Which statement correctly compares ITT continuous operation max and ITT start max?

Which statement correctly compares ITT continuous operation max and ITT start max?

• A. ITT continuous operation max is higher
• B. ITT start max is higher
• C. They are equal
• D. Cannot be compared

Answer: (B)

At startup, many electrical devices experience a surge in current or stress because components are cold, capacitors are uncharged, or mechanical loads (like motors) need extra torque to begin moving. This transient lets the device overcome initial barriers, but it can’t be sustained for long without overheating or shortening component life. To protect the device, the continuous operation maximum is defined as the limit you can stay at without damage over an extended period, and it’s set lower than any brief startup peak. So the ITT start max is higher than the ITT continuous operation max, reflecting the allowable short-term inrush versus the safer long-term rating.

At startup, many electrical devices experience a surge in current or stress because components are cold, capacitors are uncharged, or mechanical loads (like motors) need extra torque to begin moving. This transient lets the device overcome initial barriers, but it can’t be sustained for long without overheating or shortening component life. To protect the device, the continuous operation maximum is defined as the limit you can stay at without damage over an extended period, and it’s set lower than any brief startup peak. So the ITT start max is higher than the ITT continuous operation max, reflecting the allowable short-term inrush versus the safer long-term rating.