Difference between revisions of "Talk:Cables"
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That table you pulled you cut'n'pasted, I had not finished writing it yet! ;-) | That table you pulled you cut'n'pasted, I had not finished writing it yet! ;-) | ||
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| + | ==Puzzled== | ||
| + | I'm puzzled by the reason for removal of: | ||
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| + | "Any design must ensure the maximum voltage drop allowed between source and point of use is not exceeded when at full load. This is usually defined as 4% of the nominal supply voltage (about 9.2V at 230V AC)" | ||
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| + | Surely this is key info for v drop calcs? | ||
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| + | I'm also puzzled why the voltage drop table has been renamed 'swa,' and why it is now a subsection of 'imperial t&e' | ||
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| + | I'm also wondering why the addition of the sentence saying the Vdrop table applies to swa. AFAIK copper is used in all other types of mains cables that any diyer will ever work with, and has been for over 20 years. And afaik the max temps of swa & t&e are the same, so changing resistivity with temperature wont make any difference either. Thus the Vdrop table will apply to all 70C rated pvc insulated cables | ||
| + | [[User:NT|NT]] 22:48, 5 June 2007 (BST) | ||
Revision as of 21:48, 5 June 2007
If someone can remember the date that flex colours changed to their current form, there is a <date> place holder waiting to be filled in.
--John Rumm 01:17, 23 May 2007 (BST)
Google got me nowhere. I thought it was 70 or maybe 71.
NT 23:31, 23 May 2007 (BST)
Woa there! NT
That table you pulled you cut'n'pasted, I had not finished writing it yet! ;-)
Puzzled
I'm puzzled by the reason for removal of:
"Any design must ensure the maximum voltage drop allowed between source and point of use is not exceeded when at full load. This is usually defined as 4% of the nominal supply voltage (about 9.2V at 230V AC)"
Surely this is key info for v drop calcs?
I'm also puzzled why the voltage drop table has been renamed 'swa,' and why it is now a subsection of 'imperial t&e'
I'm also wondering why the addition of the sentence saying the Vdrop table applies to swa. AFAIK copper is used in all other types of mains cables that any diyer will ever work with, and has been for over 20 years. And afaik the max temps of swa & t&e are the same, so changing resistivity with temperature wont make any difference either. Thus the Vdrop table will apply to all 70C rated pvc insulated cables
NT 22:48, 5 June 2007 (BST)