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sythai

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I'm after a crabtree starbreaker D6 MCB.... any ideas please ? Tried a few wholesalers that I use with no joy

Cheers Sy

Not sure whats going on with the title of my post - "Dont you just love RCDs!!" (was a previous posts title) Should read "Crabtree Starbreaker MCB"
 
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Thanks Mogga no joy there just B or C... starting to have my doubts wether they actually made a 'D' Type ?
 
I'm after a crabtree starbreaker D6 MCB.... any ideas please ? Tried a few wholesalers that I use with no joy

Cheers Sy

Not sure whats going on with the title of my post - "Dont you just love RCDs!!" (was a previous posts title) Should read "Crabtree Starbreaker MCB"

Crabtree don't do a Type D MCB for their domestic Starbreaker or Loadstar boards. Only Types B and C available.
 
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Crabtree don't do a Type D MCB for their domestic Starbreaker or Loadstar boards. Only Types B and C available.

Yeah Just seen that on there website, great...... right plan B

This is going to work out to be an expensive light fitting for my customer.

Basically he's brought some fancy fitting with a transformer in it, which keeps tripping the MCB - he's read the fitting instructions further and it states requires a type 'D' mcb. Thats a new one for me.

So now looks like I'm going to have to split tails a separate mini cu just to do re-do the lights on a 'D' :dizzy2:

But haven't seen many 'D' types for domestic CU's ???

Any thoughts ?
 
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just out of interest as well......whats the length of run from the origin of supply to the last point on this circuit?....

Ummm off the top of head... guess-timate would be 30-50 meters (large 5 bed house / down stairs lighting circuit)

Whys that then, what you thinking ?
 
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max. Zs on a type D is about 1.5 ohms.. iv'e got a couple of starbreakers, think thy're type B though. why do you want a type D for lighting?
 
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Glenn,
Why would he have to watch his Zs ?, surely this circuit would still have to have 30mA RCD protection if he is making changes to the OCPD ?

BTW Iam aware of the lower Zs required for D type MCB's.

Just asking
 
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Glenn,
Why would he have to watch his Zs ?, surely this circuit would still have to have 30mA RCD protection if he is making changes to the OCPD ?

BTW Iam aware of the lower Zs required for D type MCB's.

Just asking
well do you think it prudent to rely on an RCD alone?....like a TT system?.....thats whats being advocated here.....
 
well do you think it prudent to rely on an RCD alone?....like a TT system?.....thats whats being advocated here.....

Not at all,

he is going to be no where near the much criticised magic 200 ohm (1667 ohm) number though is he ?
 
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the thing here as well is short circuit...

A 6A B type or D type is still 6A regardless, only the max Zs has changed for the disconnection time, if it complied for a B-type before then it still complies now in this respect (Short circuit).

if his Zs is say 2 ohms (for instance) then his 30mA RCD will mitigate this, not rely soley on RCD protection.
 
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