Cisco Systems MGX 8230 manual Site Preparation Maintaining Safety with Electricity

Chapter 3 Site Preparation

Maintaining Safety with Electricity

–Disconnect power from the system.

–If possible, send another person to get medical aid. Otherwise, assess the condition of the victim then call for help.

•Use the MGX 8230 AC and MGX 8250 DC systems within their marked electrical ratings and product usage instructions.

•Install the MGX 8230 or MGC 8250 DC systems with the following local, national, or international electrical codes:

–United States—National Fire Protection Association (NFPA70), United States National Electrical Code.

–Canada—Canadian Electrical Code, Part 1, CSA C22.1.

–Other countries—International Electromechanical Commission (IEC) 364, Part 1 through Part 7.

•MGX 8230 AC models are shipped with a 3-wire electrical cord with a grounding-type plug that fits only a grounding type power outlet. This is a safety feature that you should not circumvent. Equipment grounding should comply with local and national electrical codes.

•MGX 8230 DC models are equipped with DC power entry modules and require you to terminate the DC input wiring on a DC source capable of supplying at least 60 amps. A 60-amp circuit breaker is required at the 48 VDC facility power source. An easily accessible disconnect device should be incorporated into the facility wiring. Be sure to connect the grounding wire conduit to a solid earth ground. A closed loop ring is recommended to terminate the ground conductor at the ground stud.

•Other DC power guidelines are:

–Only a DC power source that complies with the safety extra low voltage (SELV) requirements of UL 1950, CSA C22.2 No. 950-95, EN 60950 and IEC 950 can be connected to an MGX 8230 DC-input power entry module.

–MGX 8230 DC which is equipped with DC power entry modules is intended only for installation in a restricted access location. In the United States, a restricted access area is in accordance with Articles 110-16, 110-17, and 110-18 of the National Electrical Code ANSI/NFPA 70.

Warning Definition

Warning Means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents.

Waarschuwing Dit waarschuwingssymbool betekent gevaar. U verkeert in een situatie die lichamelijk letsel kan veroorzaken. Voordat u aan enige apparatuur gaat werken, dient u zich bewust te zijn van de bij elektrische schakelingen betrokken risico's en dient u op de hoogte te zijn van standaard maatregelen om ongelukken te voorkomen.

Varoitus Tämä varoitusmerkki merkitsee vaaraa. Olet tilanteessa, joka voi johtaa ruumiinvammaan. Ennen kuin työskentelet minkään laitteiston parissa, ota selvää sähkökytkentöihin liittyvistä vaaroista ja tavanomaisista onnettomuuksien ehkäisykeinoista.

	Cisco MGX 8230 Edge Concentrator Installation and Configuration
3-4	Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001