Non Fused Disconnect Clearance

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Non fused disconnect clearance. 110 26 of the national electrical code nec. You re not if you fail to comply with the following three clearance requirements in sec. There are fused and non fused non fusible. Does this requirement extend to non.

The 60 amp 240 volt non fuse metallic ac disconnect the 60 amp 240 volt non fuse metallic ac disconnect is designed to stop the power going to an air conditioning unit to allow for safe working conditions. Eaton 30 amp 2 pole fusible general duty enclosed molded case switch disconnect. There are two types of disconnect switches commonly used in commercial businesses. Siemens 60 amp 2 pole non fusible safety switch disconnect.

The disconnect is a non fuse puller type and is ul listed with an enclosed pull out switch. A non fused disconnect generally has a short circuit withstand of 5000a and a fused disconnect very often has the withstand rating of the fuse that is inserted and approved by the manufacturer resulting in almost always 200k. Nec 110 26 requires working clearance in front of equipment likely to require calibration testing or adjustment while energized. Are you protecting yourself from electric shock and burns.

A fused disconnect will also help with certain downstream withstand ratings such as for some transfer switches etc. This means a 30 by 36 inch space or larger in front of panels access panels on hvac equipment and fused disconnects. And 3 minimum headroom.