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About Ron Robertson
Expertise
I can answer questions regarding: Code, services, feeders, branch circuits, transformers,overcurrent protection, basic motors and motor conrol, load and voltage drop calculations, troubleshooting. I will not answer questions on advanced motor control, logic controllers, and questions which are typically engineering functions: short circuit current calcs, power factor correction, etc.

Experience
Licensed electrician since 1968. Owner-Robertson Electric Company, residential/commercial contractor. Certified by International Association of Electrical Inspectors for residential and general code enforcement inspection, and plans review for compliance. Owner, FPN,Inc., providing electrical inspection for compliance for small municipalities; former Chiel Electrical Inspector, Village of Libertyville, IL; former licensed commercial electrical inspector, State of Wisconsin; Instructor for 3rd and 4th year apprentices, Associated Builders and Contractors, Northern Illinois Chapter.

Education/Credentials
4 years H.S., 2 years college, IAEI certified inspector; certified instructor, National Center for Construction Education and Research.

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Electric Power & Utilities - electric motors

Expert: Ron Robertson - 11/5/2009

Question
QUESTION: Hi, I'm trying to hook up a Mill/Drill to 220v and using the reverse switch. sofar I have been able to make the motor run on fwd only. Right now the switch works fwd on fwd and rev on fwd. I have found a wiring diagram of the same type of milling machine, but the wiring colors are different and on wire has been illuminated (#5 rd). Talking to the previous owner who had it wired to 110 volts, had reverse working fine. could you help me on this, I have attached a web adres of the of the mill if you download owners manual you can view the wiring set up.
thanks

ANSWER: Mark...
I didn't get the web address.
Just put it in the body of your reply. I'll look it up and help you if I can.

Ron

---------- FOLLOW-UP ----------

QUESTION: http://www.grizzly.com/products/Gear-Head-Mill-Drill/G1126, sorry forgot,
thanks mark

Answer
Mark...
After looking at the literature, it seems the wiring changes are confined to the numbered leads
coming out of the motor (No.s 1 thru 6) From the picture, it looks as if the leads are numbered as well as color coded....is this the case?
I assume that you changed the plug to NEMA 6-15, and have a 220 volt circuit available. If so, you should only need to move the numbered leads to the positions indicated on the 220 volt diagram. You should not make any changes in the switch.
Let me know how this comes out.
R

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