Re: How much current safe for 30m extension?

From: Dimitrios Tzortzakakis (use_at_address.below)
Date: 02/14/05 

Date: Mon, 14 Feb 2005 16:15:27 +0200

cable is not that expensive, it's copper after all.I can see in an invoice
that I paid 28 cents a meter for a 3G1.5 mm^2 A05VV-U cable.A 2.5 mm^2
conductor, single core, which we generally use to connect washing machines,
costs 9 cents a meter .Or 6 mm^2, for ranges, 22 cents a meter.Why don't you
ask an electrician to construct you an extra heavy duty extension cable,
with industrial-grade plugs?I did in college, when doing my Practicum, for a
high-temperature oven, three-phase, 25A, which plug tended to overheat.Cost
was negligent. 

--
Tzortzakakis Dimitri?s
major in electrical engineering, freelance electrician
FH von Iraklion-Kreta, freiberuflicher Elektriker
dimtzort AT otenet DOT gr
? "Peter A Forbes" <diesel@easynet.co.uk> ?????? ??? ??????
news:rpks01dusj3e57g4n976ii30l4ncc1stpj@4ax.com...
> On Sat, 12 Feb 2005 10:51:00 -0800, "Watson A.Name - \"Watt Sun, the Dark
> Remover\"" <NOSPAM@dslextreme.com> wrote:
>
> >
> >"Bob Eager" <rde42@spamcop.net> wrote in message
> >news:176uZD2KcidF-pn2-pgQf8dbMMKeL@rikki.tavi.co.uk...
> >> On Sat, 12 Feb 2005 12:46:19 UTC, Ian Stirling
> ><root@mauve.demon.co.uk>
> >> wrote:
> >>
> >> > Or for 60m, 8.4*10^-1 ohms, or .84 ohms.
> >>
> >> Plus the resistance on the two connections. Not sure whether the earth
> >> fault loop impedance is still OK...
> >
> >Yeah, true.  You 220VAC and 240VAC guys think you got it bad, we have
> >four times as much of a problem here in 120VAC land.  ;-)
> >
> >Those poor souls that put a hundred feet or so of 18GA (about 1mm sq)
> >extension cord on their weed wackers soon find that not only does it run
> >slow, but the motor overheats.  So we have extension cords that are 16
> >or 14 gauge, and can handle the extra current.  But people are too cheap
> >to pay double for the heavy duty extension cord, so they end up eating
> >their money up in burned out motors.
> >
> >And then when they get tired of doing that, they go out and buy a weed
> >wacker with the gas engine.  This is on the end of a long pole, so the
> >engine is right up next to their face, so they go deaf from all the
> >engine noise.  And they put the weed wacker in the garage, where the gas
> >from the tank runs out and catches on fire!
> >
> >
> >> --
> >> Bob Eager
> >>
> >
>
> Why use anything as small as 1mm sq cable???
>
> For 30metres I'd want to see 2.5mm sq at least, if not 4mm sq.
>
> If not for the volt drop or lack of, for the mechanical strength and
resistance
> to damage.
>
> Peter
>
> --
> Peter & Rita Forbes
> Email: diesel@easynet.co.uk
> Web: http://www.oldengine.org/members/diesel

Relevant Pages

  • Re: How much current safe for 30m extension?
    ... ask an electrician to construct you an extra heavy duty extension cable, ... >>extension cord on their weed wackers soon find that not only does it run ... >>wacker with the gas engine. ...
    (sci.electronics.equipment)
  • Re: How much current safe for 30m extension?
    ... extension cord on their weed wackers soon find that not only does it run ... wacker with the gas engine. ...
    (sci.electronics.equipment)
  • Re: How much current safe for 30m extension?
    ... extension cord on their weed wackers soon find that not only does it run ... wacker with the gas engine. ...
    (sci.electronics.components)
  • Re: How much current safe for 30m extension?
    ... >extension cord on their weed wackers soon find that not only does it run ... >wacker with the gas engine. ... If not for the volt drop or lack of, for the mechanical strength and resistance ...
    (sci.electronics.components)
  • Re: How much current safe for 30m extension?
    ... >extension cord on their weed wackers soon find that not only does it run ... >wacker with the gas engine. ... If not for the volt drop or lack of, for the mechanical strength and resistance ...
    (sci.electronics.equipment)
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