Why does my lightbulb keep blowing the fuse?
The reason for a blowing lamp tripping an MCB is that the lamp element gets thinner during its life to the point where it breaks at the thinnest point, this point will melt just before failure. The resistance of the overheating element will momentarily be very low and a current surge is caused, this is picked up by MCB’s but generally not fuses.
What should I do if my fuse blows again?
If the fuse is fine after reconnecting the main power, plug in a couple of electrical appliances or turn on some lights in the electrical zone controlled by the new fuse. If the fuse blows again, there may be a problem with a particular appliance or you may be overloading the fuse with too many electrical demands.
Why does my tungsten light bulb keep blowing?
That way any faults can be identified as can any poorly functioning accessories. You can find one local to you here. 99% of the time tungsten fillamented bulbs have their own fuses built into the stem. these nearly always blow as the lamp fails, usually saving the main fuse. The reason stated, although possible, is not common.
How much power does it take to blow a fuse?
A taillight bulb typically draws less than an amp. If you have four taillight bulbs, that’d be under 4 amps. A typical circuit will have a 10–20 amp fuse. Which means that 3–15 times more power than normal would have to be drawn to blow the fuse, which is unlikely unless there is a short.
The reason for a blowing lamp tripping an MCB is that the lamp element gets thinner during its life to the point where it breaks at the thinnest point, this point will melt just before failure. The resistance of the overheating element will momentarily be very low and a current surge is caused, this is picked up by MCB’s but generally not fuses.
That way any faults can be identified as can any poorly functioning accessories. You can find one local to you here. 99% of the time tungsten fillamented bulbs have their own fuses built into the stem. these nearly always blow as the lamp fails, usually saving the main fuse. The reason stated, although possible, is not common.
Why does my light bulb blow and Trip my MCB?
When a bulb blows, 99% of the time the fuse for the lighting circuit will blow or trip also. This makes the problem seem rather bigger than it actually is. The reason for a blowing lamp tripping an MCB is that the lamp element gets thinner during its life to the point where it breaks at the thinnest point, this point will melt just before failure.
How can you tell when a fuse has been blown?
You might be wondering, then, how to tell if a fuse is blown–an actual fuse, that is. You will see that the fuse has melted, and there might be charring on the panel. A true fuse typically consists of a piece of metal, most commonly an encased wire, that actually melts when overheated. This is what stops the fault (aka “short” or “power surge” ).