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Usage Question 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?

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I have a McCulloch 11HP FG6000MC Generator. Upon starting it will run well for about 10 seconds . Then it start to chock down then pick back up. It repeats this same process for about 2 minutes. Then it will even out after load is applied again about 2 minutes into the run cycle. Any ideas what may be causing this to happen?

Posted on Sep 17, 2008

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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.

Posted on Aug 27, 2008

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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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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 | Power Generators

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

How to float the neutral on a YDG 3800E and YDG 5500E?"


Why would you isolate the N and G? If you are using it to supply a home then they should be, if tied in permanently. But only on a 2 pole ATS. The gen ground and building ground must be common, or you will loose the fault path. I would NOT recommend you use this generator in that way.

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1 Answer

On a 12 lead generator to achieve 480volts. would i have to tie 4 -7 5-8 6-9. 10 11 12 to neutral. and 1 2 3 are line leads. i can get 240 volts from my center taps, for my regulator. cause line to...


The terminals you listed are correct.
T4 -T7 mated
T5 -T8 mated
T6 -T9 mated
10, 11, 12 combined connection

L1, L2, & L3 = output / line leads

However you should have 277 VAC line to ground and 480 VAC Line to line (Across any 2 phases)

So terminals 1, 2 or 3 to ground should be 277 VAC (L1 L2 or L3)
1-2 or 1-3 = 480 VAC
any combination of
1 , 2, or 3 to each other = 480 VAC

As a "generator man" with 19 solutions one being "You might have to sting it" you should know this and be able to use the diagram on the power head to get your desired voltages unless the wiring data plate is missing. I have had to dial in voltage regulators when switching between 240 and 480 to prevent automatic shut downs from over / under voltage.

Kelly

Sep 18, 2011 | Power Generators

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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I have a Yamaha 2400i genset. It is showing voltage from the neutral to ground and the inverter it feeds is in alarm with reverse polarity. Doesn't this mean the neutral is shorted to the hot windings...


It is likely not a winding short but more likely in wiring or components in the inverter. Remove output connections and with simple loads like light bulbs check the conditions of the genset itself.

Note: Small digital voltmeters will respond to the tiny currents caused by the capacitance of wiring and windings giving false readings. Use know loads like light bulbs to draw current during test.

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1 Answer

I have a yamaha 3000isb generator. checking


That sucks! Maybe it's because your a fireman! LOL

May 08, 2010 | Yamaha EF2400iS Portable Generator

1 Answer

Stops and starts


Hi there,
Most home standby generators are setup to run once a week so as to keep the engine lubed up and the generator windings dry. So if yours is comming on once a week at about the same time and running for something like 15 minutes, that's what is going on.
On the other hand, if your generator is starting and the switch is transferring somewhat randomly, you could have a problem with the neutral connection in your system, the power could really be going out and coming back on, and/or the control board in your generator could be broken.

Regards,
Carl

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