Do Me A Favour!

securespark · 4 Mar 2010

Please?

I have left my books on a job. In the good ol' days, Clipped Direct was Ref Method 1. What is it referred to now?

I'm racking my brain cell...

Cheers

Monkeh · 4 Mar 2010

ppuch1 · 5 Mar 2010

Ref "C" on tray/wood/masonary or "100" "101" if Thermal Ins

securespark · 5 Mar 2010

Thanks.

I'm also checking off my end-to-end resistances. On 2,5/1,5 cable, what is the relationship between the conductor resistances?

1john · 5 Mar 2010

0.66666666666666666

GaryMo · 5 Mar 2010

1john said:
0.66666666666666666

It's 1.666, or thereabouts.

At 20°C, a 1.5mm² copper conductor has a resistance of 7.41 mΩ/m whereas a 2.5mm² copper conductor is 12.10 mΩ/m.

12.10/7.41 = 1.633

ban-all-sheds · 5 Mar 2010

Or even more straightforwardly, 2.5 ÷ 1.5 = .....

1john · 5 Mar 2010

GaryMo said:
1john said:

0.66666666666666666

Click to expand...

It's 1.666, or thereabouts.

At 20°C, a 1.5mm² copper conductor has a resistance of 7.41 mΩ/m whereas a 2.5mm² copper conductor is 12.10 mΩ/m.

12.10/7.41 = 1.633

oops, slip of the finger on the numerical pad at way past my bedroom, yes it should be 1.666

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Do Me A Favour!

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