Hi a very quick question i've had in a recent assignment?
can somone explain to me in fairly good detail the following question please?
explain why the product of an r.c.d rated operating current and earth loop impedence should not exceed 25v for this installation?
ok i know this much i think
the installation is 415v agricultural and also a TT system
the origin of supply is 500mA supply to unit is 100mA and distribution is protected by 30mA (im not really sure this is important)
i know the limit is 25v because its agricultural i also have the formula but i dont understand the question and dont really know what there looking for in my answer
can anyone help if the answer is already in this thread somewhere then forgive my but im obviously been quite thick eh?
anyhow thanks for any help you can offer
can somone explain to me in fairly good detail the following question please?
explain why the product of an r.c.d rated operating current and earth loop impedence should not exceed 25v for this installation?
ok i know this much i think
the installation is 415v agricultural and also a TT system
the origin of supply is 500mA supply to unit is 100mA and distribution is protected by 30mA (im not really sure this is important)
i know the limit is 25v because its agricultural i also have the formula but i dont understand the question and dont really know what there looking for in my answer
can anyone help if the answer is already in this thread somewhere then forgive my but im obviously been quite thick eh?
anyhow thanks for any help you can offer