Electrical Installations Free Essays

Electrical apparatus and wiring systems are to be constructed and installed in accordance with the requirements of this Section. Standard Distribution System The following are recognized as standard systems of distribution. Distribution systems differing from these will be specially considered. We will write a custom essay sample on Electrical Installations or any similar topic only for you Order Now Two-wire direct current Three-wire direct current Two-wire single-phase alternating current Three-wire three-phase alternating current Four-wire three-phase alternating current Three-wire single-phase AC may be used in conjunction with this system for lighting. Materials All electrical equipment is to be constructed of durable and flame-retardant materials. Materials are to be resistant to corrosion, moisture, high and low temperatures, and are to have other qualities necessary to prevent deterioration in the ambient conditions that the equipment may be expected to encounter. 13 Grounding Arrangements Where not obtained through normal construction, arrangements are to be provided o effectively ground metal structures of derricks, masts and helicopter decks. See also 4-2-617. 1. 3 for fuel storage for helicopter facilities. How to cite Electrical Installations, Papers