Could this number to used to select a suitable circuit breaker and so the 
interrupting voltage is an important parameter?

 

The nameplate rating on the machine should be the information an electrician 
needs during installation and selection of wire size and type.

 

Ralph

 

From: Brian Kunde <[email protected]> 
Sent: Tuesday, May 14, 2024 11:29 AM
To: [email protected]
Subject: [PSES] SCCR Rating Question

 

Greetings to all.  

 

I am new to SCCR ratings on industrial machinery.  The ratings I have seen 
sometimes has a "Maximum Voltage" included, such as;

 

SCCR: 22kA, 600V Maximum

 

Where does the voltage value come from?  In one case, the machine had a line 
voltage rating of "120/208 Vac", but the SCCR rating had a voltage rating of 
"Max 600V".

 

Can this be confusing? Might something think the machine can operate at 600Vac?

 

Thanks for any replies.

The Other Brian

 

 

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