mpe803a

[m32825]

#6 has the current carrying capacity you need, you'll be fine. Voltage drop for 50' of #6 is only a volt more than #4 at max current. I went with #4 because it's my hobby and I wanted some overkill. Code tells you the minimum required to prevent fires, the only penalty for going bigger is to your wallet. I figured it's not that long a run and I'm only doing it once so why not?

-- Carl

 

[mchlsprgn]

#6 has the current carrying capacity you need, you'll be fine. Voltage drop for 50' of #6 is only a volt more than #4 at max current. I went with #4 because it's my hobby and I wanted some overkill. Code tells you the minimum required to prevent fires, the only penalty for going bigger is to your wallet. I figured it's not that long a run and I'm only doing it once so why not?

-- Carl

I figured it was close . I have a odd situation, in that the power goes from the main out to a sub panel and back from the gen on the same wire. I need to insure I can't back feed utility power to the gen That would be a disaster !!! any suggestions would be appreciated Mike PS this is becoming a hobby

 

[Zed254]

I have a odd situation, in that the power goes from the main out to a sub panel and back from the gen on the same wire. I need to insure I can't back feed utility power to the gen

Post 191. Study the picture. I cannot close my 70 amp breaker unless the main disconnect switch is open: this prevents back feeding Dominion Energy's system when I am on generator power. I cannot close the main disconnect switch unless the 70 amp breaker is open: this prevents Dominion Energy power from energizing my generator.

Picture shows my house on Dominion Energy: main disconnect is closed.

 

[mchlsprgn]

Post 191. Study the picture. I cannot close my 70 amp breaker unless the main disconnect switch is open: this prevents back feeding Dominion Energy's system when I am on generator power. I cannot close the main disconnect switch unless the 70 amp breaker is open: this prevents Dominion Energy power from energizing my generator.

Picture shows my house on Dominion Energy: main disconnect is closed.

Post 191. Study the picture. I cannot close my 70 amp breaker unless the main disconnect switch is open: this prevents back feeding Dominion Energy's system when I am on generator power. I cannot close the main disconnect switch unless the 70 amp breaker is open: this prevents Dominion Energy power from energizing my generator.

Picture shows my house on Dominion Energy: main disconnect is closed.

pic did did not come . I'd like to see Mike

 

[Zed254]

pic did did not come . I'd like to see Mike

Main disconnect is closed: I'm on power company's amps. If I switch the main disconnect to the right - open - I lose Dominion Energy's feed. The metal cover will now drop down and I will be able to close the contacts on my 70 amp breaker that feeds my panel when my generator is needed. In this configuration I cannot close the main disconnect switch and back feed my generator when the power comes back on. To do this I must first open the 70 amp breaker to allow the metal cover to be moved up and out of the way of my panel's main disconnect switch.

 

[Daybreak]

I figured it was close . I have a odd situation, in that the power goes from the main out to a sub panel and back from the gen on the same wire. I need to insure I can't back feed utility power to the gen That would be a disaster !!! any suggestions would be appreciated Mike PS this is becoming a hobby

Howdy,
You need to hire a electrician.

 

[DieselAddict]

Howdy,
You need to hire a electrician.

+1, There are solutions for that problem but they will require some specialized help to implement correctly.

 

[mchlsprgn]

+1, There are solutions for that problem but they will require some specialized help to implement correctly.

I agree . an electrician (who is friend) is coming .