kloc5
Member
- Location
- United States
- Occupation
- Controls Manager
Hello,
I am working on a control panel for a piece of equipment that will have a hydraulic lift table (https://www.mcmaster.com/8758T37/). As I understand it, this lift table is just a motor driving a hydraulic pump to go up and a valve that opens to go down with a pendant with up / down buttons (which we will replace with automatic control). It is 120V, single phase. On their website, it lists the motor full load current as 15A. However, I reached out to McMaster and got the motor info, which is a single phase 115V 1/2 HP motor.
I initially started calculating the branch circuit breaker and branch wires for the single-phase 115V 1/2HP motor using Table 430.248. My question is, when calculating the branch breakers and wire size and then the feeder fuses and wire size, should I treat this lift as a single phase 1/2 HP motor (and use its FLC) or treat it like a 15A "black box" as McMaster lists the current?
The lift also does not have overload protection, so I was going to add one according to the motor's nameplate FLA. However, this doesn't make sense if treating it as a 15A "black box".
Any help would be greatly appreciated.
Thanks!
I am working on a control panel for a piece of equipment that will have a hydraulic lift table (https://www.mcmaster.com/8758T37/). As I understand it, this lift table is just a motor driving a hydraulic pump to go up and a valve that opens to go down with a pendant with up / down buttons (which we will replace with automatic control). It is 120V, single phase. On their website, it lists the motor full load current as 15A. However, I reached out to McMaster and got the motor info, which is a single phase 115V 1/2 HP motor.
I initially started calculating the branch circuit breaker and branch wires for the single-phase 115V 1/2HP motor using Table 430.248. My question is, when calculating the branch breakers and wire size and then the feeder fuses and wire size, should I treat this lift as a single phase 1/2 HP motor (and use its FLC) or treat it like a 15A "black box" as McMaster lists the current?
The lift also does not have overload protection, so I was going to add one according to the motor's nameplate FLA. However, this doesn't make sense if treating it as a 15A "black box".
Any help would be greatly appreciated.
Thanks!