This has started to go around in circles so perhaps a broader view will help Coby.
In an ideal world an electrical installation would comprise RCDs and bonding to various services. You would have protection as far as you can reasonably achieve. However this position has taken many years to evolve.
So I put to you a tragic case, many years ago where a young child was electrocuted at Christmas. Playing with her friend, both 10 years old, like kids do in bare feet. The Christmas tree lights were fed by a two core single insulated flex, as they were in those days. The earth bonding was perfect, water and gas, the heating by radiators. So the integrity of the equipotential zone was intact, PME. However, there was no RCD protection for the socket feeding the flex and the cable, being pulled in and out of the loft for years had become frayed.
The young child stood on the live bare flex and held the earthed steel radiator.
So, the ideal scenario is RCDs in sensible situations and earth bonding which is a legal requirement when using a DNO PME terminal.
A couple of caveats, G Kenyon mentioned the stone floor and the baby. While not always practical UK Power networks asks for a steel grid in the ground floor of bathrooms/wet rooms etc which in turn connect to the earth terminal and create a local zone. Failiang that, an RCD is reqd.
His other comment, regarding the radiators, bonding will cover the pipework in this instance as there are no other services and an insulated floor. BTW, rads themselves are considered extraneous.
This has started to go around in circles so perhaps a broader view will help Coby.
In an ideal world an electrical installation would comprise RCDs and bonding to various services. You would have protection as far as you can reasonably achieve. However this position has taken many years to evolve.
So I put to you a tragic case, many years ago where a young child was electrocuted at Christmas. Playing with her friend, both 10 years old, like kids do in bare feet. The Christmas tree lights were fed by a two core single insulated flex, as they were in those days. The earth bonding was perfect, water and gas, the heating by radiators. So the integrity of the equipotential zone was intact, PME. However, there was no RCD protection for the socket feeding the flex and the cable, being pulled in and out of the loft for years had become frayed.
The young child stood on the live bare flex and held the earthed steel radiator.
So, the ideal scenario is RCDs in sensible situations and earth bonding which is a legal requirement when using a DNO PME terminal.
A couple of caveats, G Kenyon mentioned the stone floor and the baby. While not always practical UK Power networks asks for a steel grid in the ground floor of bathrooms/wet rooms etc which in turn connect to the earth terminal and create a local zone. Failiang that, an RCD is reqd.
His other comment, regarding the radiators, bonding will cover the pipework in this instance as there are no other services and an insulated floor. BTW, rads themselves are considered extraneous.
