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What's a determining factor of when you "need" to install a disconnect when hooking up equipment. Not so much ac units I understand they need it for ease of servicing by hvac guys. But more along the lines of saws, compressors, presses and things like that.

Sometimes I install a disconnects following orders and just don't understand what the point is when the panel is 30 feet away and the breaker is clearly marked.
 

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corn-fused
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how about when something goes wrong and you cant 30' fast enough?:blink:
 

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In general, if it has a motor, a disconnecting means must be within sight.

If it does not have a motor, many times you can install a breaker lock at the panel as the disconnecting means.

As always there are exceptions.
 

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What's a determining factor of when you "need" to install a disconnect when hooking up equipment. Not so much ac units I understand they need it for ease of servicing by hvac guys. But more along the lines of saws, compressors, presses and things like that.

Sometimes I install a disconnects following orders and just don't understand what the point is when the panel is 30 feet away and the breaker is clearly marked.
If the panel is behind you, even at two feet away you are at risk.
 

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I had a brain fart last week and installed a disconnect in a basement for a hvac system.

when I was finishing tying everything in I looked up at the panel and just started shaking my head.
 

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From code of the day>

Hi Charlie,
Where a disconnecting means for a motor is installed in a panelboard, and there is a glass window between the panel and the motor location, is an additional disconnect required at the motor? The motor is visible (through the window) from the disconnecting means in the panel and is about 40 feet away. The motor starter (controller) is installed along side the panel. I’m a bit uncomfortable with this installation but I think it might meet the Code. What is your opinion?
Tim Henry

~CS~
 
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