disconnects

[wireman1]

do disconnects that are not fused need arc flash warnings does that depend on the voltage and amps

 

[dkidd]

It depends on whether the AJU considers they

"are likely to require examination, adjustment, servicing, or maintenance
while energized"

 

[Hv&Lv]

Depends.. will it be “examined, adjusted, serviced, or maintained while energized,”

Edit: beat me to it...

 

[mwm1752]

Why would you likely to require to have a non fused disconnect energized for examination, adjustment, servicing, or maintenance ? It is either on with power passing thru or the OCPD serving it is off -

 

[dkidd]

Testing voltage to an HVAC unit. You could accidently short it.

 

[mwm1752]

Testing voltage to an HVAC unit. You could accidently short it.

if the switch is closed then voltage if it exists would go to HVAC - you could test for voltage at the HVAC as well - If the HVAC does not have voltage then if you open the disconnect is would not have voltage as well. Would you need clearances for a wall switch? it can be considered a non fused disconnect in certain uses. Likely is the term used

 

[tom baker]

There is still power in the switch in the off condition. PPE is required to verify the absence of voltage.

 

[mwm1752]

There is still power in the switch in the off condition. PPE is required to verify the absence of voltage.

but not clearances - turn off / lock off the breaker- no need to check

 

[Meltric_South]

but not clearances - turn off / lock off the breaker- no need to check

Still need to verify absence of voltage somewhere if you are doing electrical work.