What Is A 50 Amp Breaker Used For

Installing a double pole 50 amp breaker is normally a job for an electrician but a competent homeowner can do it.

8 thwn can be used. But that same 6 000 watt flugelhorn on a 240 volt circuit requires only a 25 amp circuit 6 000 divided by 240 25 and a smaller wire and circuit breaker. 6 copper wire can support up to 55 amp at a temperature of 60 degree celsius. A 12 gauge copper wire can be used if its ambient temperature rating is either 75 or 167 or 90 or 194 while a 12 gauge aluminum wire is compatible if its ambient temperature rating is 90 or 194.

It s best if a bigger size wire is used. Wire lenght is an important criteria second to the amperage. Thhn uses the 75 deg c column in figuring ampacity in newer work. 6 wire is strongly recommended.

What has to be kept in mind though is that the circuits ampacity will be reduced to 40 amps. Steve purchased our 6 awg thhn thwn copper building wire for his project. I have the stuff to backfeed my generator through a 30amp breaker. The breaker in the panel is a 50 amp.

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My generator is strong enough to run a 50 amp and a 30 amp cord at the same time. I told the client that it was ok because of the inductive load and the wire is the 8 in conduit. If the panel is almost full and you have to move a breaker to make space for the double pole one don t forget to balance the load between the two hot buses for safety and efficiency. I guess this is the exception you were referring to although it is not an exception.

It is more the rule as far as conduit work goes. It used to be ok to overfuse is this still ok to do. Here is what steve had to say. Rule of thumb a 6awg wire would be ok.

Yes a 40 amp breaker can be used on a 50 amp receptacle. My question is this. Steve needed to run 50 amp service from his main panel in his home to a 100 amp breaker box shown below in his new shop. For example a 6 000 watt electric flugelhorn on a 120 volt circuit would require a 50 amp circuit 6 000 watts divided by 120 volts 50 amps.

I put in a 100a box in the new shop but am only feeding it from a 50a breaker in the main panel from the house. I have been doing research and i am getting conflicting results. But if you run your wire 1km long it will dissipate a voltage lost and you will endup with a substantial voltage decrease. Fifty amp copper wire for copper wire no.

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If you are wondering if your extra 12 gauge wire can also be used for a 25 amp breaker it is possible to do so. I have the lockout kit that prevents both the breaker and main from being on at the same time. For example 6 gauge wir. If a 41 to 50 amp load that uses a 50 amp.