UFC 4-211-01N
25 October 2004
CHAPTER 7
ELECTRICAL REQUIREMENTS
7-1
GENERAL. As a minimum, electrical equipment installations must
comply with NFPA 70, National Electric Code. Provide electrical systems in
accordance with DRAFT UFC 3-500-10N, Design: General Electrical
Requirements and this UFC.
7-2
HANGAR (OH) SPACE. Design the maintenance hangar (OH)
space to meet the criteria set forth below.
7-2.1
Electrical Equipment. Electrical equipment should be waterproof,
NEMA Type 4 (minimum rating) when deluge sprinkler protection is provided to
prevent equipment damage in the event of testing or accidental discharge of the
deluge system.
7-2.2
Snow-Melting System. For snow-melting systems at the hangar
door tracks of sliding hangar doors, use electrical heating cable in conduit for
removal/maintenance. Locate below the slab for ease of maintenance.
7-3
HAZARDOUS ZONES. Classify areas in high bay space as
hazardous or non-hazardous in accordance with NFPA 70. All electrical
installations must meet applicable requirements. To the extent possible,
electrical installations should not be located in hazardous zones.
7-4
POWER SERVICE POINTS. UFC 4-121-10N identifies the various
types, the capacity, and the location and installation requirements of electrical
power to be provided at the power service points. Aircraft power service points
should be positioned as required to provide adequate connections to aircraft to
be maintained in the hangar. The power service points will provide:
Three phase, 115/200V, 4-wire, 400 Hz, (kVA ratings as required
by aircraft type).
Three phase, 100 Amp, 480 V, 4-wire, 60 Hz, with (Class L)
receptacles for ground support equipment (GSE.) Special purpose
receptacles designed to mate with standard government equipment
must be Military Part Number MS90555C44152P. This receptacle
is built by very few manufacturers and must be identified by part
number. Coordinate required outlet requirements with the using
activity.
Single phase, 120 V, 60 Hz, ground fault interrupt duplex utility
outlets.
28 V direct current (kVA ratings as required by aircraft type)
60
Previous Page
