Transfer switch for home electric

AlpineFunco said:
Technically no. He is not isolating the panel from the grid. 
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IDK without seeing the switch it appears to be a break before make set-up and they are running the neutral thru the  switch.  My biggest concern would be if you were to switch into generator mode while you had grid power would the male plug prongs be hot.

 
MWB said:
IDK without seeing the switch it appears to be a break before make set-up and they are running the neutral thru the  switch.  My biggest concern would be if you were to switch into generator mode while you had grid power would the male plug prongs be hot.
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You're losing me on the "break before make set-up" comment. But it looks to me like if the generator is running and supplying power to the panel it would still be sending power through the main and back into the grid. 

And yes, it sure seems that those prongs would be hot if there was grid power and it got switched into generator mode.

 
Lots of ways to make this type of transfer happen. Biggest thing is the AHJ ( Authority Having Jurisdiction).  First and foremost the switch needs to be UL listed for the purpose it is being used for, Next if the Utility company has a list of allowed installs and last the city, county or state.   Put a UL listed installed per NEC next to your service entrance section and the meter reader or any utility worker see's it and it is not allowed your taking it off or they take the meter.

AlpineFunco said:
You're losing me on the "break before make set-up" comment. But it looks to me like if the generator is running and supplying power to the panel it would still be sending power through the main and back into the grid.
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break before make, just means that one thing only happens at a time.  with the hot and neutral both going thru this switch only one source of energy is present leaving that switch at a time and there is no way for it to not happen that way, unlike just back feeding a breaker.

And no power from the generator should only be going from the gen to the switch and out to the in this case to the furnace. Even if the power came back on it wouldn't be going to the furnace. If power came back on and the gen was running no mixing of power and once your gen ran out of gas.... Your furnace wouldn't be working until you flipped the switch.,

 
So if you do a solar system, do they use a transfer style switch 

 
Sandkist said:
100 to 200 milliamps across your heart can kill you.
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all smart mechanics pull plug wires off of a running engine with one hand and you do not put your other hand on the car/fender (to not complete the circuit )

that would also include not pressing your pecker against the car at the same time either.  be like a birdie on the wire!

 
MWB said:
Lots of ways to make this type of transfer happen. Biggest thing is the AHJ ( Authority Having Jurisdiction).  First and foremost the switch needs to be UL listed for the purpose it is being used for, Next if the Utility company has a list of allowed installs and last the city, county or state.   Put a UL listed installed per NEC next to your service entrance section and the meter reader or any utility worker see's it and it is not allowed your taking it off or they take the meter.

break before make, just means that one thing only happens at a time.  with the hot and neutral both going thru this switch only one source of energy is present leaving that switch at a time and there is no way for it to not happen that way, unlike just back feeding a breaker.

And no power from the generator should only be going from the gen to the switch and out to the in this case to the furnace. Even if the power came back on it wouldn't be going to the furnace. If power came back on and the gen was running no mixing of power and once your gen ran out of gas.... Your furnace wouldn't be working until you flipped the switch.,
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So in that video the generator would be powering the furnace, and only the furnace, correct?

 
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