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15 KV cable underwater feeder #219425 06/29/18 08:23 AM
Joined: Mar 2003
Posts: 849
Y
Yoopersup Offline 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 08:34 AM. Reason: Add Question
2017 / 2014 NEC & Related Books and Study Guides
Re: 15 KV cable underwater feeder [Re: Yoopersup] #219426 06/29/18 04:45 PM
Joined: Jul 2004
Posts: 9,496
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gfretwell Offline
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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 04:50 PM.

Greg Fretwell

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