Always a good idea.
- Thread starter Mikey D
- Start date
Always a good idea.
barracuda816
Member
- Messages
- 613
- Location
- Bavaria, Germany
you could still spur off the ring main just use an FCU. I would say if your 110v transformer is triping a 32a MCB it needs looking at.
brightspark
Member
- Messages
- 41,255
- Location
- yarm stockton on tees
the inrush current on a 110 transformer is very high and is a regular occurrence switching them on and off
I see it all the time with builders plugging in to punters houses
Kayos
Gone......
- Messages
- 9,422
- Location
- Yorkshire
the inrush current on a 110 transformer is very high and is a regular occurrence switching them on and off
My big 110 transformer ended up with a 16a plug and only being used on an old genny as it tripped every rcd every time it was plugged into a 13a socket
Then batteries improved so I scrapped it and bought mostly 18v tools
brightspark
Member
- Messages
- 41,255
- Location
- yarm stockton on tees
do u mean mcb . rcd is earth leakage
henry Kadzielski
Member
- Messages
- 1,226
- Location
- Australia Wollongong
Good morning gents.
There is also 'D' curve breakers!
There is also 'D' curve breakers!
WorkshopChris
Member
- Messages
- 5,049
- Location
- South East Essex
Its highly unusual to use a type D in a domestic situation due to the disconnection times and earthing requirements.Good morning gents.
There is also 'D' curve breakers!
A 32A D will pass over 600a briefly and will should hold for 320A for as long as 5 seconds. Not something you want passing down a length of 2.5mm t&e in a home workshop.
henry Kadzielski
Member
- Messages
- 1,226
- Location
- Australia Wollongong
Good morning workshopchris.
It wasn't meant as a recommendation just as a retorical option!
It wasn't meant as a recommendation just as a retorical option!
WorkshopChris
Member
- Messages
- 5,049
- Location
- South East Essex
No problem it wasn't meant as negative comment.Good morning workshopchris.
It wasn't meant as a recommendation just as a retorical option!
You see so many posts on internet forums suggest a type C or occasionally a D as a quick fix.(just change your mcb to a type C/D).
But there is a lot more to it sometimes as just a breaker change.
One day when i get some time i might try and set up some real world test to compare breaker tripping times.
In one workshop i have a few 16amp sockets on type C10 that will run welders fine that will not run B16 orB20. But all the cable runs are in 4mm singles.
brightspark
Member
- Messages
- 41,255
- Location
- yarm stockton on tees
normspanners
Member
- Messages
- 8,853
In my workshop at the metal yard we had a massive 110 transformer that used to blow 32A C on switch on, I went to 64a and still tripped it!, it ran the radials to all the 110v sockets in the workshop it was about 600 mm square cant remember the actual rating of it but had several 64a sockets on it some 32 and loads of 16's, sometimes took 4-5 trips to get it to work. we used to leave it on 24/7 but at B/H week ends would shut it off etc.
the way I cured it was to put a 500W halogen in series with it with a separate momentary switch and a shorting contactor on another momentary switch so hold the first switch, and the bulb glowed as it loaded the coil, then hit the self latching contactor and it would work on its 32a breaker !
the way I cured it was to put a 500W halogen in series with it with a separate momentary switch and a shorting contactor on another momentary switch so hold the first switch, and the bulb glowed as it loaded the coil, then hit the self latching contactor and it would work on its 32a breaker !
