megloff11x
Senior Member
We're making some equipment that will be 480 & lots of current. The actual arc flash hazard depends mostly on the available bolted current at the facility - which we have no control over and getting numbers is as pulling teeth in some locales.
What's the best way to label the machinery?
1. Generic arc flash warning but no PPE or distance info given.
2. Arc flash sticker with blanks for the customer to fill in with above info.
3. Above with values for infinite current calculation, and let the customer replace this with his own sticker showing values for his facility.
If you do a worst case infinite bus calculation, you may require spacesuits where none are needed.
The onus may be on those installing & owning the equipment to fill in the blanks, but I'd like to be sure that there is something for a warning label to start with in case they forget.
A second question, does someone publish a checklist of sorts telling you what warning stickers are needed where and what they should look like? When I did CE compliance, there were some fairly clear & well documented guidelines. Previous places mandated enough stickers to make the machines resemble a Nascar driver's suit & car - to the point where you were overwhelmed and distracted.
Matt
What's the best way to label the machinery?
1. Generic arc flash warning but no PPE or distance info given.
2. Arc flash sticker with blanks for the customer to fill in with above info.
3. Above with values for infinite current calculation, and let the customer replace this with his own sticker showing values for his facility.
If you do a worst case infinite bus calculation, you may require spacesuits where none are needed.
The onus may be on those installing & owning the equipment to fill in the blanks, but I'd like to be sure that there is something for a warning label to start with in case they forget.
A second question, does someone publish a checklist of sorts telling you what warning stickers are needed where and what they should look like? When I did CE compliance, there were some fairly clear & well documented guidelines. Previous places mandated enough stickers to make the machines resemble a Nascar driver's suit & car - to the point where you were overwhelmed and distracted.
Matt
