Sub panel/wiring/breaker compatability


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Old 05-08-18, 01:01 PM
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Sub panel/wiring/breaker compatability

I am in USA, Niagara Falls, NY

I have what seems to be a difficult situation. Because it seems almost impossible to find any info. On what breakers are compatable with what panels.

I just had a 200 amp panel installed at my house and the old 100 amp panel was used as a sub panel so everything wouldnt have to be rewired. I am having a 200 amp panel put in my garage with 0/4 service wire (about 70 feet of wire from house panel to garage panel) and then having the ground from the panel to the ground. I was told this is the better ideal because it will save me money on the wire and the ground will be a whole lot closer. Is this correct?

The panel im planning on using a HOM2040M200PCVP. I am trying to buy the 200 amp breaker for the panel thats in the house that will run to that panel. From what i can see thier are 3 different homeline 200 amp breakers. Hom2200, Hom2200BB and Hom2200CP. Im pretty sure Hom2200 will not work in the panel but still dont know which to get. The new panel in the house that i just had put in that the breaker will go in is a HOM4080M200PQCVP

The breakers that i plan on putting in the panel in the garage are 3x HOM230GFI

If anyone can tell me which 200 breaker is needed and if the service wire and 30 amp breakers are correct it would be much appreciated.

FYI only 90amps will be used in the garage but using a 200 amp panel and wire for 2 reasons. 1.) the garage will be running those like 70 amps 24/7 at 240v so the electric lost in 70 feet of 2awg compared to 4aug is alot of $$$ and 2.) a sexond service may be ran to the garage for 200amps in the future.

Note: had to remove links to products to post since im a new member
 
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Old 05-08-18, 06:47 PM
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It is cheaper the buy the panel with the breaker than the breaker alone.

I am not sure I am fully getting the picture of your plans. Did you move the service to the garage?

Normally a property can only have one service. Also an outbuilding can only have one feeder.

Not sure where you sp think you would be losing electric with the #2.
 
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Old 05-08-18, 07:00 PM
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I am a bit confused.

#1 You say you have a new panel installed, model HOM2040M200PCVP, but you want to know what main breaker to install. According to that part number the panel comes with a main breaker so you shouldn't need one.

#2 Why would you need 3 two pole, 30 amp GFCI breakers? Are you running 3 spas?

#3 HOM2200 can NOT be used as branch breakers. You will need to use Hom2200BB or Hom2200CP depending the series of panel you have.

#4
so the electric lost in 70 feet of 2awg compared to 4aug is alot of $$$
Not true. However, with the 200 amp breakers you are looking at you would be required to run parallel conductors which are required to be a minimum size of 1/0 each conductor. That would mean 8 wires total and likely two conduits between the house and garage.
 
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Old 05-08-18, 07:17 PM
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From what I can tell you are looking for is a 200amp branch breaker.

First note that 4/0 Cu is good for 200amps but 4/0 AL is only good for 150amps. That is because this is a feeder not servicing the entire house.

From https://www.schneider-electric.us/en/faqs/FA112267/
The HOM2150, HOM2175, and HOM2200 were used as main breakers in obsolete Series 1 and Series 2 Homeline main breaker load centers and CSEDs (Combination Service Entrance Devices). The HOM2200BB and HOM2150BB are used as branch breakers suitable for use in current Series S01 or S02 Homeline load centers and certain Combination Service Entrance Devices. The HOM2150, HOM2175, and HOM2200 can NOT be used as branch breakers.
 
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Old 05-09-18, 07:18 PM
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Astuff, your info is incorrect. 2/0 copper or 4/0 Aluminum is good for 200 amps, depending on the wiring method.
 
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Old 05-09-18, 09:11 PM
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Tolyn - you've got a point about wiring methods as I am confused about what is going on. OP is talking about installing a feeder to the garage. I first assumed SER running through the house/insulation so used 60 column.

Also for OP: Since a feeder needs to be 4 wire.
 
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Old 05-10-18, 05:27 AM
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I do not think you will find a 200 amp breaker for the feeder. The bus stab limits are normally lower than that.
 
 

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