Pickup of Edison Base Fuses

[mbrooke]

You know those Edison base fuses found in old homes? At what level do they first start to melt? I've seen 15 amp fuses take 20amps indefinitely.

 

[tom baker]

Check for a penny behond the fuse.

 

[Hv&Lv]

Possibly, depending on your definition of indefinitely and missing the loads hovering around 10-15 amps with spikes of 20 amps for three or four minutes, which is about as long as someone wants to stare at an ammeter.

http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/product-datasheets-a/Bus_Ele_DS_1039_TC.pdf

 

[mbrooke]

Possibly, depending on your definition of indefinitely and missing the loads hovering around 10-15 amps with spikes of 20 amps for three or four minutes, which is about as long as someone wants to stare at an ammeter.

http://www.cooperindustries.com/content/dam/public/bussmann/Electrical/Resources/product-datasheets-a/Bus_Ele_DS_1039_TC.pdf

So that means a 15 amp fuse starts exceeding 20amps? Or is that just for Canadian fuses?

 

[mbrooke]

Check for a penny behond the fuse.

We call that an NTR (nuisance trip resistant) fuse