4E4B relates to 90 degree operating temp. At 70 degrees (4D4B) it's 4.4mv/A/m, but even that works out at about 6.89V drop.
Maybe the calculator has found a figure for 60 degrees?
Kind Regards, John.
Requirements to power a shed
- Thread starter quattroman
- Start date
Maybe the calculator has found a figure for 60 degrees?
Kind Regards, John.
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Your right 60 degrees gives 6.26
http://www.tlc-direct.co.uk/Technic...230&length=60&submit=Calculate+Min+Cable+Size
http://www.tlc-direct.co.uk/Technic...230&length=60&submit=Calculate+Min+Cable+Size
Why use 3 core?
P
Paul_C
I'm quite surprised that as yet there have been no dire warnings about "exporting the earth" if the house installation is TN-C-S.
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Alarm
Why not?
I would use 2 core. Earth at house end and TT at remote
Why?
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Alarm
Using that graph non-linear.
What do you need the third core for?
That would make some sense, although only if the calculator were being given information about installation method - otherwise I can't see how it could estimate operating temperature.
Kind Regards, John.
Maybe there's a field with a drop-down list to select installation method, next to the field with the drop-down list to select cable type.
A
Alarm
Maybe there's a field with a drop-down list to select installation method, next to the field with the drop-down list to select cable type.
You know you could be right
Hi again.
I see someone has given you a load estimate of 6000watts.
The rest of them are just contradicting each other.
The premise may be that after you sell the place the next guy will plug a washing machine and drier down in your shed.
The load is determined by the breaker on the supply. If you limit it to a 10amp 30ma Rcbo You are controling it to a designated 1500w sub circuit. for a specific use.
Have a look on e bay you might find a roll of cable at a knock down price.
If you put a 32amp breaker on, as a radial circuit, you will end up with big cable sizes, to combat voltage drop.
Ask them to quote the IEE reg that supports their theory. That should keep them quiet.
Mike.
I see someone has given you a load estimate of 6000watts.
The rest of them are just contradicting each other.
The premise may be that after you sell the place the next guy will plug a washing machine and drier down in your shed.
The load is determined by the breaker on the supply. If you limit it to a 10amp 30ma Rcbo You are controling it to a designated 1500w sub circuit. for a specific use.
Have a look on e bay you might find a roll of cable at a knock down price.
If you put a 32amp breaker on, as a radial circuit, you will end up with big cable sizes, to combat voltage drop.
Ask them to quote the IEE reg that supports their theory. That should keep them quiet.
Mike.
P
Paul_C
Since when does 10A x 240V = 1500 watts? (Ignoring less than unity power factor issues.)
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