loggerhogger
Stainless
- Joined
- Aug 12, 2005
- Location
- Tacoma Washington
Ok. Here is one for you electrical wizards.
I have a set of plans for building a R.P.C. which shows two capacitors. One for starting and one for running. the values that are given in the plans are a little confusing. I am going to be using a 5 hp motor for the R.P.C, and will be pulling a 3 hp load for my mill.
the plans show that both capacitors need to be 240V. However, In the McMaster-Carr online catalog, I can only find motor run capacitors in either 370 VAC. or 440 VAC.
the plans also show only one run cap, and show it wired from the 240V hot lead to the cap, and then back to the generating lead of the three phase R.P.C. motor.
In some of the posts I have read, some have used multiple caps to balance the voltage. In my limited knowledge, it seems like a good idea to me. My question is what size caps do I need for both starting, and running, and what is the best way to wire them in so that I don't end up letting the smoke out. i would like to have it so that the three phase R.P.C. motor will start on its own. If need be, I can put in a kicker motor for starting, but would like to keep it simple, (so to speak).
I have a set of plans for building a R.P.C. which shows two capacitors. One for starting and one for running. the values that are given in the plans are a little confusing. I am going to be using a 5 hp motor for the R.P.C, and will be pulling a 3 hp load for my mill.
the plans show that both capacitors need to be 240V. However, In the McMaster-Carr online catalog, I can only find motor run capacitors in either 370 VAC. or 440 VAC.
the plans also show only one run cap, and show it wired from the 240V hot lead to the cap, and then back to the generating lead of the three phase R.P.C. motor.
In some of the posts I have read, some have used multiple caps to balance the voltage. In my limited knowledge, it seems like a good idea to me. My question is what size caps do I need for both starting, and running, and what is the best way to wire them in so that I don't end up letting the smoke out. i would like to have it so that the three phase R.P.C. motor will start on its own. If need be, I can put in a kicker motor for starting, but would like to keep it simple, (so to speak).