Gap between Extension & Box Code Issue?

[Lou N]

All,

I just finished up installing a condensate pump for our furnace and part of the project was upgrading the electrical to include a GFCI receptacle
for the pump. I used an extension for the box to make more room for the pigtails so things weren't jammed up; I didn't install the original box so I went with the extension.

There's a gap between the box and the extension, is that a code issue or perhaps I can cover the gap with some butly furnace tape?

BTW - the furnace power is independent of the GFCI.

Thanks,
Lou
Lou

 

[Little Bill]

Looks like the wrong extension for that box.

@Lou N
Would you please update your profile to include your occupation?

 

[infinity]

It should fit tighter than that.

 

[roger]

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