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Dayton generator model 3w738d How many neutral ground bonds ?, Generator trips on ground fault when plugged into house.

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Posted on Jan 02, 2017

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SOURCE: Lombardini diesel generator starts and runs fine but no elecpower

remove the covering panel and expose the internals , check for loose/disscontected push on ( lucar ) connectors , if these are fine it is most likely the excitation capacitor is deffective , replace with exactly the same value/voltage rating/duty cycle . the capacitor is usual 1 or up to 3 cylindrical tubes with 2 wires comming from them , always take a note of exactly what wires you have taken off :) hope this helps


Posted on Oct 20, 2009

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1 Answer

Convert 3 wire plug generator to 4 wire plug cord


First verify that the voltage is the same. It sounds like you have a single phase system which is 2 voltage circuits and 1 neutral. The 4th prong will be the ground. To do this properly you will need to get a new 4-wire chord for the generator with a cap that matches the one for your house. On the Generator side, the 4th wire will attach to ground.

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1 Answer

My generator baker trip when i strat it


A lot of new generators have RCDs fitted and you con NOT plug them in to your house because the RCD is in front of the MEN or neutral link you will need to get an Electrician to rewire the generator,
If that"s not the problem what every you are plugging in to it has a short in it or it may be the generator it"s self.

Oct 26, 2016 | Electrical Supplies

1 Answer

The 220 plug has 4 leads and my 220 compressur has 3 wires how do i make the conection


The four wire 220 twist lock receptacle Two hot wires, one neutral, and a safety ground. Depending on your generators setup the neutral and ground are bonded as one; unless, it setup for a floating neutral.
You would normally connect the two hots and neutral. and leave the ground open on the four prong twist lock plug. Just make sure the compressor is earth grounded on its end.

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1 Answer

I need to know exactly what wire to disconnect on my wh6000s portable generator to float the neutral so i can hook up to home panel with interlock switch. I will ne using the 30 amp 25 ft. cord into a


You need to have the wiring diagram for the generator but they didn't include one in the owners manual and nothing is shown the IPLs that I found.

DISCLAIMER NOTE: The following should be done only by knowledgeable service personal trained in area of servicing these portable generators. The information is what service personal needs to know in order to unbond the neutral and chassis ground. If done incorrectly you will put yourself and others in danger of electrocution.

To determine if your generator uses a floating or bonded neutral perform this simple test. With the engine off, use an ohm meter between the chassis ground and neutral conductors in the outlet. If it indicates open circuit, the neutral is floating. A short circuit will indicate neutral bonded to ground. I don't recommend doing this to household circuits due to the possibility of exposed AC and damage to the meter.

The jumper from ground to neutral, likely on one or both the 120VAC duplex outlets that needs to be removed. Connect ground connections on both outlets to the chassis ground and ground the generator chassis and frame to earth ground.

Jan 08, 2015 | Electrical Supplies

1 Answer

How do I disconnect neutral bond on a dewalt generator


Please be careful, you need a neutral bond for the GFI outlets to work when you are using the generator as a mobile unit and grounding the generator with a ground rod or building. When you are merging with a building with a grounded system, simply remove the two neutral wires (White) at the generators internal terminals from the generator frame but keep them connected together and terminate connection.

Bonding on a generator questions


Q. If I was to keep the tie between ground and neutral in the generator during standby use, would I have to break the neutral tie coming into home from grid?



A. Never disconnect the neutral line as it enters your house. It is held very well at ground potential. Each transformer is grounded, and every home supplies ground as well. The neutral coming in is the reference to both live lines, and without it, anything connected to either live line could see up to 240VAC depending on what is across the other side. Install a proper transfer panel, and the neutral issue will be taken care of.

Q. Where would I ground the generator at this time in this situation?



A. The generator will be grounded through the extension cord plugging into the transfer panel. Your home should have one ground connection only, adding a ground rod at the generator could create other unwanted safety issues.

Q. At this time is it safe to run an extension cord off generator direct to power a drill for example?



A. Yes. The transfer panel will take care of any neutral and ground bonding issues, provided things are wired correctly.

Q. If I was to lift the neutral to ground in generator and tag generator as floating neutral, then would I leave neutral unbroken in service panel?



A. Yes. The common point for neutral and ground will be provided in the main electrical panel.

Q. Could I use the 15 amp outlets on generator safely in this position to run a drill outside? I see generators with floating neutral have a 15 amp duplex outlet on cabinet also. In this situation would I install a ground at the generator?



A. If you were connected to the house with the four conductor extension cord nothing else will be needed.

Q. If you have a floating neutral generator and use it in a stand alone mode, nothing to do with a home, do you place a ground rod down? What happens with the neutral and ground connections? What about a generator on a truck or trailer?



A. In stand alone use, you should connect to a ground rod. Neutral and ground should also be bonded in the generator. The easiest way to take care of this is with a dummy plug inserted into one of the duplex outlets or the twistlock outlet. Jumper ground and neutral in the plug. A generator on a truck or trailer will follow the same rules for neutral and ground bonding, ground rods, etc.

Q. If the generator is a grounded neutral type and you only run the two live lines to the house in an illegal back feed situation where main disconnect is off but neutral still connected will I have 120 volts available in house between each hot leg and the utility grid system neutral? Would someone get shocked if standing next to generator at that time and touched it creating a path from ground to the generator?



A. The only time I would consider backfeeding a house is if the main lines were torn down and laying on the ground. I did this once after Hurricane Juan caused a tree to tear the lines off a neighbors house. The lines were still connected at the pole and were live once commercial power was restored, but there was no possibility of the generator backfeeding to the street. It took almost two weeks before the power company could get them reconnected. We still turned off the main breaker and installed a padlock to prevent it from being turned back on. The house was totally isolated from the grid so I felt it safe to connect in this manner. The generator connected via a 20 amp two pole breaker in the main panel, and there was power available for everything in the house - well pump, electric stove, all lights, etc. Generator neutral was floating as described above. Power supply was limited, they were careful not to overload and trip the generator breaker.

Q. At the same time I went to a friends home and after killing the main breaker and all 240 breakers ran a 3 wire cord from the generator 240 volt outlet direct to his pump, now isolated from the house panel using both 120 volt lines and ground. I then ran a 12 gauge 20 amp extension cord from the generator duplex outlet to a double male pig tail and back fed a kitchen outlet so he could have lights in the house. 1/2 the house to be exact. This was also a grounded neutral generator but we didn't have a problem. I did however drive a ground rod at the generator.



A. I think you were lucky this time. Electricity can be potentially dangerous and can kill and burn if not used correctly. Double male plugs should never be used as invariably there is exposed 120V on one end. If you miswire one end you can send 120V onto the neutral. At best this will trip a circuit breaker, but not knowing what else is done, could easily create a lethal voltage on the chassis of certain equipment. It gets back to doing something properly or not doing it at all. Why run the risk of personal injury or death?

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1 Answer

Honda generator eb4000x gfic tripping


if you are using a lead that has a active , a neutral and a ground wire in the lead , there is no real reason to ground the gen set itself
the neutral will not be bonded to the frame as that would create a possible short during operation
the circuit is simple --active is the power wire --neutral is the return wire from the applications and the ground wire is for dead shorts and to prevent electrocution

Sep 09, 2017 | Honda Electrical Supplies

1 Answer

Where do you remove the Ground Neutral bond on a EU6500is generator? I need to do this to hook it up to a transfer switch as per Service Bulletin #20.


Page 39 of the current owners manual for the both EU6500 and the EM5000 generators indicate that there is not a neutral ground bond on these units.

Per the wiring diagram, the ground pin on the outlets is connected to the frame ground of the generators (on both generators). To have grounded electrical service, a bond wire would connect the generator frame to the ground terminal on the transfer switch. The ground system from the breaker / distribution box (usually to a ground rod) then serves as the electrical ground for the generator, as well as the balance of the rest of the system, satisfying NEC requirements.

See Page 39 in both manuals:
EU6500 EM5000

"The system ground is not connected to the AC neutral
wire. If the generator is tested with a receptacle tester, it will not show the same ground circuit condition as for a home receptacle."

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1 Answer

Should the earth / neutral output of a kubota new boy generator be bonded externally ? It does not appear to be bonded internally as socket tester shows 'no earth', yet RCD does operate on a leakage fault.


You only need to bond it to earth if you are working near water it should have a GFI fault breaker on it, if there is no earth showing check the plug and see if the wire has broken inside the duplex box and if the earth wire has broken off the duplex receptacle. My suggestion is to bond it to a 6 foot grounding rod if in use on the ground and a wet area. And of course following local laws and NEC rules and regulations.

Nov 30, 2009 | Electrical Supplies

2 Answers

Trailer AC works plugged into house plug but trips breaker on generator and a light plant why??


Poor grounding on the generator or connecting wires. Weak breaker on the generator. Locked rotor amps to high for generator circuit. Weak capacitor causing too high amps for generator.

Jul 08, 2009 | Heating & Cooling

2 Answers

Microwave wont work on generator power!


PLEASE CHECK THE POWER CONSUMPTION ON THE APPLIANCE i think it might be a lot more than ur gen set can supply

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