UL 1030:2017 pdf download.Sheathed Heating Elements.
1.1 These requirements cover metal-sheathed heating elements intended for use in appliances andequipment that comply with the requirements for such appliances and equipment.
1.2 These requirements cover sheathed heating elements rated 600 volts or less.
1.3 These requirements do not cover heating elements for use in equipment for use in hazardouslocations as defined in the National Electrical Code,NFPA 70.
1.4 Wherever the terms heating element and element are used in these requirements, they are intendedto mean a sheathed heating element as defined in 2.4.
2 Glossary
2.1 For the purpose of this standard the following definitions apply.
2.2 DIELECTRIC VOLTAGE WITHSTAND - The ability of a heating element to withstand specifiedvoltages applied between current-carrying parts and dead metal parts for specified times without flashoveror puncture.
2.3 LEAKAGE CURRENT - A current,including a capacitively coupled current,that may be conveyedbetween exposed conductive surfaces of a heating element and ground.
2.4 SHEATHED HEATING ELEMENT - A resistance element that is usually encased in magnesiumoxide or encased in a similar insulating material that is, in turn, surrounded by a metal sheath.
2.5 SHEATH WATTAGE DENSITY -The watts per unit area of actively heated sheath surface area. Theactively heated sheath surface area is considered to be the area of the exposed surface of that portion ofthe sheathed heating element between the terminal pins.See Figure 2.1.
