Badwxo59
Member
- Location
- Metairie, Louisiana
- Occupation
- Construction Mgr
Regarding application of condition 2 working clearances allowed by 2020 NEC 110.26 (A) (1) (c) for Existing Buildings.
A new 3ph 480v mcc is proposed to be installed across (face to face), from an existing 3ph 480v mcc inside of an existing industrial motor control center building.
This location would result in more than 42" clearance between the Mcc's but less than 48" which would normally be required by Table 110.26 (A) (1) condition 3.
The written procedures in this facility clearly only allow qualified electricians to service this equipment.
So, while It is clear that reduction of working space to condition 2 is allowed when replacing an existing piece of equipment, (such as an 480v mcc) can this also be interpreted to allow the installation of new equipment (not replacing existing) as described within an existing building?
A new 3ph 480v mcc is proposed to be installed across (face to face), from an existing 3ph 480v mcc inside of an existing industrial motor control center building.
This location would result in more than 42" clearance between the Mcc's but less than 48" which would normally be required by Table 110.26 (A) (1) condition 3.
The written procedures in this facility clearly only allow qualified electricians to service this equipment.
So, while It is clear that reduction of working space to condition 2 is allowed when replacing an existing piece of equipment, (such as an 480v mcc) can this also be interpreted to allow the installation of new equipment (not replacing existing) as described within an existing building?
