Fuses and disconnect

Status
Not open for further replies.
R

rich1956

Member
We have a device that has 18 outputs that operate at 95 VDC with a max current of 10 amps to drive fuel solenoids on an engine in a Class I Div 2 Group D location. I need to protect each output circuit and associated wiring. We would like to use a high speed ceramic fuse for each circuit and use the device disconnect switch as a means to shut off power in order to service the fuses. Article 501.105 (B)(5) states each fuse needs a disconnect switch - we would like to use the one device disconnect for all fuses. Does that design approach satisfy the requirements?

Thanks for any and all opinions.

Rich
 
J

john m. caloggero

Senior Member
Re: Fuses and disconnect

Section 501.105(B) of the 2005 NEC does not require a disconnect for fuses. Part IV of Article 240, section 240.40 requires fuses in circuits greater than 150 volts to have a disconnecting means, however, cartridge fuses of any voltage where accessible to other than qualified persons require a disconnecting means.
 
Status
Not open for further replies.
Top