Double trouble

[shocked]

Hi All
This just a quick one Why do we not have double pole MCB's ? would it not make testing easier ? maybe this has come up before and i missed it .
Thanks
John

 

[malcolmsanford]

There are many applications within the industry that require double pole disconnection.

The most common would be within a TT system, I was trained in a time where the RCDs were not as prevalent as now and in a TT system because of the normally EFLI it was desirable for safety to disconnect both LIVES as often a N-E fault in a TT system would not be picked up.

There are several other applications such as explosive environments where I would use double pole PDs as well

 

[spark 68]

Hi All
This just a quick one Why do we not have double pole MCB's ?
Thanks
John

Because the Frenchies use them, :devil2:

 

[SPARTYKUS]

My dads got a french motor home with a Fusebox in full of double pole MCBs. Muller I think (not yoghurt based)

 

[shocked]

So why do we not use them in a domestic situation ?

 

[GLENNSPARK]

Because the Frenchies use them, :devil2:

yeah...well if french cars are anything to go by...lol..

 

[ipf]

Available space? cost? necessity? requirement? ? ? ? ? ?