Replacing aerial to underground by installing a meter main combo outside with feed through lugs into the garage panel (just behind the block wall). The main service panel inside will now become a subpanel and the grounds and neutrals will have to be separated. The main breaker in the inside panel is a 150A and the Meter main outside will be 200A.
So the inspector says now they enforcing the following : any three wire circuits CANNOT be in a subpanel and will have to be extended into the meter main and OCPD will have to be in the Service equipment not the newly converted subpanel. I asked if we can put the dryer and range on GFCI instead and inspector said no because the grounded conductor is not insulated ? He did say to show him in the code where it can be done and he will pass it along to everyone else (This is a great inspector to work with - always helpful)
Thing is that the Dryer has not ground and has red black and white INSULATED conductors - the circuit is not being modified or extended (unless we have to extend to outdoor meter main). The Range is SE cable and does currently originate from the service equipment (so I see where 250.140(4) might kick in -the uninsulated grounded conductor might touch metal that connected to ground somewhere upstream and create a parallel path?) . But the Dryer should be fine to leave in the main panel correct?
The extension to the meter main / would likely be more than 5' and that IMO would trigger upgrade to GFCI and possibly having to upgrade to 4 wire. The reason we are trying to avoid extending to the meter main is that it's only an 8 space (due to feed through lugs). Generator Interlock breaker, SPD, Dryer and Range will use up all the spaces and we still need space for a future pool panel breaker.
thanks for any insights
So the inspector says now they enforcing the following : any three wire circuits CANNOT be in a subpanel and will have to be extended into the meter main and OCPD will have to be in the Service equipment not the newly converted subpanel. I asked if we can put the dryer and range on GFCI instead and inspector said no because the grounded conductor is not insulated ? He did say to show him in the code where it can be done and he will pass it along to everyone else (This is a great inspector to work with - always helpful)
Thing is that the Dryer has not ground and has red black and white INSULATED conductors - the circuit is not being modified or extended (unless we have to extend to outdoor meter main). The Range is SE cable and does currently originate from the service equipment (so I see where 250.140(4) might kick in -the uninsulated grounded conductor might touch metal that connected to ground somewhere upstream and create a parallel path?) . But the Dryer should be fine to leave in the main panel correct?
The extension to the meter main / would likely be more than 5' and that IMO would trigger upgrade to GFCI and possibly having to upgrade to 4 wire. The reason we are trying to avoid extending to the meter main is that it's only an 8 space (due to feed through lugs). Generator Interlock breaker, SPD, Dryer and Range will use up all the spaces and we still need space for a future pool panel breaker.
thanks for any insights