Parkville Multi 1 - Electricity. Multi-Cache

This cache has been archived.

Wiser than Owls: All Parkville Caches have now been collected and archived.
Thanks to all the puzzle writers for their efforts, and the committee for their organization.
Lastly to all the finders, we hope you enjoyed the caches on Melbourne's bike trails.
Wiser than Owls.

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Hidden : 12/10/2017
Difficulty:
2.5 out of 5
Terrain:
1.5 out of 5

Size: Size: micro (micro)

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Geocache Description:


We all take electricity for granted, but it does come in quite a few different voltages.

Australia as the UK used to run on 240/450v but in 1983 the powers that be decided to change to 230/400v in an effort to introduce a standard international low-voltage value. The rationale was to assist manufacturers to only have to produce one range of products - a major step forward in improving the overall economics of products. Unfortunately it still has not been 100% successful. This power was delivered by over head power lines which in some cases looked very unsightly. Today all new estates are required to have the electricity underground.

But not only consumers use electricity we also rely on it for our transport via trams and trains.

Trains use Electric power from a generating station is transmitted to grid substations using a three-phase distribution line system.
At the grid substation, a step-down transformer is connected across two of the three phases of the high-voltage supply. The transformer lowers the voltage to 25,000V which is supplied to a railway feeder station located beside the tracks. Trains get their power from the overhead lines and use the tracks as the other connection.

Trams on the other hand use substations receive power at either 6600, 11,000 or 22,000 volts and transform it to 470v AC. Machines called Rectifiers then create Direct Current (600v DC) electricity which is fed to the overhead wires. Trams then pick up electricity to power their motors from the pantographs which connect them with overhead wires.


How electricity Gets to us.

The spinning turbines at the power plants make the electricity, which flows into power lines and to our citys. Electricity moves through the wires very fast. In just one second, electricity can travel around the world seven times. From the power station where the electricity is made the electricity flows to large transmission lines held up by huge towers. The transmission lines carry large amounts of electricity to substations in cities and towns. Distribution lines carry small amounts of electricity from the substations to houses, businesses and schools.


High voltage transmission lines carry the power from the plants to this 50 Hz electrical substation in Melbourne. This is showing three of the five 220,000V/66 kV transformers, each with a capacity of 150 million VA. This substation is constructed using steel lattice structures to support strain bus wires and apparatus.

Now the Cache
At WP1 you will be able to see many lines carrying different voltages, Train,Tram and commercial distribution lines. You will also be in front of a power box with some letters and 3 numbers on it, use these numbers to find the following Coordinates.
Third number plus 3 = A
Third number = B
Third Number plus 1 = C
Second number minus 2 = D
First number minus 1 = E

WP2 can be found at:- S37° 45.ABC E144° 53.CDE (take note of the minutes)

Once at WP2 you will find yourself VERY close to a Hi voltage transmission Line.
Do not climb on any structures near here, it is prohibited!
At WP2 you will be looking for a small plaque with TBM 4 and under that some numbers.
To find GZ you will need to find the second number which will be A
Add the first and the third number to make B

The cache can be found at:-
S37° 45.ABA E144° 53.BAA


We hope you enjoy your visit.

Additional Hints (Decrypt)

Uvqr: Vg ybbxf yvxr n frng

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)


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