how do you add a switch to an industrial blower?
826999
NO and NC switches refer to a switch that is spring loaded and returns itself to a state that is called normal. Normally closed state contacts of a relay are the ones that are closed with no voltage applied to the coil. \n\nIf you put a NO switch in line with the coil as you suggest it will not run unless you are there to hold the switch in its ON state.  \n\nIf you put a NC switch in, the pump will run as normal and stop when you hold the switch in its OFF state. \n\nYou may need a simple toggle switch that will remain in the position you last left it. In any case select a switch of the proper current and voltage rating.
914136
My guess is that they are nothing more than an injection molded fan (Thermoelastomer blades with a rigid plastic overmold) pressed on to the end of a small DC motor.  If it is coming from China, don't expect great quality.  Chances are it is only designed to work a few times.  The switch contacts are probably bits of brass that touch eachother when you push the button.
585671
Feign a power cut. Switch the breaker, come on you know you want to
175418
hah yeah i've done that. depending on the length of the  switch thingy, it might get tangled and break, or something.
823421
light duty is the problem - would be very easy to make one using any push on connector in the circuit ( you need a spring loaded connector with the pin being non conductive - a 'blade' shaped pin would be the easiest to rig )\n\nanother possibility is to use a switch of any type ( a - b ) that shunts the circuit to a open   circuit  ( this can be activated by a pull - and switched back manually )
115772
Yes, a double-pole switch opens and closes two wires of the same circuit, or two independent circuits.  I believe electro-fogey was thinking of double-throw switches.
653144
There might be a switch in the back. Put it on normal.
568250
Where are you going to plug in your DC heater?
697985
Hi. You will need two circuits connected through a relay. The horn draws too much amperage to be fed directly through a switch. A momentary contact switch feeds the relay, which closes and feeds the horn. Add your power source and the horn and your golden.
229122
just snap it into the breaker box\nthats the only think i know.
833888
For your pulleys you need to turn the grinder by hand at the rate you want and count how many revolutions you turn in one minute then divide 3450 by this number to give you the turn down ratio (the ratio between the sizes of the 2 pulleys).\n\nThe mounting is going to be best determined by the mounting of the motor you have. Use the cheapest, easiest, that is strong enough to do the job.\n\nNot sure about the motor wires, maybe the motor is dual speed, hence the yellow wire but it could be a start winding or wire that should be connected to a capacitor. You will need to get advise from someone that can look at it or be extremely careful in tests. Unless you know the motor is good, there is no point proceeding.\n\nEither way it seems like alot of work, have you considered looking on EBay for an electric grinder?
495336
Turn off all power to the machine, throw the breaker switch\nand put a lock on the breaker so that noone can unlock it and throw the switch on and electricute you. put a tag on the switch with your name and the machine you are working on and time. To unlock it....finish yourwork, go to tag, take tag off un lock lock and turn breaker back on.
800088
any good diy book will do or perhaps links on the internet.\n\nin the uk its all about getting a phase neutral and earth around each point.\nso for the sockets grab a reel of 2.5mm 2core and earth (so called because the earth doesnt have an extra layer of insultation) and take it round to each socket in a ring. usually fuse at 32A with a circuit breaker.\nfor an immersion heater fuse at 16A and take a single 2.5mm 2c and earth cable.\n\n(This starts getting a bit boring, go and buy a book)
1059639
look in switchboard.com
366698
One word of caution! The generators must be in phase for you to connect them in series and that will be nearly impossible to find in a small, commercial generator.  Without very tight control over each generators sync with the other, you could end up with anything from approx. double one generators voltage to the voltage of one generator alone and most likely fluctuating in between.  This will reek havoc on many things you may want to run with it and destroy lots of others outright. It could be done with the right electronics, engine and generator modifications and know how, but it would also be very expensive and time consuming.  If you need a 480V genny, it's much easier to find a used industrial engine welder or scavange one for its transformer.
332212
Change cam shafts, Put a blower on it, Turbo charge it.\nFree flow exhaust system.
167412
My suggestion would be to use a d.c. motor .  Incorporate the following : A D.C. motor, 2 momentary contact up/down switch, a reversing relay that would switch positive and negative when switching from up to down . Associated micro switches and ice cube relays to sense position and stop motor when destination is reached. Some form of safety clutch,light curtain etc. And a rectifier to convert house hold alternating current to D.C. . An alternative would be a reversing A.C. motor and associated similar controls less rectifier. Similar installation difficulty , my decision a/c vs d/c would be based on price and availability.