wanting to admit to touching the electrics to an electrician for fear of unknown consequences. I regularly get called out , commercially, and when i ask for "the story" i am often met with " i know nooothing"... lol However, one of the funny ones...
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    Water Temp Gauge wiring

    You will have to install the sensor and connect the green wire. This gauge is also for Negative earth vehicle so also check your negative battery terminal does in fact connect to the chassis / engine. Suggest test it off the vehicle with the correct sensor. As a minimum you will need 12V+ve on...
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    Water Temp Gauge wiring

    Is the temp gauge using an electrical temp sensor or is it mechanical using a capilliary tube ? Make and model of gauge will help
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    Lowering amps for charging system.

    It looks like the Anti-Gravity battery is similar to mine, although smaller. Mine also has some in-built protection which made it MSA approved for Motorsport. The link is very specific about using a modern alternator with regulator/rectifier as you have mentioned. Its the voltage regulator that...
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    Lowering amps for charging system.

    Not fully understanding your terminology used but will give you some principles. Simple vehicle battery chargers using either a dynamo or alternator or magneto will generate a voltage , say for a 12V system, this will produce a voltage of between 12 and 14 V depending on the speed of the engine...
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    Fitting your own air con unit?

    Dont want to appear pedantic, but Fgas regs (which are statutory) dont allow using Fgases to push air, residual N2 and moisture out of the system. OK R290 is basically propane, but it is a small charge so using some of it to purge does appear a bit odd. Anyway this is getting like a DIY thread...
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    Fitting your own air con unit?

    Its a real problem, brazing is always preferred but i had an instance when i was doing a "cabin in the woods" - one outdoor unit and 3 indoor units, so lots of branching. I brazed most joints away from the job, under cover, no problem, but the last joint meant i had to braze outside, in the...
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    Fitting your own air con unit?

    The last line is the issue when you are flaring your own pipes. Most simple units have enough pre-charged gas for a modest run of pipework suitable for Domestic so no need to add additional gas. This is how i do it. 1. Flare pipe-ends using a specific orbital flaring tool using lots of hydraulic...
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    Fitting your own air con unit?

    The gas used is R290 which is basically propane, its a great gas for A/C systems in terms of efficiency so no issues there, its main stumbling block (not really an issues for you) is it does not scale well as you need gas detection and ventilation systems to manage the build up of propane should...
  12. P

    Odd E.V. home charger question

    Install a camera to check if someone else is using the charger
  13. P

    VW Passat 2012 TPMS light on

    Only come across 2 types of TPMS, rolling diameter using wheel sensors through ABS module and individual tyre pressure sensors on the wheels (rather inside the wheel rims), you have ruled out pressure sensors via the tyre shop so it only leaves the former. If your car actually can display the...
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    VW Passat 2012 TPMS light on

    cars of that age inc, VW, Audi, BMW use calculated rolling diameter to detect a flat tyre. They can typically throw a fault when changing tyres for new or putting winters on. There is a reset button when this occurs which enables the TPMS function to re-calculate the new setup. In the Polo for...
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    Help re new 3ph 200KVA supply CT meter provision

    I hope this is not a trend by our energy companies....... a 200KVA supply is pretty standard for larger commercial . Are you sure you are talking to the right part of the energy suppliers, i.e. Larger Business customers, not Domestic./small commercial as , as far as i am aware meters above 100A...

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