DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Electrical (http://www.diychatroom.com/f18/)
-   -   220 Exterior Wiring being spliced (http://www.diychatroom.com/f18/220-exterior-wiring-being-spliced-144918/)

kmatthews 05-26-2012 11:27 AM

220 Exterior Wiring being spliced
 
I'm having some irrigation installed. The installer cut through a 220 in ground line. They said it would be ok to splice it and put silicone around it. I'm concerned about the safety since the line is connected to an outlet in a detached garage that contains 2 kilns that run on the 220 circuit. The garage is about 50 feet from the house. Is it safe to splice the wire in three places in the manner described above? Should another line be run within conduit? Will splicing effect the amperage?

k_buz 05-26-2012 11:33 AM

Simply splicing the wires that were cut and siliconing the connections is not compliant. I always use a no heat, underground splice kit, but they do have heat shrink varieties as well.

I should ask, what type of wire was cut? Direct burial?

kmatthews 05-26-2012 11:57 AM

What type of wire
 
In answer to your question regarding the type of wire and whether it was buried directly in the ground: the type of wire is Rouond NM-B cable, AWG 10-3 w/ ground, non-metalic sheathed cable. The cable was originally in a conduit pipe. The person who was making the repair did not put it back into conduit. Should the wiring be re-run? Thank you for your advice.

Jim Port 05-26-2012 12:07 PM

Type NM-B is not rated for use outside or underground. It should not have been installed and should be replaced.

Since you have conduit this may not be that hard to fix by installing THWN conductors after patching the conduit.

Speedy Petey 05-26-2012 12:27 PM

It should be their responsibility to repair the conduit. NO question. DO NOT simply splice it outside the conduit.

It should then be your responsibility to replace the NM-B cable with the proper outdoor cable or conductors.

It's only 50'. That is not that big of a deal.

kmatthews 05-26-2012 01:14 PM

220 in ground spliced wiring
 
I had a feeling that something wasn't right. Just so I'll know when the next licensed electrician (yes, the electrician that ran the line was licensed) what type of wire should be used for a 220 outlet in ground? Should conduit be used irregardless of the type of wire? I live in Florida in an area with very high degree of lightning strikes. I was wondering if it would be safer with conduit. Thanks for the information. Although I'm a consumer, I've learned that I have to be somewhat knowledgeable or this kind of thing happens:no:

Techy 05-26-2012 01:52 PM

If a cable is used it should be type UF.

Individual conductors should be type THWN

Techy 05-26-2012 02:03 PM

you also may have another violation (more than one circuit ran to a detached outbuilding)

Speedy Petey 05-26-2012 02:54 PM

Quote:

Originally Posted by kmatthews (Post 929161)
I had a feeling that something wasn't right. Just so I'll know when the next licensed electrician (yes, the electrician that ran the line was licensed) what type of wire should be used for a 220 outlet in ground? Should conduit be used irregardless of the type of wire? I live in Florida in an area with very high degree of lightning strikes. I was wondering if it would be safer with conduit. Thanks for the information. Although I'm a consumer, I've learned that I have to be somewhat knowledgeable or this kind of thing happens:no:

First off, there is no certain wire for a "220 outlet". I know this is a generalization, but I just want to clear this fact up.

Second, are you SURE it is NM-B and not UF? They look amazingly alike, especially when filthy.

andrew79 05-26-2012 03:48 PM

our underground wire up here is labelled nmwu for the most part. It's almost identical to regular nm except for a little thicker exterior rubber. It's generally black in color and indoor is generally white. You can incase it in conduit but it's not necessary although it will affect the depth it needs to be buried at. Personally if your going to run a conduit then do as the others have suggested and run thwn single conductors. Much cheaper.

kmatthews 05-27-2012 11:03 AM

Splicing 220 wire
 
I don't really understand everything you all said completely, however I will keep the information so that I can refer to it when the worker comes back this week. I really appreciate the advice thank you for your time and expertise.:thumbsup:

rrolleston 05-27-2012 06:40 PM

How deep was this buried?

kmatthews 05-27-2012 06:56 PM

How deep is wire buried?
 
It's buried only about 6 inches.

Jim Port 05-27-2012 07:13 PM

Normal burial depth would be 12" if GFI protected and 20 amps or less, or 18".

Speedy Petey 05-27-2012 08:32 PM

Quote:

Originally Posted by kmatthews (Post 929922)
It's buried only about 6 inches.

No way this was done by any qualified electrician.


All times are GMT -5. The time now is 10:06 PM.


Copyright 2003-2014 Escalate Media LP. All Rights Reserved