Power pedestals with per side main breaker disconnects

Patent metadata

Field	Value
Publication number	US-11817680-B2
Application number	US-202117461241-A
Country	US
Kind code	B2
Filing date	Aug 30, 2021
Priority date	Aug 30, 2021
Publication date	Nov 14, 2023
Grant date	Nov 14, 2023

Abstract

Power pedestals with individual per side ground fault mains allow for service of breakers and receptacles without interrupting power to adjacent in-use power circuits and or boaters. In turn, ground fault mains eliminate the need for individual ground fault breakers tied to each receptacle. The power pedestals also allow for use of reverse Y adapters in the vessel to pedestal connection and allow for serviceability of single side or whole pedestal without disconnecting power to a string of pedestals on a loop feed circuits and can reduce overall cost of maintenance by eliminating costly individual ground fault breakers per-shore power connection.

First claim

That which is claimed is:

1. A power pedestal, comprising:
a housing comprising a first sidewall with externally accessible first and second power outlet receptacles and a second sidewall with externally accessible third and fourth power outlet receptacles; and
a power circuit in the housing coupled to an incoming bus, wherein the power circuit comprises a first ground fault circuit breaker coupled to first and second branch circuit breakers and a second ground fault circuit breaker coupled to third and fourth branch circuit breakers,
wherein the first and second branch circuit breakers are coupled to the first and second power outlet receptacles, respectively, and the third and fourth branch circuit breakers are coupled to the third and fourth power outlet receptacles, respectively, and
wherein the first, second, third and fourth branch circuit breakers are non-ground fault circuit breakers whereby the first, second, third, and fourth power outlet receptacles are free of connections to respective individual ground fault breakers.

2. The power pedestal of claim 1 , wherein the power circuit comprises a first side and a second side that are each electrically connected to a first lead, a second lead, electrical ground and electrical neutral of the incoming bus, wherein the first side comprises the first ground fault circuit breaker and the first and second branch circuit breakers and the second side comprises the second ground fault circuit breaker and the third and fourth branch circuit breakers.

3. The power pedestal of claim 2 , wherein only one of the first side or the second side of the power circuit further comprises a photocell and a light source coupled to the first lead.

4. The power pedestal of claim 3 , wherein the only one of the first side or the second side of the power circuit with the photocell and the light source further comprises a fuse coupled to the first lead and the photocell.

5. The power pedestal of claim 2 , in combination with a power distribution cabinet comprising a feeder breaker connected to the power pedestal and to a plurality of additional power pedestals defining a power pedestal loop feed bus, wherein the power circuit of each power pedestal is configured to provide an electrical disconnect from the loop feed bus allowing for serviceability of the first side or the second side of the power circuit or an entirety of the power pedestal without disconnecting power to a string of pedestals on the loop feed bus.

6. The power pedestal of claim 1 , wherein the first, second, third and fourth power outlet receptacles are marine grade, corrosion resistant receptacles.

7. The power pedestal of claim 1 , wherein the first and second ground fault circuit breakers are two-phase, 30 mA ground fault protected devices.

8. The power pedestal of claim 1 , wherein the first, second, third and fourth branch circuit breakers are two phase, 50 A (amp) devices.

9. The power pedestal of claim 1 , wherein the first, second, third and fourth power outlet receptacles are 50 A, 125/250V power outlet receptacles.

10. The power pedestal of claim 1 , wherein the first, second power outlet receptacles are configured to connect to first and second plugs of a reverse Y adapter in a vessel to power pedestal connection.

11. The power pedestal of claim 1 , further comprising an internal bus electrically connected to the incoming bus and to the first, second, third and fourth power outlet receptacles providing the power circuit.

12. The power pedestal of claim 11 , wherein the internal bus resides inside the housing above the incoming bus.

13. The power pedestal of claim 1 , further comprising a water supply connection coupled to the housing.

14. The power pedestal of claim 1 , wherein the housing comprises a third sidewall connecting the first and second sidewalls, and wherein the third sidewall comprises a removable panel or a pivotable panel, optionally wherein the third sidewall comprises a visually transmissive window.

15. The power pedestal of claim 1 , further comprising a first ground fault indicator and reset and externally accessible and adjacent the first ground fault circuit breaker on the first sidewall and a second ground fault indicator and reset externally accessible and adjacent the second ground fault circuit breaker on the second sidewall.

16. A method of providing ground fault protection to power pedestals, comprising, comprising:
providing a plurality of power pedestals, each with a power circuit in a power pedestal housing and coupled to an incoming bus, wherein the power circuit comprises a first ground fault circuit breaker coupled to first and second branch circuit breakers and a second ground fault circuit breaker coupled to third and fourth branch circuit breakers, wherein the first and second branch circuit breakers are coupled to first and second power outlet receptacles, respectively, and the third and fourth branch circuit breakers are coupled to third and fourth power outlet receptacles, respectively, and wherein the first, second, third and fourth branch circuit breakers are non-ground fault circuit breakers thereby eliminating individual ground fault breakers tied to each power outlet receptacle;
electrically disconnecting the first ground fault circuit breaker from the power circuit and while keeping the second ground fault circuit breaker operational and with the power circuit providing power to the third and fourth power outlet receptacles but not the first and second power outlet receptacles; and
servicing power circuit components of the power pedestal while the third and fourth power outlet receptacles are supplying power and the first and second power outlet receptacles are not supplying power without requiring a power down of an entirety of the power circuit.

17. The method of claim 16 , wherein the power circuit comprises a first side and a second side that are each electrically connected to a first lead, a second lead, electrical ground and electrical neutral of the incoming bus, wherein the first side comprises the first ground fault circuit breaker and the first and second branch circuit breakers and the second side comprises the second ground fault circuit breaker and the third and fourth branch circuit breakers.

18. The method of claim 17 , wherein only one of the first side or the second side of the power circuit further comprises a photocell and a light source coupled to the first lead, the method further comprising detecting environmental lighting conditions using the photocell and illuminating the power pedestal using the light source.

19. The method of claim 17 , wherein the power pedestal is one of a plurality of power pedestals connected to a common feeder breaker of a power distribution cabinet and defining a power pedestal loop feed bus, wherein the method further comprises allowing each power pedestal to provide an electrical disconnect from the loop feed bus allowing for serviceability of the first side or the second side of the power circuit or an entirety of the power pedestal without disconnecting power to a string of pedestals on the loop feed bus thereby allowing for serviceability of the first side or the second side of the power circuit or the entire power pedestal without disconnecting power to a string of the plurality of power pedestals on a loop feed circuit.

20. The method of claim 16 , wherein the first, second, third and fourth power outlet receptacles are marine grade, corrosion resistant receptacles.

21. The method of claim 16 , further co

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Seff Paul D
• Easton Jason D
• Van Fossen Andrew

Classifications

• H02B1/50 Primary

  Pedestal- or pad-mounted casings; Parts thereof or accessories therefor · CPC title

• B60L53/16

  Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles · CPC title

• B60L53/31

  Charging columns specially adapted for electric vehicles · CPC title

• H02G3/0493 Primary

  Service poles · CPC title