98 330 DA with 2 30 amp inlets....
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06-14-2022 04:17 PM
98 330 DA with 2 30 amp inlets. I run a single cord to side of boat and then splitter into 2 inlets. Bottom or secondary line which powers air/heat and micro outlet is fine. Top line or main is indicating reverse polarity thus nothing working i.e. ac converter, fridge, outlets ect...
Any help on why top inlet would be bad but bottom is ok?
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06-15-2022 04:12 AM
Is the boat being powered by a single 120V / 240V, 50A cord and a 50A plug to two 30A receptacle adapter, like a Marinco 153AY, or is the boat being powered by a single 120V, 30A cord and a 30A plug to two 30A receptacle adapter, like a Marinco 157AY?
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06-15-2022 08:18 AM
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06-15-2022 08:44 AM
A properly qualified person could measure the 120VAC voltages from the AC inlet to the salon distribution panel.
https://upload.wikimedia.org/wikipedia/commons/0/0d/NEMA_simplified_pins.svg
A properly wired receptacle will have 120VAC (nominal) from hot/line to both neutral and to ground.
It is likely that the factory used black insulation for the hot/line conductor, white for the neutral and green / yellow for the ground.
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06-15-2022 08:56 AM
It is VERY easy to overload the components in that configuration by pulling waaay too much current through the system.
Part of the solution should be to retire that NEMA L5-30P to twin NEMA L5-30R splitter.
It should be replaced w/ twin 120VAC 30A power cords or a single 120VAC/240VAC 50A power cord w/ a NEMA SS2-50 plug to twin NEMA L5-30 receptacles.
Part of the investigation should include investigation for damage from operation in this method.
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06-15-2022 09:08 AM
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06-15-2022 10:40 AM
The factory uses DC lights, powered by the battery. Also battery powered is the head and water pump. The 'fridge is dual power, for both AC and DC. The AC converter (battery charger), AC receptacles and air conditioner(s) are AC powered only.
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06-15-2022 06:25 PM
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06-19-2022 12:30 AM
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06-19-2022 06:38 PM
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06-20-2022 03:47 AM
It was mentioned that the wires feeding the inlet were corroded, but note that if the inlet blades are corroded, then it is likely that the connecting cord also has corrosion on those receptacle connections.
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