Go Back  DoItYourself.com Community Forums > Electrical, AC & DC. Electronic Equipment and Computers > Electrical - AC & DC
Reload this Page >

Underground wiring from 9yr old house to garage not up to code?

Underground wiring from 9yr old house to garage not up to code?


Old 04-17-18, 11:23 PM
Thread Starter
Join Date: Apr 2018
Location: Canada
Posts: 1
Received 0 Votes on 0 Posts
Underground wiring from 9yr old house to garage not up to code?

I was looking into installing a 14-30 outlet in my garage for future EV charging. Currently my panel has a 2 pole 40A breaker servicing the garage (door opener, lights, 2 outlets). I had a look at the wiring leaving the house and entering the garage and it seems to be 14/3 gauge. From all the wiring charts I've seen online, they all say a 40A circuit should use 8/3 gauge wiring. I'm afraid that if I install a 14-30 outlet it may cause a fire. Did the builder not follow code?
Sponsored Links
Old 04-18-18, 05:11 AM
Geochurchi's Avatar
Join Date: Nov 2012
Location: USA
Posts: 4,033
Received 18 Votes on 18 Posts
Certainly not code if you have a 40 amp breaker feeding #14 ,should only be 15 amp.
Old 04-18-18, 04:15 PM
Tolyn Ironhand's Avatar
Group Moderator
Join Date: Nov 2007
Location: Twin Cities, MN
Posts: 12,967
Received 59 Votes on 52 Posts
The breaker you need to look at is where the feeder originates, which is likely in your main house panel. If the 40 amp breaker is located in the garage it is likely only a disconnect.

If you are confused you can post some pictures. (instructions are in the stickies)


Last edited by ray2047; 04-18-18 at 05:25 PM. Reason: Add link.

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

Thread Tools
Search this Thread
Display Modes
Ask a Question
Question Title:
Your question will be posted in: