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250 MCM aluminum minimum

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Q: What size aluminum wire for a 220v 200a service in conduit undrreground at 180 ft?
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What size wire do you need going from a 20KW 83A generator to the main 200A automatic transfer switch?

In conduit? direct burial? distance?


What is the minimum size alluminum ground for a 200A service?

250 mcm


Considering 100A 240V service has 2 poles at 100A each is the total usable power actually 200A at 120V?

No, amperage is not additive, but a constant. Think of power as water, its always the same temperature, hot (amps). The pressure is variable (volts). The true answer is undoubtedly more complex, but you get the point. If you need to draw 200 amps you would actually need a 400 amp service because code states you cannot have more than an 80% load on a breaker That's an interesting question and I had to run the theory through my brain a few times to confirm my answer. The answer is if you have a 100A 240V service, you could draw what appears to be 200A from that panel at 120V. If you install 100A 120V single pole breakers on each side of the panel (in reality this would be many breakers but let's keep it simple) then both breakers will operate just fine, giving the appearance of 200A. In reality, however, one breaker actually feeds through to the other breaker. The neutral only carries the unbalanced load so in this hypothetical situation the neutral at the panel carries 0A. So the answer to the question is...if you install ONLY 120v single pole breakers, you can run up to 200A on those circuits (or 80% of that as we have discussed.) But you are only running 100A on each leg of the service conductors and breaker.


What should you do if your 200A breaker panel is full and you need to add three forty amp two pole singal throw breakers?

First you need to determine if addition of the new breakers will exceed the 200A service under normal operating conditions. If so you will need to go to power company and increase service and put in a larger main panel. If you have the capacity for the extra current you can add a sub-panel and add the breakers there as well as the breakers you will remove from main panel to accommodate the sub-panel breaker. Another way depends on what breakers are in current panel. There are some breakers that can be duplexed in the same space as a single breaker.


Cable size for 100kw 3phase with 175meter length?

2.5 mm twin and earth should do the trick. A 100 kw @ 400 V, 50 Hz,3 Phase at a power factor approximately 0.8 will draw a current ( 100x1000/root 3x400x0.8 )=180.42 A. Breaker rating to be 200A TP MCCB and cable size to be minimum 4 Core 120 mm2 .

Related questions

What size pipe and size aluminum wire are required for a 100A sub panel off a 200A main service?

A #1 aluminum wire with a insulation factor of 90 degrees C is rated at 105 amps. Three #1 wires can be installed into an 1 1/2" conduit.


What gauge electrical wire is required to upgrade your electircal service to 200A if your incoming service is underground?

4/0 Aluminum or 2/0 Copper type USE.


What gauge of cooper service wire for 200A service to meter box and service panel?

bed


What size wire do you need going from a 20KW 83A generator to the main 200A automatic transfer switch?

In conduit? direct burial? distance?


What is the minimum size alluminum ground for a 200A service?

250 mcm


Can you run a service line from your existing 200A service 150 feet to a 40A service in your barn?

As long as you do it according to local code, there's no electrical problem with it.


Can a 200A 240V house panel be fed by number 2 conductors from a service entrance meter panel with 200A main breaker?

Absolutely not. #2awg conductors are only good for about 100 amps depending on Cu or al. see nec table 310-16.


What is the estimated cost of upgrading from 60A panel and replaced with a new 200A service?

Doing it yourself or hiring an electrician? Yourself: About $300. An Electrician: About $2000


What size R90 copper conductor should be used for a 200A service?

A 3/0 copper conductor with an insulation factor of 90 degrees C is rated at 225 amps.


What is maximum continues current rating of motor?

200A


200a composite number or a prime?

200 is composite.


Can you add 100 amps to 200 amp ratred box?

No, if the UL Rated Listing for the Panel is 200A than that's it. You cannot have 300A flowing through a 200A Panel.