2 (20kw Generators ) to feed 2 (200amp) panels?

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JLCELEC

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Hi Guy's here is my question. Customer has 2 (200 amp) main breaker disconnects in garage which feed 2 200 amp main lug panels on opposite sides of the house. Instead of buying a larger liquid cooled generator , the want me to install (2) 20KW generators to feed each 200 amp main breaker disconnect. im guessing it would work the same as if we installed 1 generator to back up a 200 amp residential service. Is there anything im missing or not thinking about? I have done many generators to date, but never like this. Grounding and bonding shouldnt be an issue since its all done at the mdp. If anyone has done this before and has any recommendations or feels this cant be done please let me know. I thank you for youre help in advance.
 
I guess if you use 2 transfer switches it will work however what is the load on the panels. 20000/240 = 83 amps
 
Thanks Dennis i was thinking it would work , but i was scared i was missing something. I will put DLM modules on all heavy loads including wall oven, sauna/steam room, ECT...
I will use DLM modules to drop out additional A/C units as well. Therefore the load is basically lighting, outlets , sump pumps, refrigerators ECT.
 
JLCELEC said:
Hi Guy's here is my question. Customer has 2 (200 amp) main breaker disconnects in garage which feed 2 200 amp main lug panels on opposite sides of the house. Instead of buying a larger liquid cooled generator , the want me to install (2) 20KW generators to feed each 200 amp main breaker disconnect. im guessing it would work the same as if we installed 1 generator to back up a 200 amp residential service. Is there anything im missing or not thinking about? I have done many generators to date, but never like this. Grounding and bonding shouldnt be an issue since its all done at the mdp. If anyone has done this before and has any recommendations or feels this cant be done please let me know. I thank you for youre help in advance.
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Is there a single main service disconnect before the panels?
If no, both ATS will need to be service entrance rated.
Install 200A SE rated ATS before each panel with load shed modules.

Just a note, 2 20KW gensets will most likely cost more to purchase, more to install, more to operate and more to maintain than a single 40KW unit.
 
eHunter said:
Just a note, 2 20KW gensets will most likely cost more to purchase, more to install, more to operate and more to maintain than a single 40KW unit.
Click to expand...

And, with the flexibility of the DLMs, you should not have to make it 20x2=40 but some diversity factor would come into play and make it something like a single 30kw unit.
 
Similar Job

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I've got a similar application. Two 200A disconnects near garage feeding two separate panels. 1st panel is from the original house and second is from an addition. I'm going to use one transfer switch and a 20 kw generator. Luckily for me, the house is heated and they cook with gas. Largest load will be the A/C.
 
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