An older example of a shaver socket outlet as used in UK bathrooms. Normal socket outlets are only permitted where they are at least 3 metres from the edge of the bath, so in reality they are never installed.
These shaver sockets contain an isolating transformer and are limited to 20VA, so are only of use for very low power items like shavers and toothbrushes.
Modern examples are very similar, although usually riveted together so more difficult to take apart for demonstrations like this.
The black 2 pin plug in the video is a Europlug, the UK shaver plug is similar but has slightly shorter parallel pins.
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https://www.youtube.com/watch?v=hyaaPt6UuEU
Inside a typical immersion heater thermostat with safety cutout.
This one has failed, resulting in the contacts being permanently closed and the overheat cutout device operating to prevent the water boiling.
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https://www.youtube.com/watch?v=QIGyNdi03hI
Two older lifts / elevators in the Bournemouth area.
The first has no door on the car, only doors from the lift shaft to the landings. Careless people could therefore find their clothing or fingers caught between the lift car and the shaft wall/doors. Appears to be all original with very basic controls - probably from the 1960s. It is due to be replaced soon.
The building it is in has 6 levels (ground and 5 floors above) but this lift only goes to the 4th floor - the space on the top floor where the lift should be is a cupboard with the motor in it.
The second is a similar age but has been partially modernised with a new control panel. The car, motor and everything else are original. It is very slow.
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https://www.youtube.com/watch?v=I7MsW-mVWdQ
Overview of emergency light fittings and using a key operated switch to disconnect power for test purposes.
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https://www.youtube.com/watch?v=z8IYMsEcrRI
A look at a typical RCBO and how it is connected in a consumer unit.
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https://www.youtube.com/watch?v=4pzFqj9-9Ic
Multicoloured LEDs with integral WS2811 control chips, prewired into sets of 50.
In this episode, the LEDs are fixed into black plastic panels to create several illuminated name signs. (Part 1: http://youtu.be/XEy_IMT2WoU)
Panels are 3mm black foamex (foamed PVC sign board).
Paper templates created in CorelDraw.
LEDs: http://www.aliexpress.com/item/100x-WS2811-5V-12mm-LED-Module-Black-Green-White-Crystal-RGB-Wire-50-pixels-string-Christmas/32216500548.html
Controller: http://www.aliexpress.com/item/Free-Shipping-1x-24-Key-IR-Remote-Controller-WS2811-WS2812B-200-Change-Max-1000-Pixel-LED/1547147534.html
Power supply: http://cpc.farnell.com/ideal-power/25hk-ab-050a400-d5-1/psu-desktop-5v-4a-3-pin-iec/dp/PW03335
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https://www.youtube.com/watch?v=-1JvQra3vsU
Overview of the equipment used to apply up to 30 amps to various electrical leads, plugs and sockets.
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https://www.youtube.com/watch?v=V75YZnIhJHc
Travel adaptor so that plugs from elsewhere can be used in the UK.
It's all bad - no fuse, pins too close to the edge, earth pin is sleeved, pins are too small, pins are plated metal (aluminium?), no shutters on socket holes.
Internally, the contacts are made from pressed steel, and the only connection between the contacts and the plug pins relies on the back of a screw head pressing onto a small tab of metal.
The pin screws are also steel - a metal which has far worse conductivity than copper or brass.
Previous adaptor: http://youtu.be/jUu8a6MP0iI - this is similar but had bare pins and could not be opened without destruction.
Part 2: http://youtu.be/eJjmw4k4Org
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https://www.youtube.com/watch?v=VcNwb0X9Nic
Overview of the three types of electrical certificates and completing the Minor Works certificate.
Certificate pads to purchase: http://amzn.to/2Dbg3r9
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https://www.youtube.com/watch?v=rYtaZRcCjl8