Hi Mike,
Hey, great video. This is very cool! I might be interested in making this up from scratch. I think It would be a very interesting learning project, particularily if you can stand some possible rudimentary questions from an inept, electrically challenged old guy.
Couple of questions about your video:
What is the best way to secure all the components in a case? For example, I didn't notice any mounting brackets on the capacitor.
Also Is each component tied into ground? If not, what parts should be grounded?
What size wiring did you use for the connections?
What would be a proper mounting board/frame?
What about overload protection and a circuit breaker?
I need to confirm motor size - I think it is either 3/4 hp or 1 hp. Same size components for this size motor, as themparts you used ?
Iam thinking this assembly would ideally be mounted in the U shaped column that the grinder is bolted to. Off/on buttons around front somehow. Mine is a floor mounted column with grinder motor at about waist height - 8" X1" grinding wheels.
We have a local old school electrical supply shop near by that likely has all the parts in your video in stock.
Thanks
Glenn
Hi Glenn,
thank you for your kind words.
as far as securing components in an enclosure, you can use DIN rails for attachment or you can use bolts, aircraft nuts, and washers.
for attachment of the capacitor, zip ties work wonders. ( commercial cap brackets are available if you want them)
for this operation, you'll ground the motor to the input ground- no other component grounding is necessary
for the control wiring for the switches and capacitor, i used 18 gauge stranded wire
you could use heavier wire if you choose.
For the motor wiring, you may wish to use 14 gauge or 12 gauge if you are going to pull more than 20 amps
you can get enclosures from the big box stores for less than $20, that will suffice
overload protection can be accomplished by 4 fuses and 4 fusseholders (2- 1a control fuses and 2- 10 amp system input fuses)
or
you can use a 10-12 amp overload relay and 2 control fuses of 1a capacity
you can get away with a smaller contactor, because the load is small.
we can even add a balancing capacitor to gain back some lost HP
if you have other questions, i'm happy to assist in any way i can