#electrical

Описание: As part of your home electrical installation you’ll have a Main Fuse… commonly sat next to your electricity meter. This is the main bit of protection before your Consumer Unit, and it is owned by the DNO (District Network Operator - National Grid) and just like a fuse in your standard UK plug… it is designed to blow under fault conditions and cut the power to your home, and I have been to properties where, thankfully, this has been the sole protector of human life!! In this video you can see what happens when electricity is allowed to flow unchecked… the cooker became faulty and as the homeowner didn’t have an RCD (Residual Current Device) the fault wasn’t detected until it completely failed and blew a hole through her saucepan! The current generated was so great (100A+) that the Main Fuse was blown and so thankfully, the power was cut.

The “Cut Out” is the bit of plastic that surrounds the fuse… it houses the fuse. In a smaller home you can expect to find a 63A fuse, with a medium sized home up to 80A, and then more commonly now, 100A. This means that the “Maximum Demand”, or electricity that your home can produce shouldn’t exceed the size of the fuse within the Cut Out! In large properties and commercial settings we get to the topic of 3-Phase supplies… where there are 3x100A fuses to cope with the extra demand, and now we have solar and EV becoming more common new houses are now being supplied with a 3-Phase power supply, however most houses are currently only Single Phase (i.e. 1 x 100A Fuse).

If you'd like to read more about this you can visit my website and check out my blogs: https://www.spellerssparks.co.uk/blog...

Or, if you'd like to find out a little bit more about your Local Electrician then you can visit my website www.spellerssparks.co.uk or call Rich on 01761 325 007!

00:00 - 02:00 Introduction & information on the cut out and main fuse
02:01 - 02:40 The wiring and how it all works
02:41 - 03:55 Why I don't pull the main fuse
03:56 - 04:50 The tails and how they feed the Consumer Unit and wiring from Isolator Switch
04:51 - 05:12 What happens when the main fuse blows!
05:13 - 07:04 What will happen if you pull the main fuse?
07:05 - 07:26 The end!