General > General Technical Chat
Is this Wiring Legal? (NSW)
EEVblog:
--- Quote from: Ian.M on December 11, 2020, 08:40:06 am ---
--- 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!
--- End quote ---
Too much dicking around, just get them to fix it.
GlennSprigg:
--- Quote from: sibeen on December 07, 2020, 04:53:37 am ---
--- Quote from: Monkeh on December 07, 2020, 04:33:02 am ---
--- Quote from: sibeen on December 07, 2020, 04:18:36 am ---I'm not sure that the powers that be would be entirely thrilled to see a copy of the latest version of AS/NZ 3000 especially as they lke to flog it off for $A220.
https://www.techstreet.com/sa/searches/30039054?searchText=AS%2FNZS+3000%3A2018
I'd suggest that the mods of this forum get rid of that post before shit hits the fan.
--- End quote ---
(I know this is old from pages back... haha...)
There is a difference between a forum/server HOSTING & promoting a 'document', and 'someone' making a 'reference' to it!!
It is only one of many, actually available, and if 'someone' looks at it, (or heavens-to-bid, download it!), then you may be rest-
assured that no 'legal' entity(s) will be on the forums Coat-Tails!! 8)
(Mind you, many people here have since made pasted refs from it, which I'm sure were not 'typed'... :P).
On a funny side-line, back when I was 'in-the-trade' and had my own original 'bought' copy pf the AS3000, all we ever had
for free for YEARS, was up-dated paragraphs & sentences that we had to 'Cut & Paste' (with scissors & glue!!), so our Books
looked like a horrible ratty Scrap-Book after so many years!! ;D
I'd also like to clarify a few things, including 'Keeping-It-Simple' for the uninitiated...
In Dave's original photos from page-1, I mentioned thereafter that the use of such 'Junction-Boxes' IS legal, and they ARE here.
(Although the pref would be for a sep breaker/feed, IF the SWBD had facility for it. However, I did not know at the time that there
was no Isolator at the main condenser unit, which is a MUST/NORM for such 'hard-wired' devices for isolation. (Pref 2-pole)!
As for repeated comments about power requirements/usage, some people forget that reverse-cycle devices can be up to 200%
efficient which sounds weird, as they are Transferring energy! so it's not about just BTU's etc against current flow! :palm:
The greedy bastards wouldn't be losing anything, so they can get over it. It's readily available via much easier and faster methods than contacting me..
--- End quote ---
I was actually commenting upon the link that GlennSprigg put up on the first page of this thread which has the full document. That could get this site into legal difficulties.
--- End quote ---
james_s:
--- Quote from: Brumby on December 11, 2020, 12:43:49 am ---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.
--- End quote ---
Several years ago I had some people on another technical forum berate me for pushing pseudoscience when I mentioned that a heat pump gives you more heat into the room than it consumes in electricity. Nevermind the fact that I had one already, and apparently they'd never heard of little insignificant companies like General Electric and Trane that made them for decades :palm:
Resistance heat is 100% efficient at converting electricity into heat, but that ignores the part of the cycle where heat is turned into electricity in the first place which is far less efficient, not to mention transmission losses. The laws of energy prevent you from using a heat pump to heat the boilers at the power company to generate the electricity to run the heat pump but it does not prevent you from recovering a portion of the losses incurred turning heat into electricity by pumping heat from outside into the building.
noidea:
--- Quote from: EEVblog on December 07, 2020, 10:09:21 am ---
--- Quote from: Labrat101 on December 07, 2020, 09:37:18 am --- Australia does have Residential codes and this may have been changed for the Green energy thing.
To try and Phase out the old style AC systems .
--- End quote ---
IIRC Australia phased out 3 phase residentional and non-inverter units a long time ago as part of an energy reduction inititive.
--- End quote ---
Not so much phased them out per se, the gov just keeps lifting the MEPS barriers every couple of years and manufacturers stop importing ones that don't comply or are not worth re engineering to meet our standards.
noidea:
--- Quote from: EEVblog on December 08, 2020, 09:39:10 pm ---I heard back from them:
--- Quote ---"It is standard practice and within the all rules to add an existing appliance to a power cct as long as it does not draw above 10amps.
It also needs to have a dedicated isolation switch so the unit can be serviced and to follow code.
The current for a 3.5 kw system is well below the 10amp max.
When we are talking 3.5 kw it is cooling capacity not anything to do with electricity consumption.
Any kitchen appliance would draw much more than the AC.
However you are correct about the wires that are visible they should not be shown this needs to be rectified and I need to make sure that an isolation swish has been fitted so the unit can be serviced without turning off your power.
It’s extremely important to us to get this done correctly as we do not cut corners and need everything to be done to code."
--- End quote ---
--- End quote ---
You can download the manufacturers installation manual from their website, if you want to see what they say:
https://mhiaa.com.au/document/avanti-srk-zsa-w-dxk-zsa-w-series-installation-manual/
The brochure also says the unit can draw up to 9A max current
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