A typical immersion heater, how it works and how to test it.
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https://www.youtube.com/watch?v=obWkCGFhuus
The plug in 300W dimmer with various different lamps. Plus another dimmer, minimum load requirements and power consumption of various LED lamps.
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https://www.youtube.com/watch?v=qoQ7wpVHr8I
A very poor quality multiway extension socket with flex and illegal plug attached.
This is part 2, in which the unconnected earth wire is investigated, the unfused plug is dismantled and the various claims printed on the product packaging are examined for credibility.
Part 1: http://youtu.be/e0ghsODkqUQ
Part 3: http://youtu.be/KzP6OPK9zSI
Website: http://xo4.uk/?vFR
Some of the many things wrong with this product:
Plug in the style of BS1363, but the dimensions are incorrect.
Plug is unfused.
Earth wire not connected inside the plug
Flex is of very poor quality, inner conductors have inconsistent insulation and are loose in the outer white covering.
Individual wires of the flex contain insufficient metal and have very high resistances.
The 'copper' wires in the flex are actually some other metal with a copper plating (aluminium?)
All internal connections are poorly tacked together with solder.
Socket terminals are very thin, easily bent and not secured at all.
Excess wire left inside the device, not trimmed, high possibility of short circuits.
Wires to the LED indicator not insulated and not secured in any way.
All of the claims on the product packaging about protection, filtering, shutters, fusing and safety are total lies. This product has none of the features listed.
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https://www.youtube.com/watch?v=C1h9LLJJvk0
Protection classes as defined in BS EN 61140, with Class I and Class II (double insulated) being the most common.
Covers all four classes, the protection methods for each one, and considerations when connecting equipment to a fixed wiring installation.
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https://www.youtube.com/watch?v=eWHQRcO071E
A metal 4 way consumer unit, probably from the 1960s, with Lupus Midget circuit breakers. A fairly unusual item even then, as the majority of installations from that era had fuses rather than circuit breakers.
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https://www.youtube.com/watch?v=_3hh6E_eFxg
Replacing the flex and plugs on two table lamps.
The existing flex was single insulated, and the plugs had unsleeved pins.
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https://www.youtube.com/watch?v=qVhV0MXe1gk
Old timer control box from the 1960s, probably for electric heating.
Contains an ORDSAL double pole isolator, two Vennerrette 24 hour timers, two rotary switches by Craig & Derricott, and six ceramic MEM fuses.
Labelled Pentagon Group on the front cover. The Ordsal switch is probably Dorman Smith.
Two output circuits for Bed Rooms and Living Rooms, 20 amp and 15 amp.
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https://www.youtube.com/watch?v=pLdIaPQ2UGk
A plug in timer, designed to control one electrical appliance. One on/off per 24 hours. Probably from the 1960s, complete with original box, instructions, guarantee card and return address label.
This one has BS1363 plug / socket, the instructions indicate a round pin 15A BS546 model was also available.
Internally it contains a motor and a brass gearing arrangement to reduce the rotational speed to 1 rotation per 24 hours.
Website: http://xo4.uk/?as1
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https://www.youtube.com/watch?v=9uefmMVHvpg
A power cord sent in by Scott from Canada. A low cost item made in China, this is very poor quality with numerous problems.
The lead is examined and eventually totally destroyed by overheating.
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https://www.youtube.com/watch?v=Aq8_XYTZbGM