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Tools Starters PDF

This document provides a chart showing the recommended NEMA starter sizes for electric motors of various horsepower ratings and voltages. The starter size increases with higher motor horsepower or voltage. A note indicates the chart has been revised to require a Size 2 starter for 7.5 HP motors at 208VAC instead of Size 1, due to startup requirements for these motors in press applications.

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rinthus
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186 views1 page

Tools Starters PDF

This document provides a chart showing the recommended NEMA starter sizes for electric motors of various horsepower ratings and voltages. The starter size increases with higher motor horsepower or voltage. A note indicates the chart has been revised to require a Size 2 starter for 7.5 HP motors at 208VAC instead of Size 1, due to startup requirements for these motors in press applications.

Uploaded by

rinthus
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Nema Starter Sizes based on Motor Horsepower and Voltage

HP/VAC 208 Volt 230 Volt 460 Volt 575 Volt


2 Size 1 Size 1 Size 1 Size 1
3 Size 1 Size 1 Size 1 Size 1
5 Size 1 Size 1 Size 1 Size 1
7.5 Size 2 Size 1 Size 1 Size 1
10 Size 2 Size 2 Size 1 Size 1
15 Size 3 Size 2 Size 2 Size 2
20 Size 3 Size 3 Size 2 Size 2
25 Size 3 Size 3 Size 2 Size 2
30 Size 4 Size 3 Size 3 Size 3
40 Size 4 Size 4 Size 3 Size 3
50 Size 5 Size 4 Size 3 Size 3
60 Size 5 Size 5 Size 4 Size 4
75 Size 5 Size 5 Size 4 Size 4
100 Size 5 Size 4 Size 4
125 Size 5 Size 5
150 Size 5 Size 5

Note: this chart has been revised to require a Size 2 starter for 7.5 HP @208VAC. Press controls
built for 7.5HP main flywheel motors @208VAC will typically have a 60 Amp MC Switch.
This is a departure from the NEMA tables, but is typically needed due to the startup requirements
for these motors in press applications.

REVISED May 30, 2000

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