RESIDUAL CURRENT FOR PERSONNEL PROTECTION
RESIDUAL CURRENT FOR PERSONNEL PROTECTION
(OP)
In the European countries IEC Codes imposes circuit breakers, in the panel-boards, with residual current ( 100 mA) for personnel protection ? For all circuits or only for socket outlets circuits?
Thanks for attention
A. Pinto
Thanks for attention
A. Pinto





RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
For circuits supplying socket outlets the protective device must disconnect the circuit under fault conditions in 0.4 seconds or better
We can install a 30mA RCD on the circuit to provide protection against shock risk but EEBADS is the accepted approach
For sockets feeding equipment outside the equipotential bonding zone we must install a 30mA RCD
However Part 6 of BS7671 IEE wiring Regs does identify certain locations i.e. construction sites & agricultural installations where a more stringent approach is specified because of the increased risk of an electric shock
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
Here we use 5mA GFI for personnel protection. Period. 5mA is generally safe. 5mA protection is required for all outdoor receptacles and near sinks, water, etc, for indoor receptacles.
Anything set to protect over 5mA is considered equipment protection. 30mA breakers are typically used for heat-tracing circuits, for example.
See Thread238-35719 for a discussion of the effects of various levels of current through the human body.
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
Christopher Caserta
ccaserta@us.tuv.com
Ph:904-225-0360
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
I have heard that the SCR temperature controllers in commercial radiant ovens can trip GFI's, though. I think the actual culprit is a filter that they provide in front of the SCR's; that filter is typically grounded to the chassis. The ground current is enough to trip a GFI receptacle.
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
Okay, being a dumb Yank, I have to ask: What is EEBADS?
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
TTFN
RE: RESIDUAL CURRENT FOR PERSONNEL PROTECTION
If the installation incorporates 30mA or 10mA instantaneous RCDs for personnel protection, it is permitted to use a 100mA time-delayed RCD as the incoming device for overall ground fault protection for the installation, thus providing discrimination between the incoming device and the individual circuits.
30mA is the standard for personnel protection, with 10mA recommended for increased risk situations. 100mA is not suitable for personnel protection, whether time-delayed or not.
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