15 KV cable underwater feeder

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15 KV cable underwater feeder

#219425 06/29/18 07:23 AM

Joined: Mar 2003

Posts: 849

Michigan

Y

Yoopersup

OP

Member

110.40 90c terms /reference to tables for ampacity. MV Cables.

Cables going underwater ? No table for that!

Article 328 MV Cable uses permitted (#1 Wet Location??)

There are cables rated for underwater.

Seems like code needs to catch up.

Are 15 KV dead break elbows rated 105 c or 90c ( For rating of conductor Ampacity?)

Last edited by Yoopersup; 06/29/18 07:34 AM. Reason: Add Question

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Re: 15 KV cable underwater feeder

Yoopersup #219426 06/29/18 03:45 PM

Joined: Jul 2004

Posts: 10,004

Likes: 36

Estero,Fl,usa

G

gfretwell

Member

FPL ran a couple miles of this stuff under the Estero Bay.
As for ampacity it will certainly be as good as free air.
Water will actually take the heat away faster.

[Linked Image from gfretwell.com]

Last edited by gfretwell; 06/29/18 03:50 PM.

Greg Fretwell

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ECN Forum Forums Code Related Discussion NEC & other Code issues 15 KV cable underwater feeder