PECO Distribution Systems & Infrastructure

Question 1

What is the standard secondary distribution voltage delivered to most residential customers in PECO's service territory?

Accepted Answer

120/240V single-phase

Answer

208/120V three-phase

Answer

480/277V three-phase

Answer

13.2 kV

Question 2

Which component steps down primary distribution voltage to utilization voltage for end users in a PECO distribution circuit?

Accepted Answer

Distribution transformer

Answer

Capacitor bank

Answer

Recloser

Answer

Sectionalizer

Question 3

PECO's primary distribution system most commonly operates at which voltage level for underground residential distribution?

Accepted Answer

13.2 kV

Answer

4.16 kV

Answer

69 kV

Answer

138 kV

Question 4

What is the primary purpose of a distribution substation in the PECO grid?

Accepted Answer

Step down transmission voltage to primary distribution voltage

Answer

Generate electricity from renewable sources

Answer

Store excess power during off-peak hours

Answer

Measure customer consumption for billing

Question 5

Which switching device on a PECO overhead distribution feeder automatically interrupts fault current and attempts to restore service through pre-programmed reclosing sequences?

Accepted Answer

Recloser

Answer

Fuse cutout

Answer

Sectionalizer

Answer

Disconnect switch

Question 6

In PECO's distribution infrastructure, what does the term 'feeder' refer to?

Accepted Answer

A medium-voltage circuit originating from a substation bus that supplies distribution transformers

Answer

A high-voltage transmission line connecting substations

Answer

An underground cable connecting a meter to a panel

Answer

A conductor connecting a customer transformer to the service entrance

Question 7

What is the role of a sectionalizer in PECO's distribution system?

Accepted Answer

Count fault current operations and open after a set number to isolate a faulted section

Answer

Continuously regulate voltage along a feeder

Answer

Provide reactive power compensation

Answer

Automatically reroute power during outages using SCADA