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Thread: Running out of cable...
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02-04-2007, 09:24 PM #1
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Running out of cable...
...or just being mean.
You install a rooftop package in the centre of a 10x10m roof. The power comes from a panel on the ground level at one of the corners.
What is the minimum length of cable needed?
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02-04-2007, 09:31 PM #2
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Re: Running out of cable...
12.5m plus a bit to join into the unit itself.
Edit, sorry mis-read the dimensions, as you do
Last edited by Brian_UK; 02-04-2007 at 09:49 PM.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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02-04-2007, 09:45 PM #3
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Re: Running out of cable...
Hi, nh3simman
7,5m+a bit to join (say 8m), but that is not correct connection at all
, but for sure very practical 
Best regards, Josip
Last edited by Josip; 03-04-2007 at 12:17 AM. Reason: insert picture
It's impossible to make anything foolproof because fools are so ingenious...
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Please, don't teach me how to be stupid....
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02-04-2007, 10:22 PM #4
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Re: Running out of cable...
Get a 100m drum, its bound to come in useful. LOLJon
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02-04-2007, 11:42 PM #5
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Re: Running out of cable...
LOL... good one.
Originally Posted by monkey spanners
My answer is 9.57m. (plus a bit to join)
Chillin
IF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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02-04-2007, 11:58 PM #6
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Re: Running out of cable...
I agree its about 8, but i like right angles so prob wouldnt go diagonal to the corner of the roof and down!personally id say 13 for a neat install!
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03-04-2007, 04:14 AM #7
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Re: Running out of cable...
Ignoring the fiddly bits at the ends, the type of cable and best practice.
The answer must be between
1. A straight line joining the two points, 7.5m
(yes Jossip, you can't go through the roof or the wall)
and
2. Centre to top corner + top corner to bottom corner, 9.57m
Last edited by nh3simman; 03-04-2007 at 04:35 AM. Reason: add hint
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03-04-2007, 07:50 PM #8
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Re: Running out of cable...
So that means I am correct again....lol
Chillin
IF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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03-04-2007, 11:21 PM #9
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Re: Running out of cable...
Hi, nh3simman
Originally Posted by nh3simman
Ignoring the fiddly bits at the ends, the type of cable and best practice.
The answer must be between
1. A straight line joining the two points, 7.5m
(yes Jossip, you can't go through the roof or the wall)
and
2. Centre to top corner + top corner to bottom corner, 9.57m
Why not
, what if I have only 7,5m+ of cable.
Take a look to those pictures, if they can leave cables as shown I can also push them through the wall and roof
http://www.refrigeration-engineer.co...ead.php?t=7553
Tell me something now
Your second solution for me is not right too, we are engineers. To make it properly we need 12.5m of cable. I like the best practice, sorry Chillin
Best regards, Josip
It's impossible to make anything foolproof because fools are so ingenious...
Don't ever underestimate the power of stupid people when they are in large groups.
Please, don't teach me how to be stupid....
No job is as important as to jeopardize the safety of you or those that you work with.
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04-04-2007, 03:30 AM #10
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Re: Running out of cable...
OK Josip, I see your point about messy wiring.
(the answer is still 9m)
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08-04-2007, 04:22 PM #11
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Re: Running out of cable...
Problem solved.Get a 100m drum, its bound to come in useful. LOLJonTakes a licking, keeps on ticking.
