Question can you lock and isolator ON?
from 537.2.5 it says an off load isolator can be locked on.
A designer is saying to me you can use an onload device (it s a rail application), but to me it clearly staes it has to be an off load device.
Any thoughts?
I need to add they they are proposing to use an on load isolater and padlock it on.
Here is an example, from the IET Electrician's Guide to Fire Detection and Fire Alarm Systems, 3rd Edition, that clearly shows that, not only is locking isolators in the 'on' position an accepted practice, but more importantly that it is actually required in some cases:
I need to add they they are proposing to use an on load isolater and padlock it on.
Here is an example, from the IET Electrician's Guide to Fire Detection and Fire Alarm Systems, 3rd Edition, that clearly shows that, not only is locking isolators in the 'on' position an accepted practice, but more importantly that it is actually required in some cases:
