Replies

1. 
   Anderson | Feb 27, 2007 05:15am | #1

   If you've 220, re-wire the motor for it. There is less IR drop in the motor and the lines. The motor WILL run cooler.

   Barry in WV

1. 
   JJV | Feb 27, 2007 05:08pm | #3

   Yeah, that's the thing-I don't have 220.  I'm not looking to purchase one, I was just looking around and it got me thinking. 

   I should get a sub-panel in the garage because the main panel is only 100 and it's already full.  I had to take out the dryer circuit and drop in a couple of 20-amp breakers to get additional power in the garage, which had all of one outlet in it when I moved in. 

   Anyway, neither here nor there.  Thanks for the response.  

   Maybe someday I'll know a little something.

1. 
   Anderson | Feb 27, 2007 09:33pm | #7

   Well, when I built my shop in my garage, I had the same problem. I finally put in a sub-panel for it. As for your 100A entrance. That is a little small for the home of today. I understand the cost restrictions, however.

   The way I put my sub-panel in, I bought the stuff and installed it. I had an electrician come, inspect it and hook it up to the main panel. I saved a LOT of money doing it that way. The folks at Home Depot were good with their instructions on how to do it. The best time to find knowledgeable folks is during the weekend. I found an electricians helper working there who knew what he was talking about. It was a 2nd job for him ... picking up a little extra cash for a new family.

   Barry in WV

1. 
   JJV | Feb 27, 2007 09:45pm | #8

   I've thought about doing that-getting the materials and having an electrician do the inspections and make the final connections.  The house is only 15 years old so I'm surprised at the service.  My wife's uncle just put a huge addition on their very old home and upgraded to 400 amp service!!  It's pretty impressive. 

   In due time, I guess.  

   Maybe someday I'll know a little something.

1. 
   tinkerer2 | Feb 27, 2007 10:30pm | #9

   Even thought I have wired several houses I had an electrician wire my barn and entrances to the house and garage.  I wasn't too sure about the underground entrances.  I must say I did have to correct several of their mistakes.  Amongst other things I had to convince them that I needed 220 circuits for my big tools even though he said he had wired wood shops before.  We installed 200 amps to the house and barn and a 100 amp service to the garage.  Relocated the entrance to the 100+ year old house that I had rewired thirty some years ago.

2. 
   tinkerer2 | Feb 27, 2007 07:20am | #2

   You're probably alright if you don't load it to it's limit.  I bought a MM16 some months ago.  It has is rated at 4.8 HP and  22 amps at 220 volts.  I very carefully wired it for 30 amps, but then noticed the instructions stated it would probably work okay with a 20 amp breaker.  The motor is so big for the application that I assume the amperage would be minimal.  Shouldn't have planned usage of more than 80% of the rated load of the breaker.  I think that is to give a safety factor.  In our case, the load for a 20 amp breaker shouldn't be more than 16 amps.  I gather that the Grizzly doesn't have onboard current protection so the breaker is probably protecting the motor.

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   Edited 2/26/2007 11:23 pm ET by tinkerer2

   
   

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   Edited 2/26/2007 11:24 pm ET by tinkerer2

1. 
   JJV | Feb 27, 2007 05:24pm | #4

   Well now that's interesting.  The instructions said that you could run their 22-amp motor on a 20-amp circuit?  I suppose you'd be hard-pressed to really tax the motor on that to the fullest, so that kind of makes sense. 

   Thanks for the insight. 

   Maybe someday I'll know a little something.

1. 
   tinkerer2 | Feb 27, 2007 06:04pm | #5

   It kind of surprised me.  It wasn't the instructions from the company which are very sketchy.  Rather the instructions you can get from the web, which are much better.  Someone on this forum put me on to that.  You ought to up your house panel to 200 amps.  Then you could move the 100 amp to the garage.  The lack of it will bug you over the years until you finally yield.

1. 
   JJV | Feb 27, 2007 06:51pm | #6

   Yeah, I know-I've been itching to do it for a while.  Other things take precedence, though-child #3 is on the way this summer and there are less dad-centric things that need to be done in anticipation! 

   Maybe someday I'll know a little something.