Sub Panel In Garage - How Many Amps? - Electrical - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 02-06-2009, 09:20 PM   #1
Member
 
Join Date: Apr 2008
Location: Western Masschusetts
Posts: 575
Rewards Points: 500
Default

sub panel in garage - how many amps?


I recently had a new 200amp service installed at my house.
the garage still has a subpanel, with just one 15amp fuse in it.

i want to rewire the entire garage with a sub breaker panel.
not sure how big to make it.

40amp? 60?

Basically just running power tools. I have a table saw which probably draws the most amperage and I may put an outlet for that on a separate circuit.

I'm barely using anything in the house right now, but I want to do this in such a way as to have plenty of options down the road for both places (maybe someday someone will want to charge an electric car out there, for example?).

Thanks.

Advertisement

wombosi is offline   Reply With Quote
Old 02-06-2009, 10:20 PM   #2
DIY'er
 
jamiedolan's Avatar
 
Join Date: Sep 2008
Location: Neenah, Wisconsin, USA
Posts: 2,032
Rewards Points: 1,000
Blog Entries: 2
Default

sub panel in garage - how many amps?


Quote:
Originally Posted by schmolze View Post
I recently had a new 200amp service installed at my house.
the garage still has a subpanel, with just one 15amp fuse in it.

i want to rewire the entire garage with a sub breaker panel.
not sure how big to make it.

40amp? 60?

Basically just running power tools. I have a table saw which probably draws the most amperage and I may put an outlet for that on a separate circuit.

I'm barely using anything in the house right now, but I want to do this in such a way as to have plenty of options down the road for both places (maybe someday someone will want to charge an electric car out there, for example?).

Thanks.
Run large PVC conduit, it's cheap, and make an upgrade very easy. I don't know what an electric car would to charge it up, but I'd imagine it could use a hefty amount of power if it was going to charge up quickly.
That in mind, I'd run 1-1/4" or 1-1/2" PVC (buried).
For now a run of 8 gage thhn in conduit for 50a service would likely be more than enough.
Jamie

Advertisement

__________________
Jamie Dolan - Neenah, WI
Jamie Dolan Paw Dogs
Need Help Uploading Photos? Click here.
jamiedolan is offline   Reply With Quote
Old 02-06-2009, 10:36 PM   #3
Member
 
Join Date: Jan 2009
Location: South of Boston, MA
Posts: 17,248
Rewards Points: 2,000
Default

sub panel in garage - how many amps?


The electric car idea is a pretty good example
I'm going with a 100a panel in my garage
I only want to run wire once

ZAP Fast Charger:
Quote:
It connects to a 240-volt, 60 amp circuit or 208-volt, 3-phase, 50 amp circuit.
But they also want people to be able to charge from a normal household outlet:

Quote:
A normal household 120-volt outlet typically has a 15-amp circuit breaker, meaning that the maximum amount of energy that the car can consume is approximately 1,500 watts, or 1.5 kilowatt-hours per hour. Since the battery pack in Jon's car normally needs 12 to 15 kilowatt-hours for a full recharge, it can take 10 to 12 hours to fully charge the vehicle using this technique.
Scuba_Dave is offline   Reply With Quote
Old 02-06-2009, 11:27 PM   #4
Tool Geek
 
PaliBob's Avatar
 
Join Date: Jun 2008
Location: Pacific Palisades CA
Posts: 2,546
Rewards Points: 2,072
Default

sub panel in garage - how many amps?


When I rewired my house in the late 1980's I put in two 90 Amp SquareD load Centers. One at the rear of the house and another for the attached garage. Both are fed by their own 70 amp two pole breakers in the main panel.

It's really nice to have 220 in the Garage although the original reason was to power up a Radial Arm Saw. Now an Antique.
Attached Images
 
__________________
Disclaimer
& Stay Safe
.....Bob Lavery
PaliBob is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Old House Rewire finnimus Electrical 15 05-13-2011 11:39 PM
This doesnt seem right. JoulesWinfield Electrical 27 07-26-2009 08:40 PM
Replacement Meter Panel leonard_voet Electrical 19 04-09-2008 11:27 AM
Detached Garage Sub Panel Grounding Q integlikewhoa Electrical 13 01-01-2008 07:22 AM
Detached Garage Sub Panel MainePainter Electrical 6 08-25-2006 10:58 AM




Top of Page | View New Posts