What size of wire should I use   in a 50 horsepower motor?
492458
I seriously doubt you have a 50 HP motor!  That is industrial size, and I wouldn't expect a question like that here.\n\nWhat voltage?  A 3-phase 50HP 230V motor is 130 amps!  There is no single-phase motor that big.  If you really have this, get an electrician to install it.
615599
Operating 60Hz appliances at 50Hz or viceversa may result in excessive heat buildup in transformers or in certain types of electric motors. \nIf you wish to safely operate 115V 60Hz appliances at 115V 50Hz then the following steps can be attempted: \n\nContact the manufacturer of the appliance. It may be possible to safely operate at 50Hz with the manufacturer's approval. \n\nSee if an alternate 240V 50Hz or 115V 50Hz power supply or electrical motor is available. Some manufacturers sell the same appliance or electric tool in many countries around the world and may be able to retrofit the power supply or electrical motor to 240V 50Hz. Some regions of Japan have 100V 50Hz supplies while others have 100V 60Hz supplies so it is not uncommon for Japanese manufactured electrical devices to have 50Hz solutions. \n\nIt is possible to purchase 60Hz sine wave power systems that take 240V 50Hz on input and produce 115V 60Hz on output. These solutions are generally very expensive, and it is usually more cost effective just to replace the tool or appliance. See here for a high current frequency conversion solution. \nIf these solutions, for one reason or another, do not work then there are only two further choices: dispose of the appliance or tool, or attempt to operate the appliance or tool at 50Hz and in the process potentially create a situation where the power supply or the motors in the appliance or tool are rendered non-operational.
478080
Is this for an electric motor or an engine? \n\nNEMA National Electrical Manufaturers Association) has a standard set of starters for electric motors. Try a web search, I bet you will find what you want if you are talking about an electric motor.
1029495
It is impossible to tell from the information given.  YOu need to know the power factor and efficiency too.  \n\nAt full load of a motor that big it is likely to be 95% efficiency and have power factor of probably 0.8.  \n\nIF (!!) that is true, then the current is (75 hp * 746 W/hp)/(480  V *sqrt(3))/0.95/0.8 Amps (rms)\n\nNotice I've considered a wye-connected motor too - that's where the sqrt(3) comes from.  I also get 90 A (like the previous guy)!
677244
One really needs the manufacturers part number to get that information. If the dataplate is gone, you can ohm out the windings, and through the process of elimination determine the  proper connections. You might want to check out the stepper motor seciton at CNC zone.\nhttp://www.cnczone.com/forums/forumdisplay.php?f=193
145405
if the voltage rating of your motor is 460, you can really hook up to a 480 volts electric s=poer source. the maximum your motor can hanmdle is 460 = 10% of 460 whixh is 506 volts
670662
Try Global Spec. It's free and allows you to put in your desired torque and rpm, then shows you matching products. Keep in mind they will spam the email account you register with mercilessly.
237340
low range is best with a small diameter rod, e7018 or e 7014 3/32 diameter . it will be difficult if the metal is less than 1/16 in thickness. strongly suggest mig welding.
731398
Slip Rings are most commonly used.  If the power level is low you might be able to magnetically couple the power through the shaft using a pair of concentric coils.
967084
I would use a length of nichrome wire (see links below) stretched between a couple copper blocks. You could make some sort of pinch block out of the copper and connect a power supply to the copper. (or drill a hole through it with a set screw, tap a hole and us a pan head screw)  You will have to insulate the copper from the rest of the world so you don't short something out.  G-10 (a glass/epoxy resin) makes a good moderately high temperature insulator.  One of the contacts should be fixed and the other allowed to "float" and allow for changes in the length of the wire due to heating.  A spring could be used to provide tension or an air cylinder.  The power supply will depend on the length and diameter wire you choose.  If there is a problem with the electrical contacts heating up, you could run some cooling water through them.  Just drill a hole through it and 1/8 NPT pipe tape both ends.  You can plumb some water to it and it will keep the copper chilled.
185993
About 450?  Do you mean 4500?  Go to Perma-cool's web site and they have a graph that tells you what cfm for the size of your engine.  I have a mustang with a 302 and it needs to be around 3000cfm.  I would imagine a 360 would need more.
201694
I have a 35 hp and it's 50:1 it should say underneath on the motor somewhere, Unless it's missing. I hope this helps otherwise just call a Johnson dealer and ask them.
1141592
RJ-45\n\ndon't foget, the 2 wire pairs need to be hooked up in a unique way. Pin 1 & 2 / 3 & 6 need to matched. The others really don't matter.
142352
different socket sizes
595330
If you are in the US, there is a building codebook that has tables for all wire sizes and their ratings.  Its called the NEC handbook
69363
pretty much any metal could be used as a fusible link.  most fuses are just copper or some other regular conductor, but they are a single strand of very thin wire.  the thinness means it can only carry so much current before heating up and melting.\n\nso just use regular wire but step down a few gauge sizes as needed to limit the current.\n\nthis is kind of dangerous though, coz you could burn someone and start a fire, not to mention it's a pain in the rectum to replace a piece of melted-on wire.\n\nyou're most definitely better off just getting some of these fuses and fuse holders for like $5:\nhttp://www.crowbarelectricalparts.com/Fuses_and_Fuseholders.htm\n\nthat way the blowing fuse is contained in a plastic shell, you can get replacement fuses for dirt cheap at any car parts store, and you know exactly what current they are supposed to blow at.\n\ncheers!
2627
I could suggest several considerations.  First P=IE, that is Power equals the electrical current (I in Amperes) times the voltage (E in volts).  Current is like the flow of water in a pipe and voltage is like the pressure causing the water to flow.  If you use the water to drive a hydraulic piston (say to hoist an automobile for repair) you can use either a small piston and high pressure or a larger piston and lower pressure.  Which is more cost effective?\n\nIn the United States, electric power is delivered to neighborhoods using three wires (three phases) strung along telephone (power) poles.  Only two of the wires are led to a single residence but the neighborhood must use all three wires to balance load on the wires.  Within a house electricity passes from only one wire (phase) to ground or earth to light a lightbulb which uses 110 volts.  The clothes dryer that needs far more power is connected between two of the supply wires (two phase) and to ground to supply 220 volts.  A machine shop might connect a very large motor to all three supply wires to obtain even more power at 440 volts.\n\nSix volts or even 12 volts DC in an automobile circuit can be touched with little danger.  It is less dangerous to accidentally touch a 110 volt AC wire than a 220 volt source and 440 volts is most dangerous.\n\nTherefore, the selection of voltage depends in part on safety and then on the size of the job to be tackled and also economic factors.  The higher the required current, the larger the required wires using expensive copper.  Increasing the voltage reduces the needed current and reduces the needed copper to do a given job.  The higher the required voltage, the more expensive the required electrical insulation will be.  Engineers must determine the best trade off of many factors.