120 ac connectors

Discussion in 'OnBoard Electronics & Controls' started by Andrew Holecek, May 4, 2024.

  1. Andrew Holecek
    Joined: May 2024
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    Location: NY

    Andrew Holecek New Member

    Hello all. I've tried to get more info on this but cannot find any answers. I work for a company that builds house boats. And from what I've read and have been told wire nuts are not allowed to be used at all. So in the areas such as in a switch box where nuetrals and grounds are tied together what kind of faster is to be used? Keep in mind these structures are essentially residential structures built on pontoons parked in Marinas on the East Coast. No engines or flammable compartments at all. Thank you.
     
  2. Rumars
    Joined: Mar 2013
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    Location: Germany

    Rumars Senior Member

    Crimped on ring terminals and screw terminal blocks with plastic covers.
    Here's a good article on proper crimping. Marine Wire Termination - Marine How To https://marinehowto.com/marine-wire-termination/

    If a houseboat is insured as a boat it should respect ABYC wiring standards, and your company should have a copy of those. It doesn't matter if the thing moves or not, the insurer wants to see multi strand copper wire and crimped terminals not solid Al wire and wire nuts.
     
  3. Andrew Holecek
    Joined: May 2024
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    Location: NY

    Andrew Holecek New Member

    The wiring we use is marine grade wiring. It's tin coated stranded wiring. We also use the crimp open spade ends when connecting to receptacles and switches. But within the switch box there could be 3-4 wires that are bundled together such as the nuetrals and grounds. So the proper way to connect these is to use ring crimp on connectors and blocks? Ok so I found out that friction type connectors can be used such as the wagon lever type if the amperage is below 20 amps.
     
    Last edited: May 5, 2024
  4. philSweet
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    Location: Beaufort, SC and H'ville, NC

    philSweet Senior Member

    Nope - not allowed.

    The one and only place that neutral (ac or dc) may be connected to GROUND is in the shore pedestal. You can not tie either AC neutral to ground or DC neutral to ground in the boat. And no appliance or equipment that does so is allowed on boats, so no regular household air conditioner, fridge, battery charger, oven, freezer, microwave, furnace - nothing. They all must be marine rated, isolated ground appliances. It is normal to tie AC neutral and DC neutral together at exactly one point in the boat.

    If the shore power is disconnected and there is an onboard generator, then the neutral and ground are tied together at the genset when it is running, and that connection is isolated by the switchgear when the boat is plugged in and the genset is offline.
     
    Last edited: May 5, 2024
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  5. Andrew Holecek
    Joined: May 2024
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    Location: NY

    Andrew Holecek New Member

    I think you misunderstood what I was saying. In the switch box. We normally connect all the nuetrals together as well as all the grounds together. The hots of course connect to the switch. The nuetrals and grounds are never tied together as the panel is essentially a sub panel.
     
  6. C. Dog
    Joined: May 2022
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    Location: Coffs Harbour NSW Australia

    C. Dog Senior Member

    Would you not be better off addressing these issues with the local statutory authority? They accept or reject your work on the basis of their rules.
     
  7. philSweet
    Joined: May 2008
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    Location: Beaufort, SC and H'ville, NC

    philSweet Senior Member

    Okay, got it. That is done with terminal strips (bus bars).

    https://www.amazon.com/Blue-Sea-Sys...U3ng7bVLlBR4iY1auRqpA-b8fRTFN6-RoC-ToQAvD_BwE

    [​IMG]
     
    Last edited: May 5, 2024
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  8. philSweet
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    Location: Beaufort, SC and H'ville, NC

    philSweet Senior Member


  9. Barry
    Joined: Mar 2002
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    Barry Senior Member

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