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Yes the voltage rating of devices is the maximum amount of voltage that it can handle. You could not use a 480 volt breaker on a 600 volt service and like wise you could not use a 208 volt rated breaker on a 480 volt service.

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15y ago
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5mo ago

No, you cannot use a 480V breaker with a 208V system. Breakers are designed to protect specific voltage systems, and using the wrong voltage breaker can result in damage to your equipment and pose safety risks. Always use breakers rated for the specific voltage of your electrical system.

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11y ago

No. It will probably arc over when it pops, this could weld it shorted.

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13y ago

you get a fire

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Q: Can you use 480v breaker with 208v?
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Related questions

Can you feed a 208v 200amp panel from 480v 20amp circuit?

Not directly, you would need to transform 480v circuit to 120v with a transformer first.


What is the kw input on a 50amp breaker with a 208v three phase electrical feed?

7200


What size main breaker feeding 480v 75 kva transformer?

An exact breaker size can not be given because the voltage, and hence the calculation for current, is not given. A transformer shall be protected by an over current device that is not rated at more that 150% of the primary current.


What is low voltage transmission?

In the supply industry it refers to circuits of below 1000 volts. Common voltages used are 120v, 208v, 230v, 240v, 277v, 400v, 415v, 480v.


Is there any advantage of 208V vs 480V three phase?

208 v. equipment is a little smaller and cheaper, and 208v. is slightly safer to use. However, 480v. runs on half the amperage 208v. equipment does, which means equipment or devices cost almost 50% less to operate. With respect to energy consumption, the answer above is incorrect. It is true that equipment that operates at 480v does operate at roughly half the amperage vs. 208v, however, it operates at over twice the voltage. Your local power company charges you per kilowatt hour (voltage x amperage), not on amperage alone. Example, a 208v motor that draws 10 amps would consume (208v x 10a) 2.080 kilowatts per hour. The same motor on 480v would draw roughly half, 4.3 amps (480v x 4.3a) and would also consume 2.080 kilowatts per hour. So in terms of power consumption, they are virtually the same. The main reasons one would opt for higher is the fact that you can install smaller wire and you can run longer distances. It's a ratio that is directly proportional (at least with electric motors/inductive loads). If you were comparing a 240v motor to a 480v motor the ratio would be exact, if a 480v motor draws 5 amps, the same motor on 240v would draw 10 amps.


What rating is called for in a non fussed disconnect switch between a Automatic Transfer Switch with a 400amp breaker 120 208v system and a generator that outputs 120 208v 3ph capacity 100KW 125KVA?

400 amps


Are 120V and 208V the same?

no 208v is bigger


Can you connect a 240V ballast to 208V line service?

It is not recommended to connect a 240V ballast to a 208V line service as this can potentially damage the ballast and create a safety hazard. It is best to use a ballast that is specifically designed for use with a 208V line service to ensure safe and proper operation.


Can a 600V rated cable be use in 480V 3 Phase Ckt?

yes,


Which is easier to use a fuse or a breaker switch?

A breaker switch is easier to use.


What breaker do you use for 10 2 wire?

Use a 30 amp breaker.


How many output amps is a 75 kva 208v-480v?

1kw=1.25kvaby this relation 75kva=60kwp=1.732*380*I*1I=60000/1.732*380*1I=91AmpsCommentPower factor is irrelevant to this question. You don't need to convert the kV.A rating to kilowatts, simply divide 75 000 V.A by (1.732 x 380). The answer is 114 A.This, of course, assumes that the question refers to a three-phase generator and that 380 V is the line voltage.