Hi All
New member on this forum 1st post
i need some good sound advice please I am a maintenance electrician and I have been asked to quote for a 3 phase and neutral electrical supply at 125amps per phase for a chiller unit that is to be hired ,to be totally honest I am out of my depth . My supervisor is non technical , I told him to get a company that specialises in this type of installation and to be fair on him that’s what he wants to do but he needs to justify using a sub-contractor
The advice I need is when designing the installation what other factors should I consider
I know the length of run and routing are the obvious ones my cable of choice would be swa xple rated at 90oC the cable run I have been told is between 50 and 70 mtrs
In my opinion the other points are
starting currents
I have yet to receive information on the chiller yet but can I assume because of the current load it will be star delta start
electrical noise I imagine it will have filters fitted
4 core cable with separate cpc or 5 core with the cpc the same size as the phase conductor
I am not sure at what size of swa that the armour cannot be used as a cpc
PFC to be taken into consideration
my user name is Dimspark if a forum member reads the above they will probably think my user name is apt
Thanks to all Dimspark
New member on this forum 1st post
i need some good sound advice please I am a maintenance electrician and I have been asked to quote for a 3 phase and neutral electrical supply at 125amps per phase for a chiller unit that is to be hired ,to be totally honest I am out of my depth . My supervisor is non technical , I told him to get a company that specialises in this type of installation and to be fair on him that’s what he wants to do but he needs to justify using a sub-contractor
The advice I need is when designing the installation what other factors should I consider
I know the length of run and routing are the obvious ones my cable of choice would be swa xple rated at 90oC the cable run I have been told is between 50 and 70 mtrs
In my opinion the other points are
starting currents
I have yet to receive information on the chiller yet but can I assume because of the current load it will be star delta start
electrical noise I imagine it will have filters fitted
4 core cable with separate cpc or 5 core with the cpc the same size as the phase conductor
I am not sure at what size of swa that the armour cannot be used as a cpc
PFC to be taken into consideration
my user name is Dimspark if a forum member reads the above they will probably think my user name is apt
Thanks to all Dimspark