islandman
Can the power for the T1 connection be taken from from the same breaker as the N1 and N2 monitor source - obviously from only one side of the 240V N1/N2 breaker?
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bronco
no because if utility is lost you have no power to charge the batt.
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islandman
True bronco, but unless the generator is running, I will not have any power to the N! and N2 (or for T1 either) anyway. Correct? This is a manual, interlock disconnect setup, so the N1 and N2 are only being hooked up so the auto test run will work.
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Skip Douglas SkipD
You need to have a charger on the battery at all times.

If you're doing an off-grid generator system, a solar charger makes a lot of sense.

If you have a standard utility power and backup system, you want the charger powered by a circuit that is powered by utility power when present and by the generator power when utility power is out.
Skip Douglas
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islandman
SkipD - that's what I have, the breaker that I'm taking the N1 and N2 off of will be powered by the generator after I manually disconnect utility power, so I guess the question still remains - can I take the T1 off of one side of the same breaker to run the battery charger? Since this is a manual, interlocked disconnect system N1 and N2 are only being used so the test mode will function (Generac says you have to have N1 and N2 connected to be able to use test mode).
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d11gnccer
Cant power N1 and N2 off of a breaker backed up by the generator. When the generator provides power to it the unit will shut down because it is sensing voltage. You need to take n1 and n2 off of a utility powered source only. This will allow the generator to start and excercise without grounding wire 23 because it sees utility voltage.

T1 needs to be pulled from a breaker that is powered at all times by either utility or generator. t1 needs power at all times.
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islandman
d11gnccer - where do you find a 240v breaker that is a utiltiy source only? Once I use my interlock and disconnect utility power everything is on the house side. I don't see how I can add a "utility side" breaker just for N1 and N2. Why would be generator shut down if its sensing voltage, I don't have automatic standby, just a interlock disconnect that I move by hand and then manually start the generator. Sorry for the additional questions.
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ceb58
islandman;8587 wrote:
SkipD - that's what I have, the breaker that I'm taking the N1 and N2 off of will be powered by the generator after I manually disconnect utility power, so I guess the question still remains - can I take the T1 off of one side of the same breaker to run the battery charger? Since this is a manual, interlocked disconnect system N1 and N2 are only being used so the test mode will function (Generac says you have to have N1 and N2 connected to be able to use test mode).


The bottom line is this. If that breaker will have power on it whether in utility or gen and the breaker is listed for two wires under one terminal. Then yes you can. It will tell you on the side of the breaker. Most will allow 2 copper conductors but only 1 alum.
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d11gnccer
islandman;8590 wrote:
d11gnccer - where do you find a 240v breaker that is a utiltiy source only? Once I use my interlock and disconnect utility power everything is on the house side. I don't see how I can add a "utility side" breaker just for N1 and N2. Why would be generator shut down if its sensing voltage, I don't have automatic standby, just a interlock disconnect that I move by hand and then manually start the generator. Sorry for the additional questions.


If you are going to switch the generator from the auto position, where it needs to be for a weekly excercise, to manual then it won't be an issue.
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