Makes you wonder.

Came across this the other day in Wikipedia, very apt.

The DunningKruger effect is a cognitive bias in which unskilled individuals suffer from illusory superiority, mistakenly rating their ability much higher than is accurate. This bias is attributed to a inability of the unskilled to recognize their ineptitude.

 

Ha, sometimes spend an entertaining hour or so on a long weekend at the Port Hughes boat ramp, unbelievably crowded, some of the launch/retrieval attempts are hilarious, talk about road rage, have even seen fisticuffs.

hako wrote:

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Bob - this sort of thing can also be avoided or at least not cause damage if all cables are fused at or as close as possible to the battery. Also if you always use red or brown for positive you can't go wrong...in theory at least!

Regards

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 As some of you know I am away at a CM festival and word soon gets around that I am here and peeps come and ask me to have a look at whatever....

This morning I got asked to look at a solar set up that had been installed by a professional..

The first thing I noticed he had put the 1500/3000w PSW inverter on a shelf where it couldn't get any air circulation and I asked if it gave any problems...yep after it had been running for 10 mins it got hot and the fan cut in then the whole thing cut out and the buzzer went of..

Next he had put a fuse inline on the +ive lead from the regulator to the battery using BLACK wire without even putting a red marker on it..

So poor workmanship isn't limited to the unskilled..

My Earth leads or negative leads are Red, Green, Black, White, Yellow, And this is all in the same length of wire,

So if I want to fix any thing, I have to trace the wire back to wherever it came from,

I am slowly converting it to Red is Positive and Black is Negative,

It can be difficult, as the wiring is built in and you cant get at it,

And don't be like a particular "qualified" auto elec that i have worked with and automatically assume that the OEM installed black wire in a harness is negative. Some of the colour codes in modern vehicles is absolutely astounding, with a wide variety of shades and hues being used. It's very hard to tell the difference between some of them too, especially in poor light. Light blues and greens, pale browns, oranges and yellows. Also don't go probing around willy nilly with a test light because replacing a body control module on a modern vehicle can be very expensive if you probe the wrong ones (another "qualified" auto elec did this to the bosses car). Somedays at work can be very entertaining :)

The above seems NO maintenance.. Or wasn't aware how dangerous it was..
Back to connecting 12V at battery.. If EVERYTHING is turned off there should be NO load or or sparks when connecting or more the point no glow on test lamps..

Too right John you don't know that you cant fix it till you try and it doesn't work, give everything a go, that's what Aussies do.

New Zealand, which uses the exact same wiring standards as us, allows DIY wiring without the world coming to an end. The New Zealand government even publishes pamphlets providing help to home owners!
Here is an extract from one such pamphlet:
What are the main electrical repairs you can do yourself at your home?
For a full list of the electrical repairs you can do on your home, please refer to Regulation 64 of the Electricity Safety Regulations 2010.

The work you can do includes:

Replacing switches; socket outlets, lamp holders, ceiling roses, water heater switches, thermostats and elements.
Repairing light fittings.
Moving, repairing or replacing flexible cords that are permanently connected to outlets or ceiling roses.
Disconnecting and reconnecting permanently wired appliances.
Moving switches, sockets and lighting outlets, but only if they are wired with tough plastic-sheathed cables.
Installing, extending, or altering any cables, except the main cables that come from the street to your switchboard.
Fitting plugs, cord extension sockets or appliance connectors to a flexible cord.
Replacing fuse wires and fuse cartridges.

Regards

Maybe that's why our population is larger than NZs 

Ontos45 wrote:

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Mr B2 wrote:

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That dont apply in OZ, 240 volt is by all Qualified licenced Electricians,

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 Are New Zealanders smarter than us Australians?

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 Obviously, that's why more of them come here to live, than us going there. 

Although I have heard that the average IQ of both countries decreases every time a Kiwi moves here. 

TMK the work still gets inspected before livening up ?

I wouldn't be too keen to suggest its better here.. Atleast once a week I would find a revers polarity on a NEW house..

Consumer mains wired the wrong way !!!

-- Edited by Aus-Kiwi on Tuesday 4th of February 2014 10:00:25 PM

He's got it wrong Muldoon [Ex P.M] said way back for every Kiwi going to Aust the IQ goes up in both countries..

Bloody convicts LOL..

oldbobsbus wrote:

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Aus-Kiwi wrote:

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Bloody convicts LOL..

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 We even had our fares paid for us..

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I would be happy to pay for you to go back again.  

Reminds me of the story about the pom who wanted to go back.

The return fare was 200 quid but he found himself 1 quid short.

He approached an Aussie in the street and explained that he was homesick and wanted to go back to mother England but needed a quid for the fare.

The Aussie handed him a twenty and told him to take nineteen of his mates with him.