hhsting
Senior Member
- Location
- Glen bunie, md, us
- Occupation
- Junior plan reviewer
Nec 2014 Article 517.35(C) says ....consideration shall be given to the possible interruption of normal electrical services resulting from similar causes as well as possible disruption of normal electrical services due to internal wiring and equipment failures....
Then their is an informational note afterwards facilties in which normal power consists of power is supplied by two or more separate central station fed experience greater than normal electrical service reliability than those with single fed. Such a dual source of normal power consists of utility distribution network that multiple power input sources and is arranged to provide mechanical and electrical separation so that fault between the facility and generating source is not likely to cause an interruption of more than one of the facility service feeders.
Question does NEC 2014 517.35(C) possible interruption of normal electrical services resulting from similar causes as well as possible disruption of normal electrical services due to internal wiring and equipment failures to mean disruption due to wiring of utility services and its equipments between utility network to sub station upto facility? If not then what does 517.35(C) exactly mean?
Then their is an informational note afterwards facilties in which normal power consists of power is supplied by two or more separate central station fed experience greater than normal electrical service reliability than those with single fed. Such a dual source of normal power consists of utility distribution network that multiple power input sources and is arranged to provide mechanical and electrical separation so that fault between the facility and generating source is not likely to cause an interruption of more than one of the facility service feeders.
Question does NEC 2014 517.35(C) possible interruption of normal electrical services resulting from similar causes as well as possible disruption of normal electrical services due to internal wiring and equipment failures to mean disruption due to wiring of utility services and its equipments between utility network to sub station upto facility? If not then what does 517.35(C) exactly mean?