The difference between switching AC and DC. With DC, the arc formed as the switch contacts open is far more difficult to extinguish, and can cause significant damage.
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 ... https://www.youtube.com/watch?v=mQpzwR7wLeo
Cheap plastic Fresnel lenses and what they can be used for.
These can be obtained from ebay and similar places and are found by searching for 'fresnel card'.
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https://www.youtube.com/watch?v=FdINpAlUcsM
Total dismantling and teardown of a Burgess BBS-20 MkII Bandsaw.
Probably from the late 1970s / early 1980s.
Reassembly video: https://youtu.be/Z2Mk5-nyHa8
Blade installation and cutting: https://youtu.be/a38IS_8Cir0
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https://www.youtube.com/watch?v=a38IS_8Cir0
Replacing fusewire in a Wylex fusebox with rewireable BS3036 fuses.
This type of fusebox was common in the UK, and there are plenty still in use.
This probably does not apply in other countries.
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https://www.youtube.com/watch?v=7yywsC8dTp8
A light switch where the contacts have welded together, probably caused by incorrect wiring.
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https://www.youtube.com/watch?v=F0XqMZFZG90
Different types of circuit breaker, tripping current and considerations when using them.
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Books featured in this video:
Small on site guide: https://amzn.to/2Je3CxY
Large BS7671: https://amzn.to/2Jf8umv
Circuit Breakers - How they work, what's inside: https://youtu.be/u6I7dKDk7hE
Inside a Wylex / Stotz MCB: https://youtu.be/EUcaOKNc_Hc
Inside a Crabtree C50 - different internal mechanism: https://youtu.be/MhUaf0gsyDw
Several other circuit breaker videos: https://www.youtube.com/playlist?list=PLVsHvs2Suqmpz6EgtWQsoWuxg_U57sCsB
ABB document on different types of circuit breaker: http://xo4.uk/x/abb_MCB_types.pdf
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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=niZ01Dr_8CE
What happens to power factor when phase cut dimmers are used, and a demonstration of using a variable transformer to dim incandescent and LED lamps.
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https://www.youtube.com/watch?v=HDz4d1QdXBI
What's inside some 222 series Wago connectors and some identical looking other types.
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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=hGuK9ZajhN0
Capacitors for electric motors, how to identify and two ways to test them.
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https://www.youtube.com/watch?v=slyHyxpnUYA
The useless shaver adaptor is destroyed, as is the plug which was removed from the toothbrush charger, and the Export Only adaptor is subjected to some chemical adjustments.
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https://www.youtube.com/watch?v=yCBwXxJV_aU