Nikola Tesla invented the AC generator.
The first power station was the Edison Electric Light Station, built
in London, which started operation in January 1882
On the 10th December, 1895, electricity was officially switched on for
Launceston. The Council constructed a turbine-driven power station at
Duck Reach and it is understood that Launceston had the distinction of
being the first City south of the Equator to be lit by electricity, generated
by water power.
The original two pin electrical plug and socket were invented by Harvey
Hubbell and patented in 1904
As of 2000, the mains supply voltage specified in AS 60038 is a Sinusoidal
wave 230 Volt RMS with a tolerance of +10% -6% and a frequency of 50 hertz
The current required to kill a human depends on the individual’s
body resistance, the resistance in the circuit, the voltage applied and
where the shock occurs, it is usually accepted to be between a few milliamps
to about 50 mA
Normal RCD’s trip at 30mA usually under 40 milliseconds (the standard
requires device to trip under 300 milliseconds).
The time for one complete alternating current cycle is 20 milliseconds.
Did know new equipment does not need
testing ? but can be fitted with a "new to service tag"
Extract from the AS3760 standard....
1.2.1 New equipment
In Australia, when the equipment is new, the supplier is deemed responsible
for its initial electrical safety. New equipment need not be tested but
shall be examined for obvious damage. Where deemed compliant the owner
or responsible person shall ensure it is tagged in accordance with 184.108.40.206.
NOTE – This clause is drawn to the attention of owners of computer
and office equipment, who may arrange for the tagging action to be undertaken
by their in-house competent person.
220.127.116.11 (c) In Australia, equipment that is new and entering into service
for the first time but not tested and tagged shall have a tag applied
that includes the following information:
(i) Wording, “new to service”
(ii) Date of entry to service
(iii) Date when next test is due
(iv) Statement, “This appliance has not been tested in accordance
with AS/NZS 3760”.
Does your Tester and Tagger cut the
plugs off devices that fail? They are not supposed to, this is what the
2.4 ACTION RESULTING FROM INSPECTION AND TESTING
2.4.1 Non-compliant equipment
Where in-service inspection or testing identifies equipment which fails
to comply with the criteria given in this Standard, the equipment shall
be appropriately labelled to indicate that the equipment requires remedial
action and warn against further use. Such equipment shall be withdrawn
from service. The choice of remedial action, disposal or other corrective
action shall be determined by the owner or the person responsible for
the safety of the site where the equipment is used.
Call Test Tag n Repair Now on 0418 518