Tech Support – Arc Flash Power Tools


Q: The fuse brand or model is not listed as an option.  How can I use it?
A: Additional fuse models will be available in future updates.  Selecting a similar fuse in the same class by another manufacturer may provide a suitable substitution however be sure to verify trip/arc time and current limiting characteristics.  You can request a fuse model be added to a future update by contacting us at the support email below.

Q: I try to email the PDF labels but they are never received.
A: The application uses Apple’s Mail program to send the email.  The mail app must be properly configured for outgoing mail.

Q: When entering the conductor sizes with a “ / “ for like 1/0, 2/0, 3/0, and 4/0, i have to go to my notes on iPhone and use copy and paste to create the “/“
A: For 1/0, 2/0, 3/0, and 4/0 conductors you can use the alternative, 0, 00, 000, 0000 and it will convert it to 1/0, 2/0, 3/0, and 4/0.

Q: For panelboards with a main circuit breaker is the arc flash calculation for the line or the load side of the MCB?
A: Where a main circuit breaker or fuse is present on a panelboard, switchboard,  or other equipment the arc flash calculation reflects the load size calculation.  If there is no internal protective barrier covering the main over current device/lugs or where other conditions warrant the main protective device can be removed to determine if the line side arc flash potential increases.  The study engineer should determine which calculation(s) should be used for the report and labeling.

Methodology examples (NFPA 70E Annex D.4):

Contact if you face any other technical issues or have questions.

© 2019 Octagon Seven LLC, Patterson, NY

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