OK, I'd like to know how, assuming its "code legal" to wire a two-slot load center for 120 volt incoming service. What are my alternatives if this is not possible?
Background:
I'm running a 120 volt branch circuit from main panel in house out to "pump house." Distance is just under 100 feet. I'll be using 10 gauge Romex for in house run and individual THHN in conduit for underground run to feed the pump house. I'm using 10 gauge wire to minimize voltage drop and I'm using 120v not 240v because I'm conserving remaining slots in main panel. I'll be running a 3/4hp automatically started pump with integral thermal protection with full load amps of 14.8 per name plate and full load amps of 13.8 per NEC table. The breaker in the house main panel will be 30 amps for this branch circuit (although 20 amps would probably be OK; per NEC I ca not go beyond 35 amps, 250% of FLA for this circuit).
At the pump house, I'd like to connect to pump and to a single 20 amp outlet box for occasional use. The electrical inspector told me that I should consider installing a load center in pump house fed by the 30 amp 10 gauge branch circuit (he knew that I was going to run a 120 volt line) so I purchased such a box at my local Home Depot. The box is labeled 120/240 v maximum. The box is designed so that each lug feeds one half of the two slots so as is the box is really designed to accept 240v incoming service not the 120 volt I'll be using. To make the box work for my application I'll have to bridge the two lugs in some manner but I see no accommodation for this in the box as designed. So what do I do? Should I install a junction box upstream of the load center and wire nut two hot leads into the single hot lead coming from the house and use each of these two hot leads as incoming service for each of the two lugs, respectively? Or did I get the wrong type of box -- is there such a thing as a 120 volt only load center?
Background:
I'm running a 120 volt branch circuit from main panel in house out to "pump house." Distance is just under 100 feet. I'll be using 10 gauge Romex for in house run and individual THHN in conduit for underground run to feed the pump house. I'm using 10 gauge wire to minimize voltage drop and I'm using 120v not 240v because I'm conserving remaining slots in main panel. I'll be running a 3/4hp automatically started pump with integral thermal protection with full load amps of 14.8 per name plate and full load amps of 13.8 per NEC table. The breaker in the house main panel will be 30 amps for this branch circuit (although 20 amps would probably be OK; per NEC I ca not go beyond 35 amps, 250% of FLA for this circuit).
At the pump house, I'd like to connect to pump and to a single 20 amp outlet box for occasional use. The electrical inspector told me that I should consider installing a load center in pump house fed by the 30 amp 10 gauge branch circuit (he knew that I was going to run a 120 volt line) so I purchased such a box at my local Home Depot. The box is labeled 120/240 v maximum. The box is designed so that each lug feeds one half of the two slots so as is the box is really designed to accept 240v incoming service not the 120 volt I'll be using. To make the box work for my application I'll have to bridge the two lugs in some manner but I see no accommodation for this in the box as designed. So what do I do? Should I install a junction box upstream of the load center and wire nut two hot leads into the single hot lead coming from the house and use each of these two hot leads as incoming service for each of the two lugs, respectively? Or did I get the wrong type of box -- is there such a thing as a 120 volt only load center?
