gijsen
As previous post notes, I will soon be installing a 5875. I would like to have everything in place for its arrival. I cannot find it in any of the online info, so does anyone know how many control wires this unit has? I would like to run these through the basement ahead of time, if you have color codes all the better! I plan on running 14 awg which should be good for 80 feet. Thanks!
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bucdup
Five - N1, N2, T1, 23, 194. Run 5 five different colors and you are good!
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Skip Douglas SkipD
I suggest adding three wires to the run for a possible installation of a receptacle in the generator (hot, neutral, ground). This could be used for a battery blanket, an aftermarket battery charger, or electrical tools.

Make sure that all the wires are THHN.
Skip Douglas
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bucdup
SkipD;10831 wrote:
...an aftermarket battery charger...
Hehe... :D
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genme
I ran the zero wire as well (for a total of 6 control wires.) Not sure why Generac says this is not required for pre-wired switches. Even if you don't plan to connect it, I'd run the wire for it just in case (so you don't have to pull another wire later.) The Generac manual I downloaded says:

"11. Connect the control wires to the correct terminals. The terminals are clearly marked N1 and N2 for utility sensing; 23 and 194 for transfer relay control; and T1 and 0 for battery charge. On pre-wired switches, the 0 (zero) wire will not be present/required."
Model 5875, Nexus controller, 999cc Engine, 20kW LP, 2011
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bucdup
genme;10834 wrote:
I ran the zero wire as well (for a total of 6 control wires.) Not sure why Generac says this is not required for pre-wired switches. Even if you don't plan to connect it, I'd run the wire for it just in case (so you don't have to pull another wire later.) The Generac manual I downloaded says:

"11. Connect the control wires to the correct terminals. The terminals are clearly marked N1 and N2 for utility sensing; 23 and 194 for transfer relay control; and T1 and 0 for battery charge. On pre-wired switches, the 0 (zero) wire will not be present/required."


On the new models the battery charger is integrated in the control panel. But it never hurts to have a few extra wires!
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genme
bucdup;10835 wrote:
On the new models the battery charger is integrated in the control panel. But it never hurts to have a few extra wires!
The quote is from the 5875 nexus manual (I just installed ours.) I agree on the extra wires.
Model 5875, Nexus controller, 999cc Engine, 20kW LP, 2011
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gijsen
Thanks again! I will certainly run extra wire! I always do, I have had to add conductors both in factories and in aircraft, what a PITA, so I will add for the battery blanket and a couple extra.

Thanks again!
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Skip Douglas SkipD
gijsen;10847 wrote:
Thanks again! I will certainly run extra wire! I always do, I have had to add conductors both in factories and in aircraft, what a PITA, so I will add for the battery blanket and a couple extra.

Thanks again!
Just remember that an equipment ground wire must be green and if you run a separate neutral for a receptacle it must be white. Those colors cannot be used for anything else. I suspect you know this, but my comment is for any newbies reading this. ;)
Skip Douglas
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ohmslaw
Generac uses the 0 wire for the load shed controller. The load centers do not need this although I am going to add one to a 10 KW and see how well it works.
Tim
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HKFever
ohmslaw;10854 wrote:
Generac uses the 0 wire for the load shed controller. The load centers do not need this although I am going to add one to a 10 KW and see how well it works.
Tim


Does the load shed controller shed loads automatically if the genset approaches full load condition? This might be a great way to have my water heater hooked up.
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genme
HKFever;10856 wrote:
Does the load shed controller shed loads automatically if the genset approaches full load condition? This might be a great way to have my water heater hooked up.
Per the 5875 manual: "Generator overload condition is determined by generator frequency. Loads are shed when the frequency is <58Hz for 3 seconds or <50Hz for ½ Second (For 60Hz)."

Normally, all the lights on the load shed module are lit. It's cool to see them all go out during an overload and sequence on again in an attempt to restore as many loads (up to 2 AC's and up to 4 other loads with DLM modules) as possible without overloading. We're going to put our water heater on it.
Model 5875, Nexus controller, 999cc Engine, 20kW LP, 2011
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HKFever
genme;10857 wrote:
Per the 5875 manual: "Generator overload condition is determined by generator frequency. Loads are shed when the frequency is <58Hz for 3 seconds or <50Hz for ½ Second (For 60Hz)."

Normally, all the lights on the load shed module are lit. It's cool to see them all go out during an overload and sequence on again in an attempt to restore as many loads (up to 2 AC's and up to 4 other loads with DLM modules) as possible without overloading. We're going to put our water heater on it.


That sounds like just what I need to compliment my install. Where is the best place to purchase one?
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genme
[url]http://www.zillerelectric.com/5937-Generac-Load-Management-Module/dp/B004HL5S0U[/url]
Model 5875, Nexus controller, 999cc Engine, 20kW LP, 2011
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HKFever
genme;10864 wrote:
[url]http://www.zillerelectric.com/5937-Generac-Load-Management-Module/dp/B004HL5S0U[/url]

Thanks.
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