7500w hybrid generator issues

[Spiffy]

Tonight power went out. I hooked up my truck as I have several times before. I have a certified power distribution panel.
Upon starting my truck, selecting power mode I'm getting all 240v on one leg and 0 on the other.
Unfortunately something has burned out in ny house because I smell burnt chips.
What would cause this?

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[HammaMan]

Ooof -- that'd be the neutral not making contact. Yes, that will cook things as some devices could see over 200v while others only 40v.

 

[Spiffy]

Ya. Lost my washing machine control and my coffee machine. Not to bad this time.
2 years ago a storm caused the 18k feeder to short to one leg of my house feed. That caused extensive damage.

You mentioned neutral not making contact. Would that be somewhere in the truck or external?
I have current issues with my truck now. 12v state of charge, trailer brake module again. No interior lighting unless truck is on.
Like I mentioned b4 I haven't had this issue of 240 on one leg in the past.

Can you suggest diagnosis techniques?

 

[Kanuck]

Measure between neutral and each leg at the plug on the truck... should be 120 v on each leg to neutral.
Then at the end of the cord that connects to the house... should be the same.

If all reading correctly...problem is in the house.

 

[Spiffy]

I spent some time re reading the posts from the past. I kind of understood the bonded vs floating ground issue. Code and safety aside just for this subject I don't remember how my setup is.

Essentially here is what I do.

Flip main breaker off. disconnects from the feed.
Connect a 240v cable from my truck to a panel in the garage. 3 prong welder receptical. Garage is fed from main house panel.
Start truck and select generator mode. Flip 240v garage breaker on.
I know this is not the safe way.
It's worked fine in the past.
Should I remove the ground from the cable or not?

I have 120v on each leg on the truck now.

 

[Kanuck]

May have been a bad connection...
something not connecting ...
Hard to tell from a distance.

 

[HammaMan]

I spent some time re reading the posts from the past. I kind of understood the bonded vs floating ground issue. Code and safety aside just for this subject I don't remember how my setup is.

Essentially here is what I do.

Flip main breaker off. disconnects from the feed.
Connect a 240v cable from my truck to a panel in the garage. 3 prong welder receptical. Garage is fed from main house panel.
Start truck and select generator mode. Flip 240v garage breaker on.
I know this is not the safe way.
It's worked fine in the past.
Should I remove the ground from the cable or not?

I have 120v on each leg on the truck now.

A 240v 3 prong plug has no neutral -- I have no idea how you've wired it up.

 

[Tigmd99]

Maybe it is time to call electrician to diagnose??? And do it right??

 

[scott011422]

Yeah, I'm not sure its even possible for the truck to give 240 on one leg. Each leg of 120v is from a separate inverter. I would lean on the house too.

 

[dafish]

A 240v 3 prong plug has no neutral -- I have no idea how you've wired it up.

Hamma, kind sir, that's not correct. The NEMA 6-30 is 2 hot legs and ground. The 14-30 is 2 hot legs and neutral, and the 14-30 is all 4.

Just sayin...

 

[scott011422]

Hamma, kind sir, that's not correct. The NEMA 6-30 is 2 hot legs and ground. The 14-30 is 2 hot legs and neutral, and the 14-30 is all 4.

Just sayin...

14-30 is 2 hots 1 ground and 1 neutral.

10-30 and 10-50 dont have a ground.

 

[powerboatr]

Call an electrician
We had back feed a few years ago in the bus, when an inverter solenoid failed .we had 2 hots on each leg
Fried microwave, tv, clock and a couple feet of wire in the run to main panel and the cord .
Solenoid was to fail in only place coukd have ppwer it was a mess
We caught it in a few seconds..you know that death hum. Like a locked up motor followed by release of smoke.
Very lucky we got power killed fast

#8 wire melting is ugly

 

[HammaMan]

Call an electrical
We had back feed a few years ago in the bus, when an inverter solenoid failed .we had 2 hots on each leg
Fried microwave, tv, clock and a couple feet of wire in the run to main panel and the cord .
Solenoid was to fail in only place coukd have ppwer it was a mess
We caught it in a few seconds..you know that death hum. Like a locked up motor followed by release of smoke.
Very lucky we got power killed fast

#8 wire melting is ugly

Indeed, you can't put the magic smoke back into electronics. So easy to release it, impossible to put it back in.

 

[dafish]

Hamma, kind sir, that's not correct. The NEMA 6-30 is 2 hot legs and ground. The 10-30 is 2 hot legs and neutral, and the 14-30 is all 4.

Just sayin...

Argh... Typo above corrected. sigh..

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