Siemens P1 Instrukcja Użytkownika Pobierz pdf (Strona 9)

P1 Panelboards • Quick reference for selection and application

General Specifications

Service Entrance Equipment

When a panelboard is used as service entrance equipment, it must

be located near the point of entrance of building supply conductors.

In a main lugs only panel, the number of breakers or switches

directly connected to the main bus must be limited to six. In a panel

having a main breaker or main switch, the number of circuits are

not limited except as may be provided under other panelboard

requirements. Also, panels must include a connector for bonding

and grounding neutral conductor.

Integrated Equipment Short Circuit Rating

The term “Integrated Equipment Short Circuit Rating” refers to the

application of series connected circuit breakers in a combination

that allows some breakers to have lower individual interrupting

ratings than the available fault current. This is permitted as long as

the series combination has been tested and certified by UL.

Standards

NEC: 2014 (where accepted)

NEMA: PB1

UL: 67, 50 and 50E. Listed by Underwriter’s Laboratories, Inc.,

under “Panelboards” File #E2269, and #E4016. Meets

Federal Specification W-P-115c.

Wire Connectors

Standard wire connectors in Siemens panels are suitable for copper

or aluminum cables rated 60/75 degree. Copper main lugs are a

price-added option for most panel types and some Circuit Breakers

(check with Siemens sales for availability). It should be noted that

most copper lugs will only accept copper cables. Some applications,

100% rated devices in particular, require that the cable and

connectors be rated 90 degree but are sized to the 75 degree tables.

Standard ground connectors are also suitable for copper or aluminum

wire. Ground connector assemblies (EGK, IGK) have (7) 1/0 max. and

(15) #6 max. connections. The 1/0 holes are capable of connecting up

(3) #10 max. wires. The #6 holes can accept up to (2) #12 max. wires.

Copper ground assemblies (ECGK, ICGK) are rated for copper wire

only and have the same wiring capacity as the AL/CU connectors.

Standard neutrals, like standard main lugs, are also rated for copper

or aluminum wire. The neutral cross bar material follows the

selection bus. Copper neutral lugs are rated for copper cable only

and available as a price added option.

Lug Data

Space Required for Mounting of Double Panels

Use two or more panelboards with feed-thru or subfeed lugs when:

1. Lighting and appliance panelboards are required with more

than 42 circuits in areas where the zone code has not been

accepted. (Note: 54 and 66 circuit panels are also available.)

2. More circuit mounting space is required than is provided in

the largest box size.

Feed Thru Lugs Subfeed lugs or double lugs

Feed-thru lugs are mounted at the opposite end of the main bus

from the main lugs or main breaker and are used to connect two

or more panelboards to the incoming feeder. The feeder cables are

brought into Panelboard 1 and connected to the main lugs or main

breaker. Cables interconnecting the two panelboards are connected

to the feed-thru lugs in Panelboard1 and are carried over the main

lugs in Panelboard 2. This arrangement could be reversed with the

main lugs located at the top and the feed-thru lugs at the bottom

of the panel. Subfeed lugs are mounted directly beside the main

incoming lugs and are used to connect two or more panelboards to

the incoming feeder. The feeder cables are brought into Panelboard

1 and connected to the main lugs. Another set of cables that are the

same size are connected to the subfeed lugs of Panelboard 1 and

are carried over the main lugs of Panelboard 2.

Note: P1 panelboards do not have Subfeed lugs available. If this

configuration is needed, move to a P2 (or) P3 panelboard.

Shown mounted in wall

Wall

1.75in

(44mm)

0.25in

(6mm)

Shown mounted on wall

Panelboard 1 Panelboard 2

Main

Breaker

Neutral

Feed

Thru

Lugs

Main

Lugs

Neutral

PanelPanel

Incoming Feeder Cables

Panelboard 1 Panelboard 2

Neutral

Subfeed

Lugs

Main

Lugs

Main

Lugs

PanelPanel

Incoming Feeder Cables

Fig G-1 Fig G-2 (Not available for P1 panels)

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 31 32

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