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Electrical install in a stand alone garage

Toolhorder

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Joined
Nov 9, 2009
Messages
5,711
Location
Montana
Okay so here's the story. 10 years ago I started renting a home from my girlfriend's aunt. It was an older home built after WW2 or so. It has a single car garage that has been expanded behind the single car part for extra storage sometime along the way. While I was renting the home a noisy neighbor called the code enforcement after I was letting a family member stay inside the add on part of the garage for a short time. The space/garage had both water (sink) and electricity at this time. The code officer wrote a ticket for the water and the electricity because they were not up to code. The water came in from the back main house's facet plumbed in and pipe buried and ran out to the garage. The pipe had been buried in the ground for probably 20 years from the looks of it when they dug it up.
Basically they capped off the water and dug up the pipe to "fix" that problem.
The electrical wasn't up to code because the garage needed a separate panel from the main house and the height of the pipe was too short that the wires from the main house to the garage ran from roof to roof.
They "fixed" this by just removing the wiring and circuit from the main house box.
Since then I bought the home, married the girlfriend. I have been running extension cords too long and need to get the wiring fixed since I got my lathe project. I got an estimate a couple years ago for $1500 for a box in the garage and to wire it. I pull the permit and dig the hole from the main house to the garage.
I don't know if that's a good deal or not. Probably not.
I would like to do the job myself I have a pretty good understanding of working with electrical and I think I could do it.
I need to know how to figure out how to do it up to code here in CA. and what it would take. I need to have at least one 220 outlet in the garage and the amp rating needs to be able to handle a welder and that huge lathe I just got. I'm assuming I'll still need to get a phase convertor for the lathe later but I'm pretty sure I can't get 3 phase 220 in a regular neighborhood.
Any ideas?
 
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deter

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Jun 22, 2011
Messages
578
Location
Indiana
as far as the lathe, the best route we found was to put a single phase motor on it and sell the 3p motor.

For wiring the garage, how far is the garage from the house? You said you were responsible for the permit and digging the hole, what else was included with the $1500?
 
OP
T

Toolhorder

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Joined
Nov 9, 2009
Messages
5,711
Location
Montana
as far as the lathe, the best route we found was to put a single phase motor on it and sell the 3p motor.

For wiring the garage, how far is the garage from the house? You said you were responsible for the permit and digging the hole, what else was included with the $1500?

I really don't want to change the motor from it's original config.

The garage is about 15 ft. from the main house maybe. Pretty close. For $1500 I had to pull the permit and dig the hole from the main house to the garage for the wiring to be buried. I really don't see why I would give the guy $1500 for putting a box on my garage and running wire 15 ft. I can do that too. I guess I'll get a wiring book and figure it out. Can't be that hard
 
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lakee911

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Joined
Sep 8, 2012
Messages
53
Location
Columbus, OH
You can do it all and we can help you do it right.

Have you considered using a VFD for the phase converter? How many HP is the motor and is it 240 or 480?
 

Norcal

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Joined
Mar 16, 2008
Messages
13,764
PG&E will **** you to get 120/240V 3Ø, 240V 3Ø is no longer avail to new customers, (220V is not avail. :D) they only supply it to existing one's, & the same applies to 480V, all that they supply is 480Y/277V, but 480 is not for untrained people as the consequences of a screw up is severe.

For 3Ø machines where one does not have 3Ø avail. means either a VFD, or a RPC, Rotary Phase Converter, either will work w/ 240V 1Ø.
 

wyliesdiesels

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Joined
Aug 14, 2012
Messages
20,032
Location
Modesto, CA
Ok, to help u out, we need some more details. I see u gave the distance between the buildings, but we need to know what the total wire length will be panel to panel(just an estimate). Also, what is the load rating of the equipment(welder, generator, etc.) U will be using in the garage?

You will need a 4 wire feeder as well as 2 ground rods @ the garage. U will also need to bond any metal water lines going into the garage...Let us know the details!
 
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