Search results for query: the fuse is to protect the cable

Hi Everyone, Note: I live in a part of the UK where there is no Part P. We have a room that has electric heating (almost) installed. We have 2 X 1000W electric heaters. A single 1.5mm T&E cable is being run from the CU to the first heater fused switch (fused to 5A). Then, another 1.5mm...

Fuses etc. are for protecting the cable. What will they do in Boschland and the surrounding countries where such things (13A fuses) are not used? If the appliance requires internal overload protection the manufacturer will have fitted it.

Fuses and MCBs protect cables - not CUs. RCDs protect people.

In the 20th century probably no fuse, but the CU will have a MCB, probably 6 amp. The cable will be protected by that.

Firstly there is nothing wrong with using a bigger cable, it is not always convenient. In this case it seems that 6mmsq will be the most reasonable. The protecting fuse/MCB is before the cable, nearer to the fuse box. If the fuse in the box is not more than 20A you can use 2.5mmsq cable...

thanks but where or what reg states this ..surlely the ring main fuse is to protect the cable and if in 2.5 then the cable is protected.

1) all cable has to be protected by a protective device ie fuse or MCB. if you are referring RCD protection, special method of installation and materials allow RCD protection to be avoided but I advise you install an RCD. 2) Do you mean a fused connection unit rather than a socket? The...

but not identical. When you say the external fuse is to protect only the cable and the internal fuse is to protect the equipment ask yourself one question. How far does the "external" cable extend into the equipment before reaching the internal fuse that is protecting the equipment. Does it...

And the cable protected by the DNO fuse is..... ?

I want to replace a badly degraded 4 wire electric cable. The cable has blue, black, brown, and earth wires. Outer jacket is white. The conductor is stranded steel. The diameter of the individual wires with jacket is similar to those found in a 13A flex. The mains supply to the appliance is...

I was looking under my floorboards and noticed a junction box which is on a radial circuit. In the junction box is a 2.5 cable and then a 6mm running to the socket, the 2.5mm cable is about 5 meters and the 6mm about the same.Is there a problem in having two different size cables on the one...

I’ve seen on a few occasions that lighting circuits are fed off a fused spur running off the RFC as opposed to the lighting have a dedicated circuit with a protection device at the consumer unit. It’s also been mentioned for shed lighting in here - I think I recall from previous posts. Q. If...

Got a friend asking me if he can put power to his shed ... the run from the shed to the nearest ring main socket is around 20m. I know Section 7.2.2 of the OSG says 'as a rule of thumb for rings, unfused spur lengths should not exceed 1/8 the cable length from the spur to the furthest point of...

Might have to argue a bit with you on that one spark ( :wink: ). The DNO's LV cables in the path are usually of larger CSA than the spur off to the property. The fuse at the s/s protects the larger cable, but the fuse in the property protects the cable from the joint in the ground (overload only...

The fuse is to protect the cable. Cable so small that it needs a 3a fuse is not allowed. As is often the case the manual is not really correct.

I’m about to change my electric oven. My old oven was just plugged in with a 13a plug into a dedicated 32a supply. The instructions for the new oven according to Curry’s (I haven’t got it yet) say it should be hardwired to a 13a fused spur. My question is can I put a plug on the cable and use...

Hi, I have a non-fused spur providing to the one single power socket in my garage. Guess it is a spur as there is only a single cable. I would like additional sockets in the garage to power a washer, tumble-dryer, freezer and occasional use of power tools. Only item that is constantly being used...

Was talking fault current i.e. from page 7. When the BS951 clamp bites into the cable and it goes bang the upstream protective device is the one doing the protection :wink:

Well, as I'm sure you would agree, it's perfectly legitimate to have fuses ("etc.") protecting appliances (there are millions out there doing just that) but "we know what you meant to say" ( :) ), namely that the fuses which are there to protect cables should not also be expected to...