Marine Power Pedestals

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csully12

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Has anyone run into an instance where they had to install 208V 3 phase power for a dock power pedestal? I am having trouble trying to find a manufacturer that can provide a 50 Amp 3 phase twist lock pedestal to accomodate the loads I need to feed on the boats.
Any help will be appreciated.
 
Call Eaton (Marina Power and Light). Betty, Jane, Cathy all have the act together. MPL is the best in the business IMO.

BTW, a 50-amp 3-phase receptacle is very odd.

Be careful about feeding a 50-amp single-phase receptacle with 2 phases of a 208Y/120V service, it's a no-no per 555.19(A)(3)
 
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whats the input to the boat? 50a 3 phase 4 wire? I'm not aware of a 5 pole 50 amp twistlock, dont you need pin and sleeve for that?
 
There is no input to the boats right now. We are in the process of electrifying the pier and are looking into the feasibility of it. The boats that are there currently are equipped with generators(various kW depending on the boat) that supply the ship panels with 120/208 3 phase 4 wire power. We were looking into supplying each pedestal with a 50 Amp connection.
 
csully12 said:
There is no input to the boats right now. We are in the process of electrifying the pier and are looking into the feasibility of it. The boats that are there currently are equipped with generators(various kW depending on the boat) that supply the ship panels with 120/208 3 phase 4 wire power. We were looking into supplying each pedestal with a 50 Amp connection.
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there isnt a 50 amp 5 pole twistlock. You would have to go 60a pin and sleeve.
 
augie47 said:
In a creature resembling a twist-lok, Hubbell does have a 3 pole 4 wire and 2 pole 3 wire. I have not seen a dock requirement for a 50 amp 5 pole as of yet.
http://www.hubbell-wiring.com/marine/pdf/2004Marine_Catalog.pdf
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that 3P4W 50a connector is a 125/250v single phase, two hots, neutral, and ground. The OP's application is three phase, and he said three phase 4 wire, which would be a 5 wire connector. There is a three phase 50a twistlock, but its 3P4W three hots and a ground, no neutral, and I do not believe anyone makes it in a marine / corrosion resistant version.
 
Opps sometimes I fail to read what I see. I failed to see his load was 3 phase, I had in my mind only the supply was 3 phase. Sorry
 
augie47 said:
Opps sometimes I fail to read what I see. I failed to see his load was 3 phase, I had in my mind only the supply was 3 phase. Sorry
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While this is not what the OP said, I think this is what's going on. My contact at MPL thinks this might be a job in Mexico which I believe uses 220/127 instead of 208/120. A boat using single-phase power, 2 out of 3 phases of a wye, would stand a better chance of no problems in Mexico (if I'm correct about the voltage) than it would in the USA using 2 out of 3 phases from a wye at 208/120.
 
This is not in mexico. It's a job in the US. These are large commercial fishing boats that are currently equipped with 208 Volt 3 Phase 4 Wire systems. I'm not counting the ground. Digging into this a little more it looks like I will have to go with a 60 Amp Pin and sleeve connector.
 
csully12 said:
This is not in mexico. It's a job in the US. These are large commercial fishing boats that are currently equipped with 208 Volt 3 Phase 4 Wire systems. I'm not counting the ground. Digging into this a little more it looks like I will have to go with a 60 Amp Pin and sleeve connector.
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Do they have a shore power cord? If so, what plug is on the cord?
 
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