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felixsemion
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Join Date: Apr 2009
Posts: 18

Electric Cabling Works

05/09/2009 4:49 AM

I'm supposedly to install 9 nos submersible pump with 2.5(mm) + 1 core x 1.5mm(earthing) instead I used 6mm + 1core x 4mm(earthing). For your info, this pump will be run in syncronize pattern-for water fountain use. Will there be any effect on the syncronizing or loss of power. Kindly assist
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lyn
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Join Date: Oct 2008
Posts: 42355
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#1

Re: Electric Cabling Works

05/09/2009 5:29 AM

no
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vikramnegi
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Join Date: May 2009
Posts: 22
#2

Re: Electric Cabling Works

05/10/2009 4:06 AM

I believe its 2.5 Sq mm and not 2.5 (mm) and the same goes for the earthing too.

Considering these submersible pumps to be 3 phase ( Or even single phase ), there shouldnt be any effect on the synchronizing or Loss of power for the increase in cable size from 2.5 Sqmm to 6 Sqmm. Its just that you have paid extra on the cable cost, which is uneconomical .
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#3

Re: Electric Cabling Works

05/11/2009 3:54 AM

The voltage drop in the cable will be much lower.

The installed cable is "oversized".

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redfred
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Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

Join Date: Dec 2008
Location: Long Island NY
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#4

Re: Electric Cabling Works

05/11/2009 9:49 AM

Having oversized wire will not produce a noticeable effect on your synchronization. (For the nit pickers out there, I do believe an oscilloscope and test circuit can be configured to show the tiny timing difference that will occur. This delta will be overwhelmed by the many uncertainties of a real world system.) You will also have a small improvement in power loss from running oversized cable. My only concern, is that the heavier cable's insulation meets the conditions encountered.

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