Discuss lighting circuits- Type B or Type C MCB in the UK Electrical Forum area at ElectriciansForums.net
I've always used Type B but come across a few installs where type c have been used. This is even with LED lighting. Just wondered if it was common practice years ago and some ppl are just stuck in their ways.
I've always used Type B but come across a few installs where type c have been used. This is even with LED lighting. Just wondered if it was common practice years ago and some ppl are just stuck in their ways.
The issue with inductive loads is not so much the individual fitting and its inrush (excluding the very large wattage ones).. its the accumulative inrush so say you had 400w metal hallides you may be limited to maybe 2 or 3 for 6amp mcb because you have multiple spikes all together for the mcb to cope with, leds can be the same if you have to many switching on together. Going to a C or D type is a possible solution to resolve tripping issues but to be honest if a C or D is in then it should only be there by design and not because the circuit wasn't designed correctly (Zs allowances in mind if uprating to a C or D)
or, perish the thought, the installing spark had used all his stock of type B the day before and only had type C s on the van.
Thanks for the reply Darkwood my query is if you have a 6 Amp MCB that may trip because of in rush current why wouldn't you uprate the MCB to a 10 Amp, obviously permitting cable sizing etc.
This is a new install with max 18 LED 600 x 600 luminaries on a circuit. (9 luminaires in each room)
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