Conformance Definitions

Conformance Definitions

What is an IEC Connector?

The International Electrotechnical Commission (IEC) is a not-for profit, non-governmental international standard organization that publishes International Standards for electrical and electronic products. IEC connectors are inlets and sockets used for AC Mains electricity that conform to the IEC 60320 Standard (plugs fall under IEC 60309). The plug and receptacle configuration chart on page 198 shows IEC configurations that are available in Geist products.

What is a NEMA Connector?

NEMA, which stands for the National Electrical Manufacturers Association, is a standards-setting body for the North American electrical industry. NEMA connectors are plugs and receptacles used for mains electricity that conform to NEMA standards. The plug and receptacle configuration chart on page 198 shows NEMA configurations that are available in Geist products.

What is AWG?

American Wire Gauge standard measurement for the cross sectional area of an electrical conductor.

What is a “Plenum Rated” cable?

A “Plenum” is compartment or chamber used for HVAC air distribution. In the data center, this is typically the space below a raised floor. A “Plenum Rated” cable refers to structured cabling permitted by building code for use in plenum spaces. Plenum rated cable has a slow-burning, fire-resistant casing that emits little smoke. Article 645 of the National Electric Code (NEC), titled Information Technology Equipment, discusses the use of power cables under a raised floor.

What are isolated Ground units?

Solid state electronic equipment contain microprocessors that are adversely affected by Electromagnetic Interference (EMI). In Geist’s Isolated Ground units, the receptacle ground conductor is permitted to pass through panel boards, junction boxes, etc. without being bonded to the equipment grounding conductor. This isolation minimizes EMI potential within the installation. An external chassis grounding wire is electrically isolated from the receptacle grounding wire. It must be connected to a reliable earth connection to minimize the potential for electrical shock. Isolated Ground PDU’s are especially beneficial in audio/video applications. More information on NEC’s codes for isolated ground systems can be found in the NEC Section 250-146(d). Standard Geist Isolated Ground units can be found on pages 11 and 24. Contact Customer Service with your custom requirements.

What is the FCC?

The FCC, or Federal Communications Commission, is a United States Government Agency charged with regulating interstate and international communications by radio, television, wire, satellite, and cable. FCC rules prohibit electronic equipment used in the United States from emitting any Electromagnetic Interference (EMI) that endangers the functioning of a radio navigation service or other safety services or seriously degrades, obstructs, or repeatedly interrupts a radio communications service. The FCC has established maximum emission levels for unintentional radiators based on whether they are intended for commercial or household use. Products intended for household use are required to meet Class B limits, while products intended for commercial use are required to meet Class A limits. Representative samples of Geist products are tested by an FCC Registered Lab to the Class A limits. All Geist products are compliant with FCC regulations.

What is UL®?

UL® stands for Underwiters Laboratories, Inc. It is an independent agency approved by NFPA (National Fire Protection Association) to determine the life safety of equipment used in the workplace.

What does “UL® Listed” mean?

The term is used by UL® when it determines that a complete product, such as a power distribution unit (PDU), is safe for use as intended by the manufacturer. Only UL® can authorize the use of the UL® Listing Mark.

What does the “cULus®” mark represent?

This mark is placed on products that have been tested and evaluated by UL® to both Canadian and US safety requirements.

What does the CE mark represent?

The CE Mark is a required conformance mark that must be placed on certain types of electrical and electronic equipment sold in the European Union. The CE mark is used to indicate that a manufacturer certifies that a product conforms to all applicable European safety and Electromagnetic Compatibility (EMC) directives.

What is the NEC?

NEC stands for National Electric Code and is sponsored by the NFPA. These guidelines, also known as NFPA70, are used to safeguard life and property from hazards arising from electricity. The NEC is not a US Law, however conformance to it is commonly mandated by State or local law. UL is an independent agency approved by the NFPA to ensure product compliance with the NEC. Additional information is available at

What is RoHS Compliance, and how does it affect me?

RoHS (pronounced “rows” or “row-hoss”) is an acronym for Restriction on the use of Certain Hazardous Substances. The term RoHS is most commonly used to refer to the European Union’s (EU) RoHS Directive. The objective of the EU RoHS directive is to restrict the use of hazardous substances in electrical and electronic equipment. This reduction is intended to both reduce the amount of hazardous substances in landfills resulting from the disposal of electrical and electronic equipment and to minimize the health and environmental impact of recycling electrical and electronic equipment. RoHS Compliance is mandatory for PDU products sold in Europe, and is becoming increasingly more important for PDU products sold in the United States. For example, California has already passed Proposition 65, a RoHS-like law requiring certain electrical and electronic equipment to comply with the requirements established by the EU RoHS Directive.

How do I decipher the Geist product label?

1. The model or type designation 2. The rated voltage or voltage range 3. The rated frequency or frequency range 4. The rated current or current range 5. The manufacturer’s name or registered trademark or unique number assigned by testing agency 6. The approval mark of the safety agency that tested the product 7. UL file # - more information available at htp:// 8. Safety agencies require documentation of the month and year a product is manufactured. Serial numbers are used by most manufacturers to accomplish this. The serial numbers utilized on a daily, weekly or monthly basis are recorded. Geist’s serial numbers and barcodes enable detailed tracking.