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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.
Wiki User
∙ 14y ago
Wiki User
∙ 15y agoThe switch needs to be double pole and rated the current of the load and for 240 V.
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What size breaker is needed for a 240 volt 34 amp hot tub?
Add 25% so it comes to 42 amps
Room with electric baseboard heaters that add up to 4500 watts which is to much for one 20amp 240 circuit. Can I use a low voltage thermostat with a relay rated for 24 amps on this circuit to fix this?
A low voltage relay will not solve the problem. Even through the relay the current will still be over what the code states is legal for the circuit. The legal wattage applied to a 20 amp circuit is 20 x 240 = 4800. The circuit on electric heat can only be loaded to 80% of the ampacity of the conductor. 4800 x .8 = 3840. However you want to distribute the baseboard heaters, there should not be any more than 3840 watts on the 20 amp 240 volt circuit. If you want to rewire and use #10 wire that is rated at 30 amps then the connected wattage allowed would be 30 x 240 = 7200 x .8 = 5760. A 30 amp circuit is the maximum size that can be used for surface baseboard heating in a single family residence.
Why does a wall switch 'crackle' and the light flicker?
There is a high current draw on the circuit and the switch is getting old. Change out the switch, see if you can find a 20 amp switch as the internal contacts are designed to take the higher amperage. Check how many lamps are in the circuit in watts, add them together and use the formula for amps. Amps = Watts/Volts (120).
What is the problem when you add 2 additional outlets to an existing circuit and they show 60 volts no breaker trips?
Answer for USA, Canada and countries running a 60 Hertz supply service.First understand, a circuit breaker doesn't trip on low (60) voltage. It trips on overcurrent, or too many amps being drawn by the circuit.A 60 volt reading in a 120 volt circuit is a typical "backfeeding" reading. You have something miswired. You may have tied into another circuit on the same phase. Go back and disconnect the feed to your 2 additional outlets. Check voltage on the last outlet on the original circuit. If you've got 120 volt, turn the circuit off, then wire in the first new outlet. Do not tie into any other wires other than the wire you ran from the last outlet in the original circuit. Turn the circuit back on and check voltage. You should have 110-120 volt. Then add the second additional outlet as per the above. Do not tie the neutral into any other wire than the one from the original circuit. This should clear your low voltage problem.
What size double dimmer switch do you need for 6 x 40 watt halogen bulbs?
Just add the powers so the total power is 240 watts.
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.
What could you add to the circuit to control the bulb?
Switch
How do you add a switch to a series circuit?
usually in series
If R1 equals 2 and R2 equals 4 in a 12 volt series circuit what is the total circuit resistance?
Series circuit? Add 'em!
What size breaker is needed for a 240 volt 34 amp hot tub?
Add 25% so it comes to 42 amps
If a single phase 240 Volt ac is applied to a full wave bridge rectifier. what will be the resultant dc voltage?
A: the rms value will be169 volts add a capacitor and no load 240 volts and the average will be 153 volts
Room with electric baseboard heaters that add up to 4500 watts which is to much for one 20amp 240 circuit. Can I use a low voltage thermostat with a relay rated for 24 amps on this circuit to fix this?
A low voltage relay will not solve the problem. Even through the relay the current will still be over what the code states is legal for the circuit. The legal wattage applied to a 20 amp circuit is 20 x 240 = 4800. The circuit on electric heat can only be loaded to 80% of the ampacity of the conductor. 4800 x .8 = 3840. However you want to distribute the baseboard heaters, there should not be any more than 3840 watts on the 20 amp 240 volt circuit. If you want to rewire and use #10 wire that is rated at 30 amps then the connected wattage allowed would be 30 x 240 = 7200 x .8 = 5760. A 30 amp circuit is the maximum size that can be used for surface baseboard heating in a single family residence.
Add 40 percent to 240?
240 + 40% = 336
How do you add 240v service for electric oven to replace a gas oven?
An electric oven must be on a dedicated circuit. Unless you already have a 220 Volt circuit available, you will have to run a wire from the fuse panel to the stove. Call a licensed electrician.
Why does a wall switch 'crackle' and the light flicker?
There is a high current draw on the circuit and the switch is getting old. Change out the switch, see if you can find a 20 amp switch as the internal contacts are designed to take the higher amperage. Check how many lamps are in the circuit in watts, add them together and use the formula for amps. Amps = Watts/Volts (120).
How does a two way connection with intermediate transfer electric current?
On a 3 way circuit both switches must be in the same position for the circuit to be complete and the lights to work. When you add a 4/way or intermediate switch to the middle of the circuit the 4/way switch has 2 positions. One position closes the circuit and the other position opens the circuit. In other words the current is passing through or it is not.
What is the problem when you add 2 additional outlets to an existing circuit and they show 60 volts no breaker trips?
Answer for USA, Canada and countries running a 60 Hertz supply service.First understand, a circuit breaker doesn't trip on low (60) voltage. It trips on overcurrent, or too many amps being drawn by the circuit.A 60 volt reading in a 120 volt circuit is a typical "backfeeding" reading. You have something miswired. You may have tied into another circuit on the same phase. Go back and disconnect the feed to your 2 additional outlets. Check voltage on the last outlet on the original circuit. If you've got 120 volt, turn the circuit off, then wire in the first new outlet. Do not tie into any other wires other than the wire you ran from the last outlet in the original circuit. Turn the circuit back on and check voltage. You should have 110-120 volt. Then add the second additional outlet as per the above. Do not tie the neutral into any other wire than the one from the original circuit. This should clear your low voltage problem.
