MCB types
- Thread starter andy
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or if you meant between different brands, not much. They are all built to the same electrical specification. But physically they are sometimes a bit different, so they may only fit in a CU from the same manufacturer.
Also, there is an older type sequence type 1,2,3,etc. Similar idea to range type b,c,d, but slightly different current bands.
A MCB has two different mechanisms inside it which cause it to trip. One is thermal, a big current causes it to heat and the switch pops open. This allows a bit of delay if it is slightly overloaded before it opens. The other is electromagnetic, which is the mechanism which causes it to trip very fast if there is a big overload, like a short circuit.
Type B are normal in houses, except that typeB 6A lighting can cause problems.
Also, there is an older type sequence type 1,2,3,etc. Similar idea to range type b,c,d, but slightly different current bands.
A MCB has two different mechanisms inside it which cause it to trip. One is thermal, a big current causes it to heat and the switch pops open. This allows a bit of delay if it is slightly overloaded before it opens. The other is electromagnetic, which is the mechanism which causes it to trip very fast if there is a big overload, like a short circuit.
Type B are normal in houses, except that typeB 6A lighting can cause problems.
Don't plug the opposition! The answer's here in our own back yard:fubar said:
//www.diynot.com/forums/viewtopic.php?p=71190#71190
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It's OK until the day CPW arrives, then whoever is deemed to be responsible will be staked out on a peak in the Massif Central one humid August evening with the blunt end of a lightning rod shoved up his a***.fubar said:ban-all-sheds said:
Sorry, missed that one in the rulesIs it okay to do it in the other direction, or is that frowned upon too?
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Michael
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