Clinical effects according to current flow
Electric shock has a variable effect according to the amount of current flowing:
- less than 1mA - tingling
- 5 to 30 mA - "let go shock"; at levels greater than this, the victim is unable to let go of a gripped electrical source due to muscular spasm
- 40 to 50 mA - causes respiratory arrest
- greater than 100 mA - causes ventricular fibrillation
- more than 10 A - prolonged apnoea
The maximum current in a domestic supply in the UK is 13 amps.
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