Manlift Car

Powering the Construction Hoist

Today’s task was to provide power to the hoist. The temporary construction elevator anchored to the side of a building. This hoist had a 5.5kw motor and required 30A and a 3-phase 208VAC.

Hoist Motor
Hoist Motor

This straightforward install started with the installation of an Eaton 3-pole 50A breaker in an existing panel. Luckily, there were spaces available. I then ran about 100’ of  6/4 SOOW baloney cord from the panel to the disconnect location. This cable has conductors colored black, red, white and green. I phased the white blue since the manlift required 3 phases, no neutral needed.

Eaton 50A 3-pole
Eaton 50A 3-pole

The disconnect I installed was rated at 250VAC and 50A. This fusible disconnect was anchored to a concrete wall right next to the manlift control box.

Disconnect and Control box
Disconnect and Control box
Hoist control box
Hoist control box

At first I installed 30A time-delay fuses. These required adapters to properly fit in the disconnect. The contractor installing the manlift told me that 30A wasn’t enough, this manlift he said required 50A. I took his word and figured he knew more about this hoist than I did so I swapped out the 30A for 50A.

30A fuses with adapters
30A fuses with adapters
50A fuses
50A fuses

That was it, not too exciting but thought I’d share with you guys anyways.

Hoist being built
Hoist being built

Buddy

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