A low cost mains powered LED nightlight is tested to see how much power is used when on or off, and the temperature of the resistors inside is measured.
Comparing two 25mm² meter tails, one with 7 copper strands and another with 19 strands.
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https://www.youtube.com/watch?v=0aoNB6av4x0
Three Venner timeswitches from the 1960s, one with automatic adjustment for switching lighting on at sunset.
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https://www.youtube.com/watch?v=1q15QFMi6dY
An old Tauco / Delta DP220 bench drill is examined and then taken apart.
Other episodes:
Part 2: https://youtu.be/unNx8gGoWro
Part 3: https://youtu.be/5iwGzXCwC1s
Part 4: https://youtu.be/1iQz_MpWHM4
Part 5: https://youtu.be/vpP8pMnuBAk
Playlist of all parts: https://www.youtube.com/playlist?list=PLVsHvs2Suqmq3nYf50HvBUrJF1Hp9WSrO
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https://www.youtube.com/watch?v=aM1ojGj6pGc
Loop impedance, why it matters and typical values expected for smaller installations (100A or less).
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https://www.youtube.com/watch?v=HsWWKzjVUxE
Old two circuit fusebox. Wooden case with a glass lid.
This contains four ceramic fuses but only two circuits - each circuit has a fuse for both line and neutral. This was common at the time, but is no longer accepted, double pole fusing has not been permitted in the UK since 1955.
All of the fuses contain what looks like 5 amp fuse wire, and would most likely have been used for lighting circuits.
Part 2 after cleaning: http://youtu.be/k8rRzZW5D-w
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https://www.youtube.com/watch?v=lPtvqWOMBz4
The 10 amp Sonoff switch is connected to a 2.8kW kettle.
TM-902C Temperature Meter: http://amzn.to/2r7ofmR
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Flameport Enterprises Ltd is a participant in the Amazon EU Associates Programme, an affiliate advertising programme designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.co.uk
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https://www.youtube.com/watch?v=wHjlYswMUts
Demonstration of testing an RCD, different test settings, expected results and alternate test method for situations which have two or more RCDs on the same circuit.
Tester used is a Fluke 1653. Other test equipment may have different ways to select the various test options, but the actual tests will be the same.
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https://www.youtube.com/watch?v=ZaAUg75BR5Y
A power meter for lamps and other electrical appliances.
0-2500 watts, 85-265 volts AC, 0-10 amps.
Also displays power factor and calculates annual energy consumption based on a certain number of hours per day usage, energy cost and total energy used.
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https://www.youtube.com/watch?v=2DQ9Jzulo4I