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P1 Panelboards • Quick reference for selection and application
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1. Non-Feed-thru (NFT) variations of the P1 Panels are now
available for Factory assembled only (not UPB):
• Feed-Thru (FT) versions are versions with a Sub-feed space
that can be occupied by Feed-thru lugs, Subfeed Breaker or
an SPD device. All Original P1 devices were FT versions.
• Non-Feed-thru (NFT) versions do not have the Subfeed
space and therefore can fit into an enclosure 6“ smaller
than the FT version.
The NFT version will have a List price lower than the FT
version if configured the same.
• Both FT and NFT variations are fully invertible in the field and
can be used for either Top-feed or Bottom-feed applications.
2. Extended Circuits are now available:
Currently only 18, 30 and 42 circuits are available 54
and 66 “extended circuit” panels are added for Revised P1
a) P1-250A will have FT and NFT variations for all circuits:
18, 30, 42, 54 and 66 (xGB panels only available as FT)
b) P1-400A will have FT and NFT variations for 30, 42, 54
circuits only. (xGB panels only available as FT)
• The 66 circuit variation of 400A is only available in NFT
due to enclosure size limit of 74“ high.
• Also P1-400A will not be available in 18 circuit variations.
Benefits: Many P2 and P3 applications can now move down to
the P1 platform!
3. New Neutral Configurations are now available:
• The new Neutral system has been developed to
accommodate the extended circuit variations without
increasing costs.
• The new configuration is still a split neutral arrangement
with connections down either side of the interior, but it is
not full length as before. Neutral connections are still near
the breakers, but not adjacent to each breaker connection.
Many configurations have extra connections and some larger
configurations will allow adding more connections if needed.
4 Unassembled Panelboard Program Changes:
• The UPB program will only get 54 circuit added to the
program for both P1-250A and P1-400A.
• All UPB interiors will be the FT variation, the same as Original
P1. (400A - 18 circuit is no longer available)
• All old Accessories/Kits will remain available for future needs
in Original P1 installations.
• New Accessories/Kits are available - most are same as old kits
with “A” added to end of part number. (see below)
5. Accessories and Kits for Revised P1 are replacing most of
the Original P1 Kits:
(most simply add an “A” to end of old kit number)
a) All Main/Subfeed Breaker Mounting kits are new. Both “Strap
Kits” and Kits with Breakers.
b) All Main Lug Kits are new.
c) All Neutral Lug Kits are new.
Revised P1 Panelboard FAQ’s
New Features and Options for “Revised P1” Offering compared to the “Original P1” panels
6. BL/BQD and xGB (NGB/HGB/LGB) Main Breaker Usage is now
only available as a Back-Fed variation.
• The Revised P1 interior does not have “strap kits” for the BL/
BQD and xGB series of breakers to be used in the “Main” or
“Sub-Feed” positions. If needed to be used as a Main - we
now have a “Main Label Kit” that allows the placement of the
breaker in unit space to be used as the Main when labeled
properly. This does reduce unit space by “2 circuits” in a single
phase panel and by “3 circuits” in a 3-phase panel. Since 54 and
66 circuit panels are now available - this should not be an issue.
7. New B-Phase Bus configuration eliminates “Hump-bus” design
• The new flat bus with “B-Phase” connector has many
benefits. Increases productivity at the plant and allows
for replacement connectors in the field in case of a
“stripped” connection.
• Accessory kits for both CU and AL variations of the B-Phase
Connectors and A/C Connectors will be available for repair
purposes only.
8. xGB Breaker series expansion: NGB remains, but HGB and LGB
have been added
• This addition to the Breaker line will now allow many
configurations to use the Revised P1 series or the P2 series
platforms instead of the P3 platform. Net pricing to customer
will be lower. See new ratings below:
NGB – 25,000 A IR Max. @ 480/277V AC / 100,000 A IR @ 240V AC
HGB – 35,000 A IR Max. @ 480/277V AC / 100,000 A IR @ 240V AC
LGB – 65,000 A IR Max. @ 480/277V AC / 100,000 A IR @ 240V AC
9. Misc. additional features:
a) New 750 kcmil AL/CU MLO will be available as an option for
400A. (CU cable limited to 600kcmil)
b) New 2/0 neutral kits are available. (used with 125A xGB
and others) (Only available as a field installable option)
c) New filler DFFP1 is introduced replacing QF3 (fits tighter
in deadfront)
10. Misc. additional changes/notes:
a) All DC voltage offerings are removed from scope of Revised
P1 devices.
Customers will be moved to a P2 configuration for
these DC Voltage applications.
b) Limits on branch breaker size for 250A 18 circuit only:
• The new Revised P1 (18 circuit 250A only) is limited to 100A per
connection (200A per pair)
• Original P1 and the Revised P1 allows for the following:
(except as noted above)
1) 100A per connection (200A per pair) for BL/BQD construction
2) 125A per connection (250A per pair) for xGB construction
Some of our competition limits the total to 140A per pair on
some panels.
- Revised P1 Panelboards 1
- Revised P1 Panelboard 250A 4
- Revised P1 Panelboard 400A 5
- Revised P1 Panelboard FAQ’s 6
- Type P1 Panelboards 8
- Selection and Application 8
- General Specifications 9
- Catalog Numbering System 10
- Application 11
- Typical Catalog Numbers 15
- Standard Modifications 16
- Enclosure Modifications 17
- Compression Lugs 17
- Remote Switch Modifications 17
- Dimensions 18
- Distributor Stock 22
- Built to order 24
- HACR rated 25
- UL 1449 3rd Edition SPD 26
- TPS3■ o ■02■ oo o 27
- 6.2.14.jb 29
- TPS3 o L2 oo o 29
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