Industrial control panel wiring standards are experiencing significant changes in 2018.
Electrical panel building regulations.
Electrical equipment must have a minimum 30 wide clear working space laterally in front of.
The national electric code nec includes the minimum standards for installing a circuit breaker panel box.
Three of these standards concern the box location clearance and space around the box and box height.
You might find bs en60204 1 useful safety of machinery electrical equipment of machines part 1.
This allows utility companies and local building code authorities to make exceptions in special circumstances and to amend the nec as necessary for local use.
But when you run new electrical cable for new service whether wiring several circuits or adding just one receptacle be sure to work with a building inspector and comply with all local codes.
Nec 110 26 requires electrical equipment including electrical panels to be located to provide required working clearances about the equipment.
Control systems panels equipmen are often considered as part of machinery as a definition and are within the scope of both en60204 1 and also i believe the supply.
Enclosure systems wöhner.
Among equipment experiencing shifting standards is the ul508a now ul 60947 4 nfpa79 and nfpa70.
The national electrical code has a few restrictions on where electrical panels may be located as follows.
Power distribution and control engineering.
Seriously many differnet panel manufactures keep to there own standard of control panel and the field wiring becomes a night mare.
The authority having jurisdiction rules and regulations take precedence over the nec codes.
To ensure that an electrical panel can be accessed at all times during inspection maintenance or emergency osha has determined that the working space in front of the equipment must be at least 30 inches wide or the width of the equipment.
If you re replacing an existing fixture switch or receptacle there s usually no need to contact the building department.
General requirements which could have been used to manufacture the panel.
What i am getting at is that panels come under the wiring regs gas regs fire alrm regs building regs and ever other reg you may not of heard of ie kitchen extract fans linked acroos loads of loverley safety systems.
A clearance of at least 3 feet is required for equipment using 120 to 250 volts.
The range of electrical installation work that is notifiable where there is a requirement to certify compliance with the building regulations has been reduced removing some work carried out in kitchens and outdoors.
Local code inspectors would probably not allow a new installation in that location.