Sizing for Duty/Standby pumps
Sizing for Duty/Standby pumps
(OP)
Hi,
i need some input on this please;
i have a duty/standby pump configuration.(one of them running at a particular time).
right now the wiring of the to the pump includes a single point power with a main disconnect with 2 secondary disconnects for each pump. the main disconnect/wire are sized on the assumption that both pumps are running.
will it be possible to size down the main disconnect and wiring to as if only one pump is running as it is an duty/standby configuration?
i need some input on this please;
i have a duty/standby pump configuration.(one of them running at a particular time).
right now the wiring of the to the pump includes a single point power with a main disconnect with 2 secondary disconnects for each pump. the main disconnect/wire are sized on the assumption that both pumps are running.
will it be possible to size down the main disconnect and wiring to as if only one pump is running as it is an duty/standby configuration?





RE: Sizing for Duty/Standby pumps
RE: Sizing for Duty/Standby pumps
RE: Sizing for Duty/Standby pumps
Dan - Owner
http://www.Hi-TecDesigns.com
RE: Sizing for Duty/Standby pumps
RE: Sizing for Duty/Standby pumps
Is there any possibility this will operate as a duty-assist mode rather than duty-standby, i.e. if the duty pump can handle the flow then the second pump stands idle, but if the duty pump can't cope alone the assist pump also cuts in?
How big is the cost difference between cable sized for one pump and cable sized for both? Are you the client, or the contractor? Is the small cable already installed, or is this question still on paper?