nd of section.

Refer to corresponding SPECTEXT and SPECTEXT II specification sections for technical assistance
when describing the products of this OUTLINE.

Manufacturers listed in this section were identified as representative and not as an endorsement for
meeting this specification. For additional product information, visit 4Specs at
www.4specs.com
, ARCAT
at
www.arcat.com
, First Source at
www.reedfirstsource.com
, SpecSource at
www.specsource.com
, and
Sweets Network at
products.construction.com
.

Contact the CSRF Support Center at
supportcenter@csrf.org
to submit comments or suggestions for
improvements to this specification. Visit the SPECTEXT web site at
www.spectext.com
for current
product announcements.
******************************************
PART 1

GENERAL
1.1

SUMMARY
A.

Section includes short circuit and protective device coordination study for the following
portions of electrical distribution system from normal power source or sources to and
including:
1.

Breakers in service entrance switchboard.
2.

Main breaker in sub-distribution panels.
3.

Main breaker in each panelboard.
1.2

DESIGN REQUIREMENTS
A.

Report Preparation:
1.

Perform study with aid of computer software program.
2.

Obtain actual settings for [packaged chiller] [and] [motor characteristics] [and]
[____________________] for equipment incorporated into Work.
3.

Calculate short circuit interrupting and, when applicable, momentary duties for
assumed 3-phase bolted fault short circuit current and phase to ground fault short
circuit current at each of the following:
a.

Utility supply bus.
b.

Medium voltage air interrupter switchgear.
c.

Medium voltage circuit breaker switchgear.