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An extension cord has an electrical resistance which reduces the voltage of the supply to the motor. If the cord is too long or too thin, the voltage drop will be excessive and the motor may be damaged through excessive current flow.
To keep the voltage-drop down, the right gauge of wire must be used in an extension, longer cords require thicker wire.
The usual maximum voltage drop allowed is 5% of the voltage, which on a 240 v supply is 12 v. Divide this by the current in amps and this gives the allowed resistance in the wire.
Find the resistance allowed per foot or metre, using the total length of wire, which is double the length of the cord, then use wire tables to find the wire thickness or gauge required for the cord.
Example: for a 15 amp circuit 300 feet long on 120 volts, the voltage drop allowed is 6 volts therefore the resistance must be 6/15 ohms or less (0.4 ohms). The wire length is 600 ft therefore the wire must have resistance of 0.0006 ohms per ft or less, or 0.66 ohms per 1000 ft, and wire tables show that the required gauge is #8.
But on a 240 v 15 amp system the allowed voltage drop and resistance would be doubled, so #11 wire could be used, and double the power would be available as well.
What else can I help you with?
Can using to many extension cord reduce the pressure on the pool pump?
Using too many extension cords can lead to a drop in voltage, causing the pool pump to work less efficiently. This reduction in voltage can reduce the pressure at which the pump operates and may lead to potential damage or overheating of the pump motor. It is best to minimize the use of extension cords and ensure that they are of adequate length and gauge for the equipment being powered.
When testing the plantar reflex in an adult extension of the toes may indicate damage to the somewhere along the reflex arc?
Extension of the toes during plantar reflex testing in an adult may indicate damage to the upper motor neurons, such as the corticospinal tract or brain injury. In a normal plantar reflex response, the toes should flex, not extend. Extension of the toes is known as the Babinski sign and is considered abnormal in adults.
How do you use an extension cord to temporarily run the filter?
It is never as good idea to run an extension cord to a high drain appliance like an electric motor. However if you must for a temporary situation.. use a good 10 or 12 gauge heavy cord and not more than like 25 feet.. DO NOT use a cheap 16 Ga cord from walmart... your pump and the cord will get VERY hot and that can be dangerous for both you and the pump
What Nerve carrying motor information causing left leg extension?
nerve carring motor informaton causing right leg flexion?
Loss of ability to perform skilled motor activities are damaged to what?
Generally neurological damages, such as nerve damage or brain damage, result in the loss of motor functions. This can be due to severe burns, electrical shock, or blunt force trauma to the head, neck, and or spine.
What would cause a motor to spin faster?
hook up two extension cords, the more cords, the more power.
Can using to many extension cord reduce the pressure on the pool pump?
Using too many extension cords can lead to a drop in voltage, causing the pool pump to work less efficiently. This reduction in voltage can reduce the pressure at which the pump operates and may lead to potential damage or overheating of the pump motor. It is best to minimize the use of extension cords and ensure that they are of adequate length and gauge for the equipment being powered.
When testing the plantar reflex in an adult extension of the toes may indicate damage to the somewhere along the reflex arc?
Extension of the toes during plantar reflex testing in an adult may indicate damage to the upper motor neurons, such as the corticospinal tract or brain injury. In a normal plantar reflex response, the toes should flex, not extend. Extension of the toes is known as the Babinski sign and is considered abnormal in adults.
How do you use an extension cord to temporarily run the filter?
It is never as good idea to run an extension cord to a high drain appliance like an electric motor. However if you must for a temporary situation.. use a good 10 or 12 gauge heavy cord and not more than like 25 feet.. DO NOT use a cheap 16 Ga cord from walmart... your pump and the cord will get VERY hot and that can be dangerous for both you and the pump
Oil change damage motor?
no
Motorcycles are extremely hard to see if they are what?
Motorcycles are extremely hard to see if they are
Why does your new shredder say no extension leads?
When a shredder, or any electrical device, says NOT to use an extension lead, or an extension cord, it is because the electrical motor in the device has specific amperage requirements that ensure its ability to run correctly and safely. The cord that comes with the device is designed to handle the proper amperage load coming from the wall socket. If you add an extension cord, you are adding a source of resistance which could affect the performance of the device, but more importantly, this extra resistance could easily melt the outer plastic and cause a fire! If you absolutely must use an extension cord, use a heavy gauge (12 to 16 gauge, the lower the number the better) designed to handle high amperages. You can find these at most any hardware store. If you're not sure what to buy, just ask the salesperson. Whatever you do, do NOT use one of those skinny brown or white extension cords. They're called lamp cords and should only be used for lightbulbs and small items.
What is motor nueron disease?
When nerve damage effects a motor nerve, you have a motor neuron disease. It is also called neuropathy. For information on nerve damage repair go to www.realfoodnutrients.com/neu/home.htm
Will snowplows damage a four wheeler engine?
Overworking the motor will cause damage. If you try to plow more snow than what your vehicle can manage, that will damage the motor. Simply having a snowplow mounted will not.
What Nerve carrying motor information causing left leg extension?
nerve carring motor informaton causing right leg flexion?
Is motor oil compatible with copper pipe?
Yes, Motor oil will not damage copper.
What has the author Theo Mulder written?
Theo Mulder has written: 'The learning of motor control following brain damage' -- subject(s): Brain Injuries, Brain damage, Chronic Brain Damage, Efferent pathways, Motor Activity, Motor Skills, Motor learning, Patients, Physiology, Rehabilitation, Sensory stimulation
