CSA C22.2-No-109-17:2021 pdf download.Commercial cooking appliances
4.1.3 Components located in an extra low voltage circuit that is not relied upon to reduce the risk of electric shock, fire, or injury shall not require additional investigation. Compliance with all the requirements of this Standard shall not be affected if such components are rendered inoperative.
4.1.4 The input to cord-connected appliances for use on nominal 120 V branch circuits protected by overcurrent devices rated or set at not more than 15 A shall not exceed 1500 W at 120 V. (Refer to Clause 6.2 for the rating test.)
4.1.5 Closed-in cooking areas that are not vented externally to the appliance to prevent undue accumulation of moisture, grease, etc., shall be subject to investigation for suitability in the end-use application.
4.1.6 Piping or pressure vessels, integral with appliances which may operate at more than atmospheric pressure shall meet the requirements of CSA B51.
Note: Where the pressure is less than 103 kPa absolute, piping or pressure vessels may be subject to additional evaluation.
4.2.1 General
Appliances shall have enclosures of non-combustible, absorption-resistant material, which shall enclose all live parts except power supply cords.
4.2.2 Construction
Enclosures of appliances shall be so formed and assembled that they will
a) have the strength and rigidity necessary to resist the abuses to which they may be subjected,without increasing the fire or accident hazard due to deformation of the enclosure with resulting reduction of spacings, loosening or displacement of parts, etc.;
b) except in the case of recessed open-wire heating elements, afford protection against accidental contact with live parts; and
c) afford protection for electrical components against the deleterious effects of moisture, steam,grease or other injurious material that may be encountered in normal operation.
4.2.4.4 Display-type enclosures (e.g., popcorn machine domes) of polymeric material shall
a) be of a material that complies with the flammability requirements for HB material in CAN/CSA C22.2 No. 0.17;
b) not be the sole enclosure for wiring and current-carrying parts other than lamps, lampholder contacts, electric discharge lamp starters, and starter-holder contacts;
c) not be in contact with any electric discharge lamps;
d) not be spaced less than 50.8 mm from any lampholder, electrode receptacle, live metal,incandescent lamp or any part likely to be a source of heat or arcing, except that this spacing may be less than 50.8 mm but not less than 12.7 mm where fluorescent lamps only are used; and
Note: Barriers of absorption-resistant, non-combustible material may be used as an alternative to these spacings provided they are permanently secured.
e) be of a material that complies with Clause 4.2.4.1 Items a) and b).
4.2.5 Enclosure with integral heater element
Enclosure sections consisting of heater elements such as griddles shall be permanently secured in place,except that if the heater element forms a small part of the total top area (e.g., solid-cast disc element set into the cooking top) the means of fastening may be that which prevents lateral movement and turning only.CSA C22-2-No-109-17 pdf download.