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1930 Eicr

Kelly Marie Angel

Interesting stuff I didn't even know they did EICRs back in the day  guess it proves nothings new. Not sure about AC being more dangerouse than DC  letsface it anything more than 110 volts will be moderately unpleasant to down right painful

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  • Not sure about AC being more dangerouse than DC

    It's the old War of the currents debate. Basically volt for volt it's much harder to push a heart into VF using d.c. than a.c. In the end a.c. won, not through safety considerations but practical reasons - you'd can't transmit electricity for long distances efficiently at low voltages and converting from high voltages to low voltages (in the old days) could only be done using a transformer - and transformers only work with a.c.

    It's still recognised in the current regs - the lower limit for having to provide ADS is 50V for a.c. but 120V for d.c. (see table 41.1).

       - Andy.

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  • Not sure about AC being more dangerouse than DC

    It's the old War of the currents debate. Basically volt for volt it's much harder to push a heart into VF using d.c. than a.c. In the end a.c. won, not through safety considerations but practical reasons - you'd can't transmit electricity for long distances efficiently at low voltages and converting from high voltages to low voltages (in the old days) could only be done using a transformer - and transformers only work with a.c.

    It's still recognised in the current regs - the lower limit for having to provide ADS is 50V for a.c. but 120V for d.c. (see table 41.1).

       - Andy.

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