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01-08-2011, 14:49
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#1
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Registered User
Join Date: May 2011
Boat: Simonis 50
Posts: 447
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Ship-to-Shore Power Cable
We need a new shore power cable and my electrician suggested that we use Ancor 6AWG three core AC cable - 50A, 125/250V, 6 Gauge, 4 Conductors. My concern is his price for this cable - 32 yards at $2200.00. What do you think?
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01-08-2011, 14:56
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#2
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Registered User
Join Date: Aug 2007
Location: Clear Lake Marine Services - Seabrook, Texas
Boat: Gulfstar, Mark II Ketch, 43'
Posts: 2,359
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Re: Ship to shore power cable
Why do you need 96'?
Is this for dock to boat or house to dock?
You look to be one cable short, boat that size should be 220 VAC
__________________
Formerly Santana
The winds blow true,The skies stay blue,
Everyday is a good day for SAILING!!!!
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01-08-2011, 15:28
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#3
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Registered User
Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,131
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Re: Ship to shore power cable
Pacer Marine advertising 6/4 for $12.29 ft.
__________________
so many projects--so little time !!
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01-08-2011, 16:15
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#4
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Resin Head
Join Date: Aug 2007
Location: Seattle WA
Boat: Nauticat
Posts: 7,205
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Re: Ship-to-Shore Power Cable
I recently got 75' at about 800$ after tax. Fisheries Supply...
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01-08-2011, 16:17
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#5
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Registered User
Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 4,063
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Re: Ship-to-Shore Power Cable
That price on Ancor wire sounds strange. You can buy 50ft 50Amp 125/250 Marinco 6152SPP cord sets for about $700.00 each. These cord sets are made from 6 ga. 4 conductor wire. It's probably Ancor wire since Marinco is the parent company of Ancor.
__________________
Retired from Hopkins-Carter Marine Supplies
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04-08-2011, 06:28
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#6
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Registered User
Join Date: May 2011
Boat: Simonis 50
Posts: 447
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Re: Ship to shore power cable
Quote:
Originally Posted by Unicorn Dreams
Why do you need 96'?
Is this for dock to boat or house to dock?
You look to be one cable short, boat that size should be 220 VAC
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The cable is for marina dock to boat. This was the cable recommended by our marine electrician - I would not know any better. Here in South Africa, all power cables have 3 internal wires. Having said this, I looked around at some pre-made cables sold elsewhere and noticed that some of these cable have 4 internal wires!? Why?
For example: Fisheries - Product Detail
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04-08-2011, 07:08
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#7
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,550
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Re: Ship-to-Shore Power Cable
The linked 4 wire cable is for 50 Amp 125/250V service.
The 4 wires will be:
1 - Black ungrounded hot (120V to Neutral)
1 - Red ungrounded hot (120V to Neutral)
240V between Black & Red
1 - Grounded White Neutral
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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04-08-2011, 07:27
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#8
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Registered User
Join Date: May 2011
Boat: Simonis 50
Posts: 447
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Re: Ship-to-Shore Power Cable
Quote:
Originally Posted by GordMay
The linked 4 wire cable is for 50 Amp 125/250V service.
The 4 wires will be:
1 - Black ungrounded hot (120V to Neutral)
1 - Red ungrounded hot (120V to Neutral)
240V between Black & Red
1 - Grounded White Neutral
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Hi Gord
So it seeems to for a dual current system 125 and 250 volt system. I would imagine that it "self adjusts" (for lack of a better word).
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04-08-2011, 09:12
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#9
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Registered User
Join Date: Aug 2007
Location: Clear Lake Marine Services - Seabrook, Texas
Boat: Gulfstar, Mark II Ketch, 43'
Posts: 2,359
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Re: Ship-to-Shore Power Cable
The system is designed to have 120v go to each side of the breaker box, if 240v is needed the breaker connecys both sides of the box to get the 240V.
That's why most breaker boxes usually have 2 roes of switches..
__________________
Formerly Santana
The winds blow true,The skies stay blue,
Everyday is a good day for SAILING!!!!
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04-08-2011, 10:30
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#10
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Registered User
Join Date: May 2011
Location: Miami Florida
Boat: Ellis Flybridge 28
Posts: 4,063
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Re: Ship-to-Shore Power Cable
"The cable is for marina dock to boat. This was the cable recommended by our marine electrician - I would not know any better. Here in South Africa, all power cables have 3 internal wires. Having said this, I looked around at some pre-made cables sold elsewhere and noticed that some of these cable have 4 internal wires!? Why?"
I think you may be running into the European 220 volt systems. They use three conductors, not the four conductors used in US systems.
Take a look at the Marinco International series of electrical fittings:
http://www.marinco.com/files/media/p...o%20pg32_6.pdf
Wiring instructions: http://www.marinco.com/files/support...als/102745.pdf
__________________
Retired from Hopkins-Carter Marine Supplies
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04-08-2011, 11:13
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#11
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Registered User
Join Date: Dec 2008
Location: St. Georges, Bda
Boat: Rhodes Reliant 41ft
Posts: 4,131
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Re: Ship-to-Shore Power Cable
Quote:
Originally Posted by HopCar
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My thought as well, but OP says 125/250 ??
__________________
so many projects--so little time !!
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04-08-2011, 12:17
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#12
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Senior Cruiser
Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 49,550
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Re: Ship-to-Shore Power Cable
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"
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04-08-2011, 17:27
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#13
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Registered User
Join Date: May 2011
Boat: Simonis 50
Posts: 447
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Re: Ship-to-Shore Power Cable
Here is the reply from the marine electrical company;
Quote:
A four wire cable system refers to boats with 240 and 120Vac equipment system requirements. Your boat is wired for 220Vac only but can accept 120Vac input from the dock.
The isolation transformer installed on board will step the 120Vac input voltage up to 220Vac. A three core cable is all you need.
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04-08-2011, 18:47
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#14
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Moderator Emeritus
Join Date: Jul 2010
Location: Key West & Sarasota
Boat: Cal 28 "Happy Days"
Posts: 4,210
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Re: Ship-to-Shore Power Cable
The reason for 4 conductors is one for each 120V leg (2) a neutral, and a ground
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Any fool with a big enough checkbook can BUY a boat; it takes a SPECIAL type of fool to build his own! -Capngeo
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04-08-2011, 19:46
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#15
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Registered User
Join Date: Feb 2009
Location: A real life Zombie from FL
Boat: Gulfstar 53 - Osiris
Posts: 5,416
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Re: Ship-to-Shore Power Cable
Quote:
Originally Posted by MooseMoney
We need a new shore power cable and my electrician suggested that we use Ancor 6AWG s three core AC cable - 50A, 125/250V, 6 Gauge, 4 Conductors. My concern is hiprice for this cable - 32 yards at $2200.00. What do you think?
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So the OP is wired for European AC and only needs 3 conductor cable and not 4 conductor. But anyway there is portable heavy duty cables available for less than a third of what he was quoted.
- - It is not necessary to purchase "Marine" shore power cable when you can use flexible electrical cable from a local electrical supply house for half or less of the "Marine" price - especially when purchasing very long cables like the 100 ft (32m) the OP listed.
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