emt connectors

Status
Not open for further replies.

wireman1

Senior Member
at what size wire must a plastic bushing be used on the straight connector entering the box,is it a number 4 or larger? site article thanks
 

Ponchik

Senior Member
Location
CA
Occupation
Electronologist
OP asked for EMT connector.

I don't think the plastic bushing is required for EMT connectors. At least it is not required in 358.46 as it is in other XXX.46 section.
 

iwire

Moderator
Staff member
Location
Massachusetts
OP asked for EMT connector.

I don't think the plastic bushing is required for EMT connectors. At least it is not required in 358.46 as it is in other XXX.46 section.

It is required for conductors 4 and larger by 300.4 as Chris pointed out.
 

darekelec

Senior Member
Location
nyc
Although OP asked about emt connectors let's not forget about RMC entering a box.
344.46 Bushings. Where a conduit enters a box, fitting, orother enclosure, a bushing shall be provided to protect thewire from abrasion unless the design of the box, fitting, orenclosure is such as to afford equivalent protection.
FPN: See 300.4(G) for the protection of conductors sizes 4AWG and larger at bushings.
 

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
A good graphic from Mike:

011ecmCSfig8.gif
 

iwire

Moderator
Staff member
Location
Massachusetts
A good graphic from Mike:

011ecmCSfig8.gif

Not sure I agree with the graphic regarding PVC

352.46 Bushings. Where a conduit enters a box, fitting, or other enclosure, a bushing or adapter shall be provided to protect the wire from abrasion unless the box, fitting, or enclosure design provides equivalent protection.

I don't see a size limitation.
 

kwired

Electron manager
Location
NE Nebraska
OP asked for EMT connector.

I don't think the plastic bushing is required for EMT connectors. At least it is not required in 358.46 as it is in other XXX.46 section.

It is required for conductors 4 and larger by 300.4 as Chris pointed out.
I agree with you and Chris. Also if the connector would have an insulated throat or otherwise has edges that will not cause damage to the conductor it is probably designed/listed to not require the added bushing.
 
Status
Not open for further replies.
Top