Services & DistributionQuestion 31 of 521
Why is a service disconnect required to be readily accessible and located near the point of entrance of the service conductors?
a.To reduce voltage drop
b.To improve power factor
c.To allow quick de-energizing of the premises in an emergency
d.To meet minimum ampacity
Explanation
A readily accessible service disconnect near the entrance lets responders quickly de-energize the building and limits the length of unprotected service-entrance conductors inside. Voltage drop, power factor, and ampacity are unrelated to the disconnect-location rule.
Practice all 521 questions free — no signup required.
Related questions on this topic
- For circuits rated over 800 A, what is the rule for the overcurrent device relative to conductor ampacity?
- A service uses 3/0 copper conductors at 75 C (200 A ampacity) with a 200 A load. What is the correct standard OCPD?
- As a general rule, where must overcurrent protection for a conductor be located?
- A branch circuit carries a continuous load of 80 A. What minimum OCPD rating is required?
- Using the standard 3 VA/sq ft general lighting unit load, what is the general lighting load for a 2,000 sq ft dwelling (before demand factors)?
- A dwelling has two required small-appliance branch circuits and one laundry circuit. What is the total calculated load for these before demand factors?
Last reviewed: · editorial process
PrepPass Editorial Team · Verified against California CSLB C-10 Electrical Trade Examination · How we review