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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Permissible continuous current for wires with copper conductors with rubber insulation in metal protective sheaths and cables with copper conductors with rubber insulation in lead, PVC, nayrite or rubber sheath, armored and not armored. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Electrician's Handbook

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Permissible continuous current for wires with copper conductors with rubber insulation in metal protective sheaths and cables with copper conductors with rubber insulation in lead, PVC, nayrite or rubber sheath, armored and not armored:

Conductor cross-section, mm Current*, A, for wires and cables
single-core two-core three-core
when laying
in the air in the air in the earth in the air in the earth
1,5 23 19 33 19 27
2,5 30 27 44 25 38
4 41 38 55 35 49
6 50 50 70 42 60
10 80 70 105 55 90
16 100 90 135 75 115
25 140 115 175 95 150
35 170 140 210 120 180
50 215 175 265 145 225
70 270 215 320 180 275
95 325 260 385 220 330
120 385 300 445 260 385
150 440 350 505 305 435
185 510 405 570 350 500
240 605 - - - -

* Currents refer to wires and cables with and without neutral core.

Publication: electro.narod.ru

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paper transistor 27.09.2008

Portuguese scientists have made a paper-based transistor instead of silicon.

Typically, microcircuits are deposited on silicon. This is bad, because silicon is, firstly, hard, secondly, non-degradable, and thirdly, its production is rather dirty. It would be nice to make microcircuits on something else, just as incapable of conducting electric current, but less harmful to the environment.

Scientists from the Center for Materials Research at the New University of Lisbon, led by Professor Elvira Fortunato, decided to make a field-effect transistor on paper. And they succeeded in this: they applied oxide field effect transistors to both sides of an ordinary paper sheet. Thus, Portuguese scientists forced paper to perform two functions at once - a substrate for a microcircuit and an insulator.

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