| General > General Technical Chat |
| Is this Wiring Legal? (NSW) |
| << < (22/37) > >> |
| Poty:
Well, in my humble opinion, it is not a "legal" connection. In my country, and under the suspect that this is a normal "home" aircon, (1 phase, split and low power one), normative commands that you MUST have an exclusive line from the main or the secondary board to the aircon. And it connects to the inner unit. There is a 3, 4 or 5 cable package that connects the inner with the outter unit, to provide power and command. That´s all. Intermediate boxes doesn´t exist. Ok, that´s the normative, and good aircon installers follow it rigorously. The rest of the universe? does what they want. |
| Brumby:
--- Quote from: Monkeh on December 10, 2020, 02:01:59 pm --- --- Quote from: Syntax Error on December 10, 2020, 12:28:26 pm --- --- Quote ---When we are talking 3.5 kw it is cooling capacity not anything to do with electricity consumption --- End quote --- Are they talking about free energy? KWin < KWout ? --- End quote --- No, they're talking about the refrigeration cycle.. --- End quote --- Quite so. Air conditioners (not evaporative air coolers) and refrigerators are the two most common forms of heat pump. A heat pump is a device which transfers thermal energy from one location to another. As such, it takes a lot less energy to do this transfer than create it (for the example of heating). It is not at all unusual to put 1kW of power into a system for it to give you the equivalent of 3kW of heating (or thereablouts). How much energy will be required is a factor of the temperature differential between the two locations (as well as efficiencies, etc.). If you want heat to flow from one location that is cooler to one that is warmer, then you will need to put in some work. However, if you want heat to flow from one location that is warmer to one that is cooler, then you will require less work - and, in fact, this happen with no energy input - just at a rate dictated by the thermal resistance of the situation. |
| Brumby:
--- Quote from: Ed.Kloonk on December 09, 2020, 11:37:16 pm ---You are fit and quite able to run by yourself two 2.5 twin and earths from the fuse box to that area, 1 for the A/C and the other to split up that other circuit with too many things already on it. --- End quote --- This is what I would do. Find out the requirements for running a cable and get that in place. Then all the sparky has to do is confirm the cable run is OK then terminate the ends. Quick and easy job for them and I get the satisfaction of knowing where the cable is and how it was secured .... and that the whole job is up to my expectations. |
| EEVblog:
--- Quote from: Brumby on December 11, 2020, 12:51:02 am --- --- Quote from: Ed.Kloonk on December 09, 2020, 11:37:16 pm ---You are fit and quite able to run by yourself two 2.5 twin and earths from the fuse box to that area, 1 for the A/C and the other to split up that other circuit with too many things already on it. --- End quote --- This is what I would do. Find out the requirements for running a cable and get that in place. Then all the sparky has to do is confirm the cable run is OK then terminate the ends. Quick and easy job for them and I get the satisfaction of knowing where the cable is and how it was secured .... and that the whole job is up to my expectations. --- End quote --- I paid for the installation, they are going to damn well do it! |
| Ian.M:
--- Quote from: EEVblog on December 11, 2020, 04:51:53 am ---I paid for the installation, they are going to damn well do it! --- End quote --- Yes, but are you going to be able to persuade them to do it reasonably soon, using a fully licenced and insured electrician, and fully to code so it passes an independent inspection? If their proposal and timetable to rectify the defective installation isn't entirely to your satisfaction, you may well be better off pressing for a refund of all monies paid less the trade cost of the air conditioning unit, so you can employ an electrician of your choice to do the job properly! |
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