Two conveyors, one conveys materials to the other, both 110v single phase fractional HP motors... 11 amps total... would like to plug one into a receptacle on a 20 amp fuse, run the circuit along the conveyor to a switch on the other end, which would switch both conveyors on and off, and plug the second conveyor into the discharge end of the first.
Neither motor is thermally or impedance protected. The conveyors are just placed there and are not permanently installed, ( I'm not sure what constitutes being permanently installed ) but are too big to be carried around, and although they get moved around somewhat, stay in the same place most of the time.
Do they need any overload protection?
Do they have to have overload protection on each motor?
It seems to me that having a manual starter with OL large enough for the combined load of both motors would be better than nothing.
If I put overload protection for the second cord connected motor ahead of the plug, can I use a regular 110v 15 a. straight blade receptacle and plug to hook it up, or should I use some other configuration to make it less compatible with other common plug in equipment?
The thing I would feel the best about is to put a manual starter and overloads on each motor, but it will make more of a conglomeration on the conveyors, a little harder to start/stop both conveyors at once, and none of the previous ones are like that. If I put a magnetic starter on them, I will still have to run some plug in conductors ,between the two.
The reason this all seems to be troubling to me is that it is an insignificant little application, and I don't want to make a mountain out of a mole hill, but I do like to try to do things correctly if I can. I was looking in the 2005 NEC today, and I can't decide what is correct.
thanks
Neither motor is thermally or impedance protected. The conveyors are just placed there and are not permanently installed, ( I'm not sure what constitutes being permanently installed ) but are too big to be carried around, and although they get moved around somewhat, stay in the same place most of the time.
Do they need any overload protection?
Do they have to have overload protection on each motor?
It seems to me that having a manual starter with OL large enough for the combined load of both motors would be better than nothing.
If I put overload protection for the second cord connected motor ahead of the plug, can I use a regular 110v 15 a. straight blade receptacle and plug to hook it up, or should I use some other configuration to make it less compatible with other common plug in equipment?
The thing I would feel the best about is to put a manual starter and overloads on each motor, but it will make more of a conglomeration on the conveyors, a little harder to start/stop both conveyors at once, and none of the previous ones are like that. If I put a magnetic starter on them, I will still have to run some plug in conductors ,between the two.
The reason this all seems to be troubling to me is that it is an insignificant little application, and I don't want to make a mountain out of a mole hill, but I do like to try to do things correctly if I can. I was looking in the 2005 NEC today, and I can't decide what is correct.
thanks