CSA C22.2 NO.4-2016 Enclosed and dead-front switches.
5.36 PLUG FUSE — fuse consisting of a current-responsive element inside a housing with coaxial terminals on one end, one terminal being a threaded metal ring or shell on the outside of the housing.
5.37 POLE OF A SWITCHING DEVICE — the portion of a switching device associated exclusively with
one electrically separated conducting path of its main circuit and excluding those portions which provide
a means for mounting and operating all poles together.
5.38 PRESSURE WIRE CONNECTOR — a reusable connector into which the conductor (wire) is secured by mechanical pressure applied by integral screw, cone, or other mechanical parts.
5.39 RATING — a designated limit of operating characteristics based on specified conditions of current, voltage, frequency, and such.
5.40 SERVICE EQUIPMENT — the necessary equipment, usually consisting of a circuit breaker or switch and fuses, and their accessories, located near the point of entrance of supply conductors to a building or other structure, or an otherwise defined area, and intended to constitute the main control and means of cutoff of the supply.
5.41 SHORT-CIRCUIT CURRENT RATING — the maximum available rms symmetrical ac current or maximum available dc current (which is marked on the switch) to which the (fused or unf used) switch is intended to be connected when protected by the specified overcurrent protective device or devices.
5.42 SINGLE-THROW SWITCH — a switch which has an open and a closed circuit position only.
5.43 SWITCH — a device, manually operated. unless otherwise designated, for opening and closing or for changing the connection of a circuit.
5.44 SWITCHING DEVICE — called “singIe-pole’ if it has only one pole. If it has more than one pole, it is called “multipoIe (two-pole, three-pole, and so on) provided the poles are coupled in such a manner as to operate together.
5.45 TYPE TESTS — tests made to determine the adequacy of the design of a particular type. style. or model of equipment or its component parts to meet its assigned ratings and to operate satisfactorily under usual service conditions. Type tests should be made only on representative equipment to substantiate the ratings assigned to all other apparatus of basically the same design. These tests are not intended to be used as a part of normal production. The applicable portion of these type tests may also be used to evaluate modifications of a previous design and to assure that performance has not been adversely affected. Test data from previous similar designs may be used for current designs, where appropriate.CSA C22.2 NO.4 pdf download.