nVent HOFFMAN A24D2410 Bulletin A9 Enclosures Instruction Manual
- June 13, 2024
- nVent HOFFMAN
Table of Contents
nVent HOFFMAN A24D2410 Bulletin A9 Enclosures
Product Information
The product is a Nvent Hoffman Bulletin A9 enclosure designed for use in Class II Group E, F, and G locations. The enclosure features .375-inch steel plate ends that allow for the connection of conduit. It can accommodate conduit sizes up to 2 inches.
Product Usage Instructions
- Choose whether you want to make the conduit entrance in the upper or lower end of the enclosure.
- Using the correct drill size from the table below, drill and tap the hole(s) for the conduit entrance at the desired location in the upper or lower ends. Only use taper pipe thread (NPT) taps.
- Screw the conduit into the tapped hole, ensuring that it protrudes far enough through the wall to attach a conduit bushing.
- Attach a conduit bushing to the protruding portion of the conduit.
| Conduit Size (inches) | Drill Size |
|---|---|
| 1/2 | 5/8 |
| 3/4 | 7/8 |
| 1 | 1-1/8 |
| 1-1/4 | 1-3/8 |
| 1-1/2 | 1-5/8 |
| 2 | 2-1/8 |
Note: If there are any unused conduit openings, they must be filled with conduit plugs of the correct thread size and with a minimum thread engagement of 3 1/2.
INSTRUCTIONS FOR CONNECTION OF CONDUIT TO NVENT HOFFMAN BULLETIN A9 ENCLOSURES FOR CLASS II GROUP E, F, AND G LOCATION
INSTRUCTIONS
- Conduit entrance must be made either in the upper or the lower end of the enclosure. The ends are .375-inch steel plates which will provide in excess of 3 1/2 full threads for conduit size through 2 inches when drilled and tapped.
- Drill and tap the hole(s) for the conduit entrance at the desired location in the upper or lower ends. See the table below for the correct drill size. Use taper pipe thread (NPT) taps only.
Conduit Size
Normal Conduit Size. /. Pipe Tap Drill Size
- 1/2-14 (minimum conduit size) ..23/32
- 3/4-14. 15/16
- 1-11 1/2. .1 5/32
- 1 1/4-11 1/2 .1 1/2
- 1 1/2-11 1/2 .. 1 23/32
- 2-11 1/2 (maximum conduit size) ..2 3/16
- Screw the conduit into the tapped hole. The conduit must protrude far enough through the wall to attach a conduit bushing.
- Attach a conduit bushing to the protruding portion of conduit.
- Note: Unused conduit openings must be filled with conduit plugs of the correct thread size and with a minimum thread engagement of 3 1/2.
CONTACT
- Rev. C © 2019 Hoffman Enclosures
- Inc. PH 763 422 2211
- nVent.com/HOFFMAN.
- P/N 99401517
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>