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Answer for USA, Canada and countries running a 60 Hz supply service.
Motors are a complicated part of the NEC. I will give you general rules but what type of motor you have, what it's "duty rating" is, how it is going to be used, etc. etc., can make huge differences in the answer to your question.
Assuming your 20 amp breaker is either 2 poles or 3 poles, the code allows a motor up to 10hp to operate on that breaker.
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As always, if you are in doubt about what to do, the best advice anyone should give you is to call a licensed electrician to advise what work is needed.
Before you do any work yourself,
on electrical circuits, equipment or appliances,
always use a test meter to ensure the circuit is, in fact, de-energized.
IF YOU ARE NOT ALREADY SURE YOU CAN DO THIS JOB
SAFELY AND COMPETENTLY
REFER THIS WORK TO QUALIFIED PROFESSIONALS.
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How many amp circuit breaker for 3 hp 230 volt motor?
16A
What size breaker is used for a 220 volt for a stove?
50 amp with AWG # 6 wire is normal. Read the instructions that came with the stove to make sure.
How many amps is a 3 hp 240 volt motor use?
AWG #10 copper on a 30 amp breaker.
How do you add a 240 volt receptacle to 100 amp supply?
The 240 volt receptacle has to have an amperage rating. It is this rating that governs the wire size and breaker size to feed the circuit. The new two pole breaker will be inserted in the 100 amp distribution if space is available and connected to the new wiring that terminates at the new receptacle.
How do you wire a 277 to 120 volt transformer?
The voltage 277 volts is a three phase line to neutral voltage of a 480 volt system. What is needed for the protection of the transformer is a two pole breaker from the 480 volt CDP (Central Distribution Panel). The breaker will be sized to the KVA of the transformer. The wire will be sized to the breaker plus 25%. The electrical code requires that on motor and transformer feeders, they be sized to 125% of the total current capacity of the equipment.
What is breaker size for 240 volt 9 KW?
The formula you are looking for is I = W/E.
What size breaker should be used for 1500 watt bathroom exhaust fan heater?
20 amp breaker 12 gauge wire assuming its 120 volt
What size breaker for a 208 volt single phase motor that pulls 1.4 amps?
208 volts is not a common single phase voltage but you could just size your breaker to the capabilities of the conductor. 208 is normally a phase to phase voltage <<>> Many 230 volt motors can be connected to lower voltage supplies. These motors can be connected to supplies of 208 and 200 volts. The code requirement is that the 230 volt full load amperage of the motor be increased by 10% and 15% respectively for wire sizing and breaker selection. To answer the question you will need a two pole 15 amp breaker.
How many amp circuit breaker for 3 hp 230 volt motor?
16A
How big of breaker do you use for 115 volt?
Depends on the wire size used in the circuit. If you use AWG # 14 wire you must use a 15 amp breaker. If it is wired with AWG # 12 wire then you use a 20 amp breaker. If a AWG # 10 wire is used then a 30 amp breaker is required. The breaker protects the wiring from overheating so you must use the proper size breaker for the wire used.
What size breaker for a 1500 watt 120 volt heater?
15 amp
Can i wire a 7.2 volt motor up to a 18 volt battery will it just burn the motor out?
you can but if you do, you will/might: A) kill the motor,B)overload your 18 volt power supply, and C) maybe short a breaker if your power supply is also an ac to dc converter
What is the breaker size for a 10 KVA electric heater?
What size breakers are needed for a 30kva transformer 208 volt feed 600 volt out put
What size breaker is used for a 220 volt for a stove?
50 amp with AWG # 6 wire is normal. Read the instructions that came with the stove to make sure.
How many amps is a 3 hp 240 volt motor use?
AWG #10 copper on a 30 amp breaker.
You are putting in a 240 volt 4000 watt heater in a room what size breaker do you need?
20 amp
What size breaker for a 12 Volt 50 watt light?
50W@12V is 4.2 amps, so any breaker rated that or higher should work.
