Touch voltage

[peteelecs]

Please could someone explain Touch Voltage to me and do I have to check for it when installing socket outlets and how I go about testing for it

 

[peteelecs]

How do I check for touch voltage and does it matter the voltage I get

 

[SirKit Breaker]

The safe touch voltage is deemed to be 50 volts. I disagree i have been cracked by much less. In my humble opinion and that of the people who trained me many moons ago, all voltages should be treat as lethal, i have yet to find a reason to disagree with that statement after more than 30 years.

Cheers............Howard

 

[JUD]

The regs state that touch voltage should not rise above 50V.

You can check by taking a continuity reading between exposed-conductive-parts and extraneous-conductive-parts.

The reading you get multiplied by the current causing the protective device of the circuit to operate in the required time must be ≤ 50V (V = I x R).

For RCD protected circuits this would be 1667Ω (0.03 x 1667 = 50V)

 

[Farmelectrics]

jud had a few pints of the black stuff maybe not reading question right were does 0.03 come from cheers

 

[RogertheBodger]

jud had a few pints of the black stuff maybe not reading question right were does 0.03 come from cheers

RCD rated at 0.030mA

 

[MarkieSparkie]

0.03A (30mA) the nominal rating of the RCD.

 

[MarkieSparkie]

RCD rated at 0.030mA

DOH! Typo, A NOT mA, 1/1000 times to small.:90:

 

[RogertheBodger]

0.03A (30mA) the nominal rating of the RCD.

Always get caught with that one.

 

[jeremy]

0.03A perhaps? (just to avoid confusion)

 

[RogertheBodger]

DOH! Typo, A NOT mA, 1/1000 times to small.:90:

Shall we settle for 30 milliamps?

 

[jeremy]

Note to self: must learn to type faster!

 

[Farmelectrics]

cheers lads did no just needed reminding just gettin another can of the black stuff

 

[JUD]

Sorry.

30mA x 1667 = 50V :tounge_smile:

 

[Farmelectrics]

never tested any other than 30ma ones myself but thanks for the advise on the `100ma ones glennspark ber that in mind