BS EN 60745-2-21 : 2009

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 General requirements
5 General requirements for the tests
6 Environmental requirements
7 Classification
8 Marking and instructions
9 Protection against access to live parts
10 Starting
11 Input and current
12 Heating
13 Leakage current
14 Moisture resistance
15 Electric strength
16 Overload protection of transformers and associated
   circuits
17 Endurance
18 Abnormal operation
19 Mechanical hazards
20 Mechanical strength
21 Construction
22 Internal wiring
23 Components
24 Supply connection and external flexible cords
25 Terminals for external conductors
26 Provision for earthing
27 Screws and connections
28 Creepage distances, clearances and distances through
   insulation
29 Resistance to heat, fire and tracking
30 Resistance to rusting
31 Radiation, toxicity, and similar hazards
Annexes
Annex K (normative) - Battery tools and battery packs
Annex L (normative) - Battery tools and battery packs
        provided with mains connection or non-isolated
        sources
Annex ZZ (informative) - Coverage of Essential Requirements
         of EC Directives
Annex ZZA (informative) - Coverage of Essential Requirements
          of Directive 98/37/EC
Annex ZZB (informative) - Coverage of Essential Requirements
          of Directive 2006/42/EC
Bibliography

Pertains to drain cleaners.