extention box

[tmshepherd]

Is there any problem with using extention on 1900 box.
one inspector rejected the installation without code reference.

 

[electricman2]

Re: extention box

As long as 300.14 is met with the extension in place there shouldn't be a problem.

 

[ron]

Re: extention box

I've also seen 300.14 quoted for a violation. At least 6" .....

 

[pierre]

Re: extention box

As long as you can meet the "length of free conductor" requirement, you can install extension collars. UL lists them, without restriction as to how many can be installed on one box.